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Fossils of the Yorkshire Coast

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1 Fossils of the Yorkshire Coast
Dr Liam Herringshaw -

2 The F Word What are fossils? What is palaeontology?
Why are fossils important?

3 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

4 Future coastal fossils?

5 The fossilization filter

6 Smith, Phillips & Yorkshire
Fossils & Strata Smith, Phillips & Yorkshire

7 Yorkshire Coast Fossils
What, Where & Why?

8 Geology of the Yorkshire Coast
Mesozoic – middle life

9

10 The Early Jurassic: Redcar – Ravenscar
Redcar Mudstone Formation Staithes Sandstone Formation Cleveland Ironstone Formation Whitby Mudstone Formation

11 “The Lias”

12 Redcar Mudstone Formation
Robin Hood's Bay Redcar Earliest Jurassic unit on Yorkshire Coast - Divided into 4 members

13 Redcar Rocks

14 Robin Hood's Bay

15 Gryphaea arcuata, an Early Jurassic 'oyster'
Common fossils Gryphaea arcuata, an Early Jurassic 'oyster'

16 Rhizocorallium, Boggle Hole
Trace fossils Rhizocorallium, Boggle Hole

17 Sandstones & Ironstones
Staithes Sandstones & Ironstones

18 Staithes to Old Nab

19 Sandstones with cross-stratification
Staithes Sandstone Fm Sandstones with cross-stratification Burrowed siltstones

20 Cleveland Ironstone Formation
Transition from SSF to CIF, Penny Nab

21 Fossils Belemnites, bivalves, woody debris

22 Ironstone burrows Rhizocorallium, Old Nab

23 Jet-powered Whitby Early Jurassic Whitby Mudstone Formation
Grey Shales Black Shales Alum Shales

24 Bituminous → Alum Shales
Whitby–Saltwick Nab Bituminous → Alum Shales

25 The Jet Rock – very high organic content
Fossil fuel! The Jet Rock – very high organic content

26 Jet: a puzzle

27 Ammonites Hildoceras Dactylioceras Harpoceras

28 Bivalves Dacryomya ovum Alum shale 'nut shell' Pseudomytiloides dubius
The dubious, false mussel-like clam!

29 Marine mudstone monsters!
Temnodontosaurus crassimanus

30 Middle Jurassic

31 Middle Jurassic: shallow and sandy

32 World Famous Fossil Plants

33 Soils, coals, roots Yons Nab, Cayton Bay

34 Dinoturbation Cloughton Wyke

35

36 Shallow marine burrows
Diplocraterion, Cloughton Wyke

37 There are Jurassic burrows in the walls of the museum!
Traces of Yorkshire There are Jurassic burrows in the walls of the museum!

38 Upper Jurassic

39 Filey Brigg Birdsall Calcareous Grit: wedge of tough, limy sandstone

40 Filey Brigg stratigraphy
Coarse-grained Limestones-sandstones Oolites Shelly fossils Trace fossils

41 Big Brigg burrows!

42 Jurassic-Cretaceous boundary somewhere in Filey Bay

43 Cretaceous: Chalk on the board

44 Speeton Clay fossils Ammonites, crustaceans, gastropods

45 Chalk Group Very fine-grained shelly limestones

46 Belemnites in red chalk
Neohibolites

47 Hard northern chalk!

48 Flamborough Sponge Beds
10m-thick sponge-rich interval (near Sewerby)

49 Chalk fossils Inoceramid bivalves D, E, from Flamborough

50 Chalk fossils Echinoids (sea urchins) Dane's Dyke- Sewerby

51 end-Cretaceous

52 Ice Age!

53 The glacial coast

54 Glacial erratics

55 Further info Fossilhub: www.fossilhub.org Intro To Fossils
Sat. 20th Feb. 2016 Yorkshire Fossil Festival Sept. 16th-18th 2016 Scarborough

56 Develop your interest


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