Lapworth Museum Object of the Month

Those close to the Museum showcase selected objects from the collections and discuss their significance!

Hominid Skull

Alayna, a pupil at King Edward High School, tells us about a hominid skull and shows some of her associated artwork.

Transcript

My name is Alayna I go to King Edward High School in Edgbaston and I'm here to talk about my object of the month, this hominid skull.

I chose to take a picture of it and visit this museum, in fact, to focus on my GCSE art theme of growth and decay. I chose this skull, this was I think the second one that I did. And I thought, I did previously my skulls in biro and I thought, I need to do some watercolor. I need to capture the values and the texture of the skull.

I emphasized some of the colouring, especially of the teeth and the sort of upper cheek bones. I emphasized sort of the red and the brown.

I would encourage anyone in the university or outside to come to the Lapworth Museum and visit it and have a look at the preservation and the artifacts.

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Pteranodon

Steve, a regular visitor to the Museum with his family, share his favourite geological object, the flying Pteranodon.

Transcript

Hi, my name's Steve Tippin and my chosen object is this wonderful Pteranodon skeleton behind me that you can see suspended from the roof.

What I like about this exhibit is not only its beautiful form with a graceful wing structure, but also that it is suspended from the ceiling as if it is in flight. And I feel quite motivated to go away and find out what other people think about, Pteranodons or what they've learned about them. So, for example, the very rigid torso which gave this Pteranodon a more efficient respiratory system as some people think, more efficient than modern day bats at least. And the difference in wing structure between the Pteranodon and bats and birds, although these structures have, evolved or been created, independently.

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Fossilised Wood

Harriet, a previous member of staff at the Museum, shares her favourite geological object, a piece of fossilised wood.

Transcript

Hi, I'm Harriet. My object of the month is this 220 million year old piece of fossilised wood that used to be a part of a tree.

The reason I've chosen this as my object of the month is because I did an environmental internship with the museum this summer, which was helping them be more sustainable, environmentally friendly. So, I thought I'd link that to my object of the month because I value trees and I think they're so important to our environment and to loads of ecosystems and that awareness should be brought to protecting them. And it's important to also realize the resilience of trees past and present. We can see like, this looks so beautiful and I think appreciating the beauty then can help us appreciate the beauty now and the importance of trees today. I also thought the object was really beautiful because we can see over time as it's fossilized as being so old, like 220 million years, it's formed these really beautiful crystals from different colors, from the different oxides that are in the ground and in the soil from that time. But yet on the outside it still maintains the texture of like a tree. On the outside,if you didn't see this, you just would have no idea what was on the inside here. And just the beauty of the different crystals, the different formations, alongside the texture of the wood, which I think is something really special.

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The Moine Thrust

Catriona Wright, Volunteer Coordinator at the Museum, shares her favourite object, a geological formation in the northwest Highlands of Scotland.

Transcript

I'm Catriona Wright and I'm a volunteer at the Lapworth Museum. My object is the Moine Thrust, which is a geological formation in the northwest Highlands of Scotland. This played a key part in Lapworth’s life and career.

In the 19th century, the basics of geology were being established and this involved vigorous debates. Relationships within geological circles became very fraught. In 1883, Charles Lapworth was at the centre of one of these disputes, what became known as the Highland controversy. On a field trip to the area, he realized that the official interpretation of the formation was incorrect. Bitter conflict with the Geological Survey followed, and this led to a breakdown in his health, and he had nightmares of the Moine rocks grinding over his head as he lay in bed at night.

The correspondence in the archive with other academics, shows that they were sympathetic and supportive. In this letter, a fellow professor Henry Elaine Nicholson writes, I'm sorry you have been ill, it is overwork. How slow and disheartening a process it is to build up and restore an exhausted nervous system. In terms of remedies. He says to the pipe, smoking Lapworth, let us blow a cloud together and unburden our souls. Tobacco rather than alcohol was the stress reliever of choice, it seems. Lapworth recovers, after six months recuperation and goes on to have a long and very distinguished career.

In 1913, he retires after 31 years in post as Professor of Geology at Birmingham University.

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Charnockite

Angela George, a former Artificial Intelligence in Machine Learning student at the University of Birmingham, shares her chosen Object of the Month, Charnockite.

Transcript

I'm Angela George. I studied artificial intelligence in machine learning at the University of Birmingham. While here, I used to work part-time at the museum, and as you can see, the museum offers a lot of beautiful rocks to look at. And I have selected the most unassuming one as the object of the month. This is called charnockite and it is a metamorphic rock formed due to high pressure and heat, unlike volcanic rocks, which come from eruptions. This is very common in India. And this specific specimen is from Tamil Nadu in India, which is very close to where I'm from, and you can find it in almost all the households. We use it to build the house. It's used in kitchen utensils. We make mortar and pestles out of it. And these rocks remind me of the stories I've heard about my great-grandfather.

He was a farmer and he has built his house on top of a hill, and he used to cultivate around that hill. So where we are from, we get a lot of heavy rainfalls. And when it rains, we get landslides and they're like volcanos, but except for lava. You have water coming out of it, and it washes down these big boulders of charnockite that's present everywhere. And so the story goes that, you know, before my grandfather came and settled down on top of his, off top of the hill two big boulders of charnockite had rolled down off top of the hill two big boulders of charnockite had rolled down and halfway through the hill, like it got stuck and, and formed like a little cave in between. And when my grandfather started cultivating, he would work from sun up to sun down. And in the afternoons when the sun was harsh, he would get into this little cave and take his afternoon nap there. These rocks are found everywhere. So to get to the top of the hill, he had built like about a hundred stairs. Like he would break these rocks down, boulders down to little rocks, and he built like a hundred stairs all by himself, and it's still there. So, we would climb up those stairs and halfway through when we need a break, we would go to this cave and just, you know, reminisce about the fact that our grandfather used, great-grandfather used to take afternoon naps there. Yeah. And that's why I've selected charnockite as the object of the month.

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Allosaurus

Zachary, a regular visitor to the Lapworth Museum, tells us about his favourite object, the Allosaurus.

Transcript

Hi, I'm Zachary, and today I want to talk to you about the Allosaurus in Lapworth Museum.

The Allosaurus is a theropod and it can be recognized as that, by the shape of its skull, its teeth, its long tail, and its two legs. One of the distinct features of Allosaurus is its arms, which are long. In fact, they were long enough that they could dig their young out of their nests. The Allosaurus prayed on a variety of Sauropods, and other Jurassic, herbivorous dinosaurs, like Apatosaurus, Camptosaurus and Stegosaurus. It lived in the Jurassic period just before the Cretaceous.

If you come into the museum and look to the right-hand side of the Allosaurus, you'll find its middle toe has a huge swelling. And if you look up a bit to your right, one of its ribs has swollen from an injury.

Well, I hope you enjoyed this video, and it would inspire you to learn more about the Allosaurus or make your own. Bye.

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Capped Quartz

Emily, an English and History student at the University of Birmingham and a Visitor Services Assistant at the Museum, showcases the capped quartz.

Transcript

I'm Emily and I'm a English and History student and a Visitor Service Assistant here at the Lapworth Museum of Geology.

So, the item that I have picked as my Object of the Month is this capped quartz, which is from the Virtuous Lady Mine near Tavistock in Devon. It's believed that this was sourced around the 19th century and it's actually a very, very rare quartz.

However, the reason that I picked this is not because of its rarity. This is located at the top of the museum in the gorgeous rainbow cabinet of all different minerals. It's one of my favorite places in the museum and I love to just go and sit there and look at them.

When I saw it for the first time, I thought that it looked exactly like a mushroom. I imagined all little woodland creatures and fairies and sprites living among it, protecting themselves from the rain and having their fun little imaginative life underneath this item. However, that's not the only thing that people have said that it reminds them of. Sometimes I've had people say that it looks like a little hat or that the texture of it looks like that of a watch face. And when I see the two pieces together, I think that it looks like a dragon egg, especially when you move it up and down. It looks like this pyramid bit is the joyous egg inside.

So the reason I picked this as my item of the month is because of the way it sparked my imagination and the different things that it made me think of about the world around us.

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Bornite

Pauline Bailey, a visual artist and curator who has worked closely with the Museum, describes the 'Peacock Ore'.

Transcript

Hi, I'm Pauline Bailey, visual artist and curator, and I've been working with the Lapworth for quite a while now on a couple of arts projects with collaboration with other artists and some local schools. And my favourite object of the month is Bornite, and this stuff always takes my breath away. In particular the peacock ore - this is probably absolutely my favourite.

I mean every time you look into a piece of bornite there’s probably every single colour of the rainbow in there, but there’s usually a particular colour that’s more dominant. I can’t give you the scientific reasons for that, because I’m just drawn to these for aesthetic reasons. You know, because I love the colours. I am a bit like a child in a sweet shop really. I just want to, hop, and skip, and jump and sing. I mean every single time I see this stuff, it takes my breath away, absolutely takes my breath away.

There’re so many pieces in the museum that you can be exploring, and I would recommend anyone to come down and just do that journey, get yourself lost in the collection, because some of the pieces are absolutely amazing.

What I'm wearing today is quite by accident. I didn't even really plan to be wearing purples,
but clearly purple is one of my favourite colours. I like the, feel of them, the sort of visceral nature of these crystals. I mean, this is just a tip of the iceberg. This is just a small selection of the collection. And I just absolutely love this stuff. Absolutely love it. But this is my object of the month.

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Liparoceras cheltiense

Mike Hermolle, long-term volunteer at the museum, describes his chosen Object of the Month; a Liparoceras cheltiense ammonite.

Transcript

I'm Mike Hermolle, I've been working at the Lapworth Museum as a volunteer for the past four years and I came across this specimen of ammonite. Ammonites are normally used for stratification. They help to identify the ages of the rocks because they are widespread, evolve fairly rapidly and are easily preserved.

This particular specimen, Liparoceras (meaning ”fathead” because of its extreme width) cheltiense, comes from a quarry at Blockley in Gloucestershire and is special because of the state of preservation. Although most of the specimen is lithified and is buried in the matrix, some of the shell remains and shows the internal structure of the animal. In particular the body chamber walls; the scepter are well preserved and you can see how they become more extensive as they approach the edge of the shell, the surface of which can be seen on this specimen, suggesting that this improves the strength of the shell.

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Portland Screw Snail Fossil

Ellen, receptionist at the Museum, describes her choice of Object of the Month; a Portland Screw snail shell fossil.

Transcript

Hi, my name is Ellen. I work here on reception at the Lapworth Museum and my Object of the Month is the Portland Screw.

Now, you know, we all go on campus for a coffee and I'm always fascinated by the shapes that the bakers come up with for their cakes that are on sale. For example, the cinnamon swirl always reminds me of the curly snail. And one of my favourites is the cream horn and we just got obviously a pastry case here but it shows you the shape of the Portland Screw.

We have one here which is a modern day snail shell but it gives you an idea of the shape that was created. Now what's fascinating about these is how they create the spiral. The mollusc inside would have secreted more aragonite on one side than the other, and therefore create the equiangular spiral of the shell. And, as it grew, then shell grew with it.

These over time obviously sank to the sea bed and the acid waters and the carbonite muds replaced the shell itself. And that's what's fascinating about this particular rock sample we have here is that actually it leaves a cast, an echo of the shell inside, and you can see here, and here those forms.

What was unique about the Portland screw, and why it gets its name, is that it had an extra ridge around the edge of the shell which allows it to burrow into or screw into the sand in the shoreline which gave it an advantage over its other gastropod relatives as it was more difficult for a scavenger just to get it out of the sand.

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Sauropod Femur

Richard Butler, Academic Keeper at the Museum, describes his choice of a fantastic Jurassic dinosaur bone as Object of the Month.

Transcript

My name’s Doctor Richard Butler. I’m the Academic Keeper here at the Lapworth Museum of Geology and my Object of the Month is this fantastic Jurassic dinosaur bone.

This bone comes from rocks at about 165-million-year-old in the Cotswolds, about 50 miles to the south of Birmingham, and it was donated to the Museum a few years back. It belonged to a large, plant-eating dinosaur belonging to the group of dinosaurs that we call sauropods. So this is the group that includes animals like Brontosaurus, Diplodocus, Brachiosaurus and so on. Dinosaurs with very, very long necks and long tails.

This bone is a femur, so it’s the upper leg bone and it’s from the right side of the body. And what we can see is at the top of the bone we have the part of the bone which would have fitted into the hip socket, and at the bottom we have the knee joint. And then we can see this large lump on the rear surface of the bone – and that’s where powerful muscles would have been attaching in life which would have pulled the leg backwards as the animal was walking along.

So we’re not exactly sure which dinosaur this belonged to. It may possibly have belonged to a dinosaur called Cetiosauriscus, which is known from rocks of the same age but in other parts of the Midlands. Cetiosauriscus would have been up to about 12 tonnes in weight. That sounds pretty big, but for a sauropod it’s actually pretty small. Sauropods got up to maybe 80 tonnes in size and their femura could be up to two metres in length.

We're very lucky to have this is very unique specimen here in the Lapworth Museum of Geology so please do take the opportunity to come and see it.

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Lapworth's Notebook

Derren Cresswell, a PhD student in structural geology, describes his choice of one of Charles Lapworth's field notebooks as Object of the Month.

Transcript

Hi I'm Derren Cresswell, a third year PhD student in structural geology. My chosen object is this collection of field sketches and maps produced by Charles Lapworth. My interest in these stemmed from my undergraduate studies in the early 1990s where, during field trips to North Yorkshire and the Isle of Arran, much of the theory I'd been taught in lectures and laboratories was put into practice and began to take deeper significance. How small observations made in the field can provide insight into geological processes and help us develop a three-dimensional understanding of the rocks and structures that lie beneath our feet.

Lapworth, who initially trained as an art teacher, was an amateur geologist living in the southern uplands of Scotland where he undertook field studies. By detailed field mapping and careful observations with fossil graptolites he managed to provide a new interpretation not only of the structure of the rocks that form the area but also provide the detail in understanding how the sequence in evolution of the animals preserved as fossils allow us to understand the relative ages of the rocks formed 540-420 million years ago. It was this work that led to his appointment as Professor of Geology at Mason College, the forerunner of the University of Birmingham.

Lapworth’s maps and notes show very clearly how he came about this understanding. Simple maps are used to evolve ideas into much more detailed three-dimensional understanding of the geological structure. By nature, I'm not a very neat writer or drawer so I’ve had to develop techniques that allow me to record observations accurately. It is reassuring to see that Lapworth’s notes and maps are a mix of beautifully drawn cross-sections and maps, and quickly drawn conceptual ideas and rapidly written, very brief notes and annotations. The latter being more akin to my own scruffy notebooks.

Despite advanced techniques for looking at the earth, all geological ideas should be observed in the rocks. The skill of making and recording observations and interpretations is still essential for modern geologists. Lapworth’s field books are both a reminder how our understanding has developed and of the key skills that make good scientists; making observations and recording them.

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Smilodon Skull

Anna, Learning and Community Development Officer at the Museum, describes her chosen Object of the Month; the skull of a sabre-toothed cat.

Transcript

Hi, I'm Anna and I work here at the Lapworth Museum of Geology and this is my Object of the Month. This is a Smilodon or a sabre-tooth cat. They are commonly referred to a sabre-toothed tigers but this is incorrect. They're not related to tigers, they're not actually even related to modern-day cats.

So the sabre-tooth cat was alive between the Pleistocene and the Holocene, which is often referred to as the Ice Age. They were alive with creatures such as the woolly mammoth, which was their prey. And the most interesting feature on a saber-tooth is these large canine teeth which are called sabres, which gives it its name. And these sabres have a specific purpose they're really weak and they're quite fragile. They're not very good at ripping away flesh which most people think they're used for. They're actually designed for a specific purpose of hitting an animal's windpipe or their jugular vein which would cause instant death.

Another interesting feature about the sabre-tooth is how far it can open its mouth. It can get to almost 180 degrees. If we have a look, we can open its jaws this far, and it's really far, and it needs to be able to do that in order to get anything in its mouth. If it did anything less it’s not going to get anything past those massive sabres. And I'm reliably informed you can fit a human head in there.

Another distinctive feature on the sabre-tooth is these holes. These are not its eye holes, these actually its whisker holes. Its eye sockets are here. And cats have a really specific purpose for whiskers. Their whiskers are as long as the widest part of the body, which tends to be their hips. So if they put their head in a hole and their whiskers touch the edge they’ll back away and know that they can't fit in. So the sabre’s a really, really cool animal in my opinion and you can learn lots more about it here at the Lapworth and all other animals in the Ice Age. So come and visit us.

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Lava Bomb

Jay, a Visitor Services Assistant at the Museum, describes his choice of a lava bomb from a New Zealand volcano as Object of the Month.

Transcript

Hello. My name's Jay and I work at the Lapworth Museum of Geology, at the University of Birmingham. I'm here today to talk to you a little bit about one of my favourite objects, the lava bomb. Lava bombs interest me because they come from the heart of the Earth. They come from a place that's beyond imagining really. They are formed deep within the earth from molten rock with gasses suffused in them. And this is one.

This particular beauty came from Mount Tarawera in the North Island of New Zealand. New Zealand is particularly special to me because my wife’s from there, and this volcano was involved in a very infamous eruption in 1886 killing 120 people, mainly Mauris, and demolishing what was known then as a wonder of the world, the Pink and White Terraces which are now sadly lost to humankind. We have pictures of them.

Now lava bombs don't come out looking like this. Think of a volcanic crater as like a big pot of stew boiling away and the gases force these out at thousands of miles an hour. Some fly miles through the air and are as big as cars. This one fell probably just down the side of the crater, tumbling down, still boiling hot. You can see all these striations down the side and that's from the air passing by whistling around it. And also you can see the bubbling there where the gases were escaping.

They connect us to the earth, and it formed in geological processes that date back to the dawn of time and they're still going on forming our Earth today in places like Hawaii and New Zealand and Iceland. And that's why I love lava bombs.

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Gypsum

Jack, a Geology PhD student at the University of Birmingham, describes his choice of a spectacular piece of gypsum crystal as Object of the Month.

Transcript

I’m Jack and I am a geology PhD student here at the University of Birmingham and my object of the month is this stunning piece of gypsum. Now if we take a closer look at the label we can see That it’s from a small town named Manangatang in Australia. We can also see that it’s been donated by a man by the name of M. Durbridge.

Now gypsum is the most common sulphate mineral in the world and taking a closer look at this amazing specimen, we can see two main styles of crystals: one much finer and more needle-like, and one much larger and clearer. This second type of crystal is known as Selenite.

Now this specimen will probably have formed within a void within a rock and it will have been filled with mineral rich water and these crystals need heat and space to have grown. A really spectacular case of this is the “Cave of Crystals” in Mexico and they have giant selenite crystals up to 10m big.

Because of the really fine texture of the needle-like crystals, we’re actually getting some sand particles trapped amongst them. This is giving it this kind of pink tinge. You can see it trapped around some of the larger crystals as well.

As you can see here at the Lapworth Museum at the University of Birmingham we’ve got some really spectacular crystals and minerals and I’d recommend anyone to come and see them, and come and check out my object of the month.

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Please note: the following videos were filmed before the Museum's redevelopment and feature outdated views of the building interior.

Shotton's Normandy Landing Maps

Carrie, a work experience student, talks about her choice of Object of the Month, Fred Shotton's Normandy Landing Maps.

Transcript

My name's Carrie and I go to King Edward the Sixth High School for Girls just across the road from here and I was here for a week during the summer to do work experience and as part of this I studied these maps and several objects to write up an Object of the Month piece for them.

So this map is a map of Normandy, well part of Normandy beaches and it was produced by, partly, Professor Frederick Shotton. He was a Professor of Geology here at the University of Birmingham and before he got into making maps he was involved in studying the Pleistocene period in the East Midlands. So when it came to during the war he moved into the Middle East to study finding water for British troops and then when the Normandy landings came up they needed to work out where they were landing and whether they were going to sink if they drove tanks around. So he was involved in planning and finding these beaches that they could land on and also finding a similar British beach that they could practice on. So this is what this map shows. It's part of the Anglo-Canadian invasion area and all around here you've got areas of sand where they say you can't land because there's yielding areas hidden under clay and pools of water.

These photos show the British beaches where they practiced. There's bombing trials here so that they could see what kind of craters they created, how that affected the surrounding areas of beach. We got some papers here which show his report of where he wrote up where the best places to land would be and where they shouldn’t land and maybe other things he's seen when he flew over the Normandy beaches. Because one of the ways he found this information was he modified a Mosquito aircraft; he put a glass bottom on the fuselage that enabled him, when he flew over the beaches, to actually physically look on the beach and see whether there were buildings there, things that weren't showning on maps.

In my opinion, one of the most ingenious methods he used was he looked at the tyre tracks that vehicles on that beach had made so he could see how far they had sunk and what kind of shapes they've made in the beach and then he could work out what shapes, and whether they would sink or be able to move easily, what the British tanks and vehicles would do.

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Pinus yorkshirensis

Ben Slater from the University of Birmingham talks about this unique fossil pinecone.

Transcript

I'm Ben Slater and I work on palaeontology here at the University of Birmingham.

What this is is a microscope slide of the oldest fossil pinecone in the world. There's an interesting story behind this specimen. It was originally found on an undergraduate field trip to the Yorkshire coast many years ago. The specimen was brought back here to the Lapworth Museum and deposited in the collections and it remained in the archives for many years until recently when a palaeobotanist working here at the University of Birmingham was rummaging through the collections and came across the specimen. The fossil caught his eye because fossil pinecones are exceptionally rare, especially of this level of preservation and detail. So, a team of researchers from around the world was assembled to look at this specimen. One of the first things they wanted to do was to determine the age of the specimen. Previously the label on the fossil only told you that it was from Yorkshire and it had no details of the age or where specifically it was found.

So, one thing you can do with sedimentary rocks, which fossils occur inside, is look at the microfossils inside the rock to determine the age and this came back, after studying the pollen and spores inside the rock, that it was 131 to 129 million years old. This placed the fossil pinecone at over five million years older than the previous record holder for the oldest pinecone in the world, which is significant in itself. Another reason this fossil is significant is because it is exceptionally preserved. One thing that palaeobotanists want to do is extract as much information from a fossil as they possibly can. One way of doing this is to section it a different variety of angles so that they can build up an internal three-dimensional picture of the anatomy of the fossil inside. This research was then published in the International Journal of Plant Sciences as part of a collaboration between workers here at the University of Birmingham and in North America and at the British Geological Survey.

I think the pinecone makes a good Object of the Month because it demonstrates that the research collections here at the Lapworth Museum are world class and contribute to ongoing scientific research. It also shows that some older fossils that are remaining in the archives can still throw up a few surprises.

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Charles Lapworth's Microscope

Emma, a student from University of Melbourne, talks about Charles Lapworth's Microscope.

Transcript

I’m Emma, I’m a student at University of Melbourne and I’m here at University of Birmingham to study your vast collections and at the Lapworth Museum of Geology I’ve chosen this object here as the object of the month. It is Lapworth’s microscope. He designed it and it was produced in Birmingham to study the graptolites. I’ve selected this microscope for the object of the month because I really believe it highlights the diversity of the collection and it reinserts Professor Lapworth and his assistants into the museum narrative and reminds us of his achievements.

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Crotalocephalus Trilobite

Katie, Assistant Curator at the Lapworth Museum of Geology, talks about her favourite geological object, Crotalocephalus.

Transcript

My name's Katie, I work here at the Lapworth Museum as Assistant Curator. I'm here to talk to you today about a trilobite. Trilobites lived 525 to 250 million years ago. Like all arthropods they had an exoskeleton made up of three distinct parts. The cephalon, which is the head here, and the segmented body which is the thorax and the pygidium or tail. So this was all to protect the soft body parts which you can see here. When trilobites first appeared in the rock record in the earliest Cambrian they already had this complex exoskeleton as well as the world's first complex visual system. They were very diverse and they had already diversified over a wide range of environments from shallow to deep water environments.

The trilobite I'm going to talk to you about today is called Crotalocephalus. It was found in the Anti Atlas in the Morocco region and it's from the Devonian period so it's actually 415-400 million years old. As you can see it's got very well preserved pygidium and pleural spines which you can see just about here. These would have been used to protect it from predators as well as to stop it sinking into the soft sediment. So it's likely that it would have lived on the sea floor and its glabella here, which is on the cephalon, is likely to indicate that it would have been a predator and it would have collected prey.

Trilobites as a species lived for over 275 million years. Over this time they did actually have a lot of extinction events to contend with. During the Devonian however their luck was coming to an end and the group was actually confined to just one order, which was the Proetida. So the order Proetida was restricted to shallow shelf environments. In the middle Permian unfortunately there was a major regression, which is a sea level fall, so this further restricted them to the environment and they couldn't survive when the end Permian mass extinction wiped out 95% of marine life so, unfortunately, the trilobites came to an end.

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Odessa Meteorite

Carrie, a work experience student, talks about her choice of the Odessa Meteorite as the Object of the Month.

Transcript

My name's Carrie and I go to King Edward the Sixth High School for Girls just across the road from here and I was here for a week during the summer to do a week of work experience.During that I researched several objects to go as Object of the Month pieces.

This piece is a meteorite and it fell probably around 60,000 years ago during the pleistocene and it fell in Odessa in Texas, America. The actual material is, well, metal and it is much older than anything you'll find on Earth. It was probably created around the formation of the Solar System and you've all this material flying around in space and if it happens to pass through the Earth's orbit it can get attracted by the Earth's gravity. As it's attracted by the Earth's gravity, it starts falling through the atmosphere and as it falls through the atmosphere it burns up a bit, it gets broken up and any bits that land fall as meteorites on the Earth's surface, and this is what this did.

If you look at the impact craters around where these pieces were found there’s around 1,200 meteorites that have been found there. The largest of which, as a chunk, was over 100 kg in weight. This piece is much less than that but it still shows many of the characteristics of a typical meteorite. It's mainly made of iron and around the edge you can see a fusion crust and that's from where as the metal fell through the atmosphere it got heated up by friction and starting almost burning up in effect and that's why you see these blackened edges around the edge.

If you look closely there's also a feature that you won't find on any rocks terrestrially on earth and this is called the Widmanstätten structure and it's a series of interlocking crystals of two different minerals made of iron and nickel and on this meteorite they are about 1.6mm in width, each of these individual structures. But you can't see this on Earth so we can only see this on meteorites and not all meteorites have it even.

There’s also a nodule here this is , well it can be formed from lots of things, it's mainly graphite and it can be formed by as the meteorite or as the meteoroid, which is what they are called in space, as it was forming bits of material maybe got attracted by its strong gravitational field or by convection in the molten metal and you'd get different areas of different pieces of mineral.

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Hemicyclaspis murchisoni

Plamen, a PhD student at the University of Birmingham, talks about Hemicyclaspis murchisoni.

Transcript

My name is Plamen, I'm a third year PhD student in the University of Birmingham. My project deals with fossil sharks but today I'm going to present something different and it's a really bizarre looking jawless fish from the Upper Silurian.

There is a big morphological gap between jawless vertebrates and jawed vertebrates and this gap is filled in mainly by fossil taxa from the Paleozoic. It's a really diverse group of jawless fish from the Paleozoic. Studying these groups is really important to understand a major transition in the evolutionary history of vertebrates which is the origin of jawed vertebrates, or jawed fish. One of the most interesting groups in that respect is the osteostracans which are considered as a group which is the most closely related to jawed fish because they exhibit some really derived characters. We have a lot of osteostracan specimens here in the museum but this one here is particularly important because it shows pretty much the whole fish, minus the tail. So we have the head and the body attached to each other.

This specimen was donated to the museum in 1974. It comes from the Coronal Sandstone which had been dated at that time as Carboniferous but after the discovery of this specimen we know now that the age of this rock formation is Upper Silurian. If we look at a model of a closely related genus you can see some of the derived features of osteostracans and particularly these pectoral fins. Osteostracans possess a really important feature that, kind of, links them to jawed vertebrates and that's the development of paired fins and it's through examination of such well preserved specimens that we know about that because, in this specimen, you can them right here.

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Rutile Quartz

Celine, a work experience student from King Edward School for Girls in Edgbaston, describes this rutile quartz.

Transcript

Hi, I’m Celine Shaw and I’m from King Edward’s in Birmingham and I’m here for a week on work experience. Here I have some rutile in quartz. The outside is quartz, it’s transparent and it’s composed primarily of silicon dioxide and inside there are some rutile crystals and they consist of titanium dioxide.

The rutile is quite interesting because it has the highest refractive index of any known mineral and it also exhibits a high dispersion, which is why, when it’s found in other minerals, it often appears in long shots of colour and thin. The name derives from the latin word Rutilis which means red and it’s given this name because often it’s quite intense red colour. In this example it’s actually quite slivery and here it’s also quite silvery, kind of golden, so there’s variation in colour.

So, rutilated quartz is often found in, to name a few countries, in Madagascar, Sri Lanka, India and Switzerland. In fact in Switzerland there’s quite a lot of rutilated quartz and they call it 'flèches d’amour', which means arrows of love. They call it this probably because there’s quite a lot of acicular crystals penetrating the quartz and it looks like love arrows.

Because it’s so uniquely beautiful it’s often used as a gemstone in jewellery and decoration and it’s thought by some Earth-based religions that this gemstone can relieve feelings of loneliness and depression and it can also empower originality and bring personal strength.

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Honorary Doctorate Speech for Marie Curie

Olivia, a volunteer at the Museum, shows a transcript of the speech given when Marie Sklodowska Curie was awarded an honorary doctorate at the University of Birmingham in 1913.

Transcript

My name is Olivia and I'm a volunteer here at the Lapworth Museum of Geology. The Object of the Month I have chosen is this, which is the speech given by the principal of the university, Sir Oliver Lodge, when the University of Birmingham awarded Marie Sklodowska Curie an Honorary Doctorate in 1913.

Marie Curie was a Polish-born physicist. She and her husband Pierre discovered two elements, Polonium and radium, and were awarded a Nobel Prize in physics in 1902. Marie was the first women to ever be awarded a Nobel Prize and she won one later in 1911, this time in chemistry, making her the first person to ever win two Nobel Prizes in separate fields. Marie discovered that radiation destroyed unhealthy cells quicker than healthy ones, making her research the foundation of radiography.

At the beginning of her career she was rejected from a Polish university because she was a woman and the Nobel Prize in 1902 originally was only going to be awarded to her husband Pierre and one of their fellow male scientists. After protesting this decision Marie was also included in the award. The same prejudices that faced Marie Curie were prevalent in all areas of academia. Charles Lapworth, however, was a strong advocate for women in the sciences and campaigned to let women be allowed into the Geological Association. Even though he faced strong opposition, women were allowed to attend meetings from 1904 and from 1919 were allowed to become fellows.

As the damaging effects of radiation were not known at the time, Marie Curie completed her research without using proper protective gear. Sadly, in 1934 she died from the effects of radiation poisoning. At the end of his speech, Sir Oliver Lodge calls Marie Curie “the greatest woman of science of all time” and today she is still one of the best known women scientists. Her research into radiation has paved the way for radiology, which still saves lives today.

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Allende Meteorite

Celine, a work experience student from King Edward School for Girls in Edgbaston, describes the Allende Meteorite.

Transcript

Hi, I’m Celine Shaw from King Edward’s in Edgbaston and I’m here for a week on work experience. I’ve chosen this Allende meteorite, a small, fragment, for the Object of the Month. It was the largest carbonaceous chondrite ever found on Earth, roughly the size of a car, and it was spotted, a giant fireball, falling over the Mexican state of Chihuahua on the 8th of February 1969.

As it exploded it into scattered into thousands of fusion-crusted individuals. As you can see there’s the fusion crust here, it’s got like
a glossy finish and this would have formed because as the fireball was falling it was falling at great speeds, say about 10 miles per second and this would have produced a lot of heat and melted the exterior.

As it exploded it was dispersed over quite a large area and there was an extensive search for all the pieces. It was actually described as the most studied meteorite in all of history.

It was important for research purposes because of its rarity as it accounts for less than 5% of all the chondrites on Earth. And also inside there’s lots of calcium-rich inclusions which are among the oldest objects in the Solar System. Unlike other chondrites it doesn’t include any iron or nickel so it’s unusual from that aspect.

This chondrite would have formed in the Solar System a few million years ago and it would have been formed by the accumulation of dust and grit particles all clumping together and, as you can see, in the internal structure – as it’s been cut and polished it’s more visible – there’s some dark chondrules and also some white-coloured calcium and magnesium rich inclusions. Also there’s some smaller, millimetre-sized, chondrules which are only found in meteorites and not in Earth rocks.

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Pahoehoe Lava

William, a third year Geology and Geography student, talks about a volcanic rock specimen from Mt Meru in Tanzania, which may have been from the most recent eruption in 1910.

Transcript

Hello my name is William and I am a third year joint honours Geology and Geography undergraduate at the University of Birmingham. My Object of the Month is this volcanic rock specimen from Mt Meru in Tanzania and may have been from the most recent eruption in 1910. Mt Meru is the 2nd highest mountain in Tanzania after Kilamanjaro and as you can see this particular rock specimen has a ropey appearance. The name for this specimen is translated from Hawaiian and is known as pahoehoe.

Pahoehoe forms where cooling basaltic lava will spread out as it erupts from the volcano. A thin elastic skin will congeal on the surface of the lava. As molten liquid lava continues to flow beneath the elastic skin because this lava has not cooled as much it will influence the top surface giving us the ropey appearance that we see. Once the lava cools completely, this shape will be retained.

If I turn this specimen around, you can see that there are actually vesicles on the side here and flow can be indicated by these. The vesicles align themselves at the path of flow and are formed where the gas escapes once the lava cools.

Pahoehoe forms from mainly basaltic lava flows which are rich in iron, silica, magnesium and calcium. This basalt rock has a low silica content and affects how viscous a lava is. In terms of pahoehoe, low silica means the flow of the lava would have been less viscous therefore fast flowing. Basalt can form many different types of geological features such as sills, dykes and pillow lavas. These impact the surrounding environment where erupted material can completely swamp the land making it inhospitable for humans and other organisms to live.

People living close to active volcanoes such as Meru are at risk of their eruptions and their subsequent lava flows and the nature of those flows is dependent upon the chemical make-up of the lava. This object demonstrates the variable features of lava and the processes required for igneous rock formation that makes up the Earth’s surface.

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Flexible Sandstone

Ashley, a volunteer from Bishop Vesey's Grammar School, describes his favourite object, this flexible sandstone.

Transcript

Hi I’m Ashley, from Bishop Vesey’s in Sutton Coldfield and I’m volunteering here throughout the summer.

This may look like your bog standard piece of sandstone but actually, as you can see, it’s flexible.

It was found in Jhajjar, in India near Delhi, and has been lying here in the stores for a very long time.

The flexibility of these sandstones has puzzled geologists for many years and led to much discussion about why it’s so wobbly. Flexible sandstone was first discovered in the small area of Morro do Itacolomi in Brazil in 1822. It was thought to be a new type of rock, gaining it the name Itacolumite. Unfortunately it wasn’t a new rock and it was actually a sandstone formed from the decomposition of gneisses which contained feldspar grains.

This sediment accumulated together just like any old sandstone, but the feldspar grains continued to decompose. This would have left lots of empty spaces within the rock leaving it a lump of loosely interlocking grains of quartz. Where the quartz grains interlink with their neighbors, quartz crystals have grown creating joints, these are like your elbow or knee and allow the rock to manoeuvre like a wobble board. But in case you were wondering, the whole cliff or bed where this was lying wasn’t all wobbly, it’s only flexible when you cut it into thin sheets like this.

Platy minerals such as micas are sometime found in these sandstones but they don’t affect the flexibility. In some cases these sandstones are found to lose their flexibility as they dry out. So you better make the most of it while it’s still limber.

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Woolly Mammoth Tooth

Olivia, a volunteer at the Museum, describes her choice of a 40,000 year old woolly mammoth tooth for the Object of the Month.

Transcript

My name is Olivia and I’m a volunteer here at the Lapworth Museum of Geology. The Object of the Month I have chosen is this mammoth’s tooth which is 40,000 years old.

It was excavated from Upton Warren in Worcestershire in 1955 by Professor Shotton and his research assistant Russell Coope. I don’t have a paleontological background or any sort of geological background, I chose this object purely because of how impressive it is. This single tooth really gives you the impression of how big these animals were.

There were several types of mammoth. This is from a woolly mammoth, which is probably the best known. Woolly mammoths lived in Britain during the Ice Age. To stay warm they grew thick woolly coats and grew very large to maintain their body heat. They were about the same size as modern African elephants and could grow up to 11 feet at the shoulder.
Woolly mammoths had four molar teeth, two at the top and two in the bottom jaw. You can see that the surface of the tooth is ridged, which tells us a lot about their diets.

Mammoths lived off grasses and shrubs and the ridges in their teeth helped grind up the vegetation to aid digestion. Earlier types of mammoth had less ridges in their teeth and this was because they were living off softer plants in wooded areas. Woolly mammoths, the vegetation they would have eaten would have been a lot tougher and there would have been a lot more grit and soil in each mouthful. So they evolved more ridges in their teeth so the teeth would last longer. Despite this tough surface, they still had six sets of teeth throughout their lifetime – similar to how we have milk teeth as infants and then we develop adult teeth. Each replacement tooth would be larger and have more ridges as the growing mammoth would need to increase its food consumption.

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Pyrite

Dave, an undergraduate Geology and Geography student, describes his choice of the mineral pyrite as Object of the Month.

Transcript

Hi, my name’s Dave and I’m a third year undergraduate at the University of Birmingham studying Joint Honours Geology and Geography.

For this month’s Object of the Month I have chosen the mineral pyrite, more commonly named as Fool’s Gold - so called because gold and pyrite look very similar. They can, however, be distinguished by a simple hardness test. If I scratch the surface of this pyrite with my nail you can see it leaves no visible mark. However if I was to do the same to a piece of gold it would leave a very obvious scratch on the surface.

Pyrite has the chemical formula FeS2, meaning it is made up of one iron molecule, Fe, and two sulphur molecules, S. These then combine to form the cubic structure. This is a single pyrite crystal which you can see forms a perfect cube. A cube is not the only crystal shape that pyrite can form, however, and it can form many other crystal shapes including pyritohedrons, a twelve-sided shape named after the mineral.

The cubic structure, while not unique to pyrite, is rarely this perfect. Stacked crystals can form weird and wonderfully-shaped agglomerations like you can see on this sample here. The perfect cube structure, along with the metallic sheen of the mineral, is why I have chosen this to be my Object of the Month.

One common way of forming pyrite is in a deep marine setting after the deposition of organic-rich sediments. Bacteria breaks down the organics forming bisulphide, the S2 component of pyrite. This then reacts with an iron compound forming pyrite. This can result in fossils being preserved as pyrite as the mineral replaces the decaying organic material preserving the original fossil structure. This is a process called pyritisation. You can see this very clearly in this fossilised fish where the scales are perfectly preserved in pyrite. It can also be seen in this goniatite, where the shell has been completely replaced by pyrite.

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Fossil Trackways

Daniel Cashmore, an MSci undergraduate student studying Palaeobiology and Palaeoenvironments, describes these fossil trackways.

Transcript

My name’s Daniel Cashmore and I’m an MSci undergraduate student studying Palaeobiology and Palaeoenvironments here at the University of Birmingham. My Object of the Month are these Late Carboniferous tetrapod footprints from Alverley in Shropshire. The footprints themselves were made by several temnospondyl amphibians, and temnospondyls are ancestral forms of modern-day amphibians, things like frogs and salamanders.

The tracks preserve the impressions of both the forefeet and the hind feet of the animals. A larger specimen here shows you this clearly. Here’s the forefoot and the hind foot and they overlap because of the way the animal moved and was travelling across the sediment. Tracks like these4 can be used to understand how the animals moved and even tell us how fast they were going. This specimen here, for example, shows the trace of one of the animals dragging its tail behind itself as it walked.

My Object of the Month is one of many specimens derived from the red sandstone beds of Alverley in Shropshire. Altogether they form an extensive and diverse community consisting of early reptiles and amphibians. The majority of these trackways were found by Dr Frank Raw in 1914 and 1919 and have been housed in the Lapworth Museum ever since. The collection consists of over 200 individual trackways and is the most complete collection of tracks of its age in the UK.

The footprints are preserved in sandstone layers and would have formed in very shallow water within an ancient alluvial floodplain. The actual footprints themselves are preserved as convex hypo-reliefs, which means that they are raised up instead of being depressed like the original footprint. So what we’re seeing is actually a natural cast of the original footprint that would have been formed within a different layer of sediment, say like a soft mud. Then after rapid deposition of the sandstone layer on top of the soft mud the sand would infill the imprint on the mud and preserve it as a positive relief on the base of this sandstone layer.

The footprints are quite significant because of their age. Their presence in the fossil record has extended the range of temnospondyls from latest Carboniferous/earliest Permian, further back in time to the mid-to-late Carboniferous.

The actual assemblage is also important because it marks the transition from an amphibian dominated community to one dominated by reptiles like that of the early Permian. And I personally believe it deserves Object of the Month because it preserves a specific moment in time that a group of animals walked across a floodplain some 301 million years ago and I find that quite amazing.

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