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Fossils of the Yorkshire Coast
Dr Liam Herringshaw -
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The F Word What are fossils? What is palaeontology?
Why are fossils important?
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What are fossils? Petrified remains of old, dead organisms
(Also trace fossils) Most things don’t get fossilized Best to live in the sea Best to have a hard shell
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Future coastal fossils?
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The fossilization filter
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Smith, Phillips & Yorkshire
Fossils & Strata Smith, Phillips & Yorkshire
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Yorkshire Coast Fossils
What, Where & Why?
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Geology of the Yorkshire Coast
Mesozoic – middle life
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The Early Jurassic: Redcar – Ravenscar
Redcar Mudstone Formation Staithes Sandstone Formation Cleveland Ironstone Formation Whitby Mudstone Formation
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“The Lias”
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Redcar Mudstone Formation
Robin Hood's Bay Redcar Earliest Jurassic unit on Yorkshire Coast - Divided into 4 members
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Redcar Rocks
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Robin Hood's Bay
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Gryphaea arcuata, an Early Jurassic 'oyster'
Common fossils Gryphaea arcuata, an Early Jurassic 'oyster'
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Rhizocorallium, Boggle Hole
Trace fossils Rhizocorallium, Boggle Hole
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Sandstones & Ironstones
Staithes Sandstones & Ironstones
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Staithes to Old Nab
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Sandstones with cross-stratification
Staithes Sandstone Fm Sandstones with cross-stratification Burrowed siltstones
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Cleveland Ironstone Formation
Transition from SSF to CIF, Penny Nab
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Fossils Belemnites, bivalves, woody debris
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Ironstone burrows Rhizocorallium, Old Nab
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Jet-powered Whitby Early Jurassic Whitby Mudstone Formation
Grey Shales Black Shales Alum Shales
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Bituminous → Alum Shales
Whitby–Saltwick Nab Bituminous → Alum Shales
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The Jet Rock – very high organic content
Fossil fuel! The Jet Rock – very high organic content
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Jet: a puzzle
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Ammonites Hildoceras Dactylioceras Harpoceras
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Bivalves Dacryomya ovum Alum shale 'nut shell' Pseudomytiloides dubius
The dubious, false mussel-like clam!
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Marine mudstone monsters!
Temnodontosaurus crassimanus
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Middle Jurassic
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Middle Jurassic: shallow and sandy
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World Famous Fossil Plants
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Soils, coals, roots Yons Nab, Cayton Bay
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Dinoturbation Cloughton Wyke
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Shallow marine burrows
Diplocraterion, Cloughton Wyke
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There are Jurassic burrows in the walls of the museum!
Traces of Yorkshire There are Jurassic burrows in the walls of the museum!
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Upper Jurassic
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Filey Brigg Birdsall Calcareous Grit: wedge of tough, limy sandstone
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Filey Brigg stratigraphy
Coarse-grained Limestones-sandstones Oolites Shelly fossils Trace fossils
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Big Brigg burrows!
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Jurassic-Cretaceous boundary somewhere in Filey Bay
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Cretaceous: Chalk on the board
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Speeton Clay fossils Ammonites, crustaceans, gastropods
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Chalk Group Very fine-grained shelly limestones
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Belemnites in red chalk
Neohibolites
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Hard northern chalk!
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Flamborough Sponge Beds
10m-thick sponge-rich interval (near Sewerby)
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Chalk fossils Inoceramid bivalves D, E, from Flamborough
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Chalk fossils Echinoids (sea urchins) Dane's Dyke- Sewerby
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end-Cretaceous
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Ice Age!
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The glacial coast
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Glacial erratics
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Further info Fossilhub: www.fossilhub.org Intro To Fossils
Sat. 20th Feb. 2016 Yorkshire Fossil Festival Sept. 16th-18th 2016 Scarborough
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Develop your interest
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