Download - Lathkill dale latest
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Lathkill Dale FieldtripGeology Presentation – 23.11.10
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Group and Roles
•Cheryl Bennett – Note Taker and Fossil researcher.
•Deb Royle – Photographer, Presenter and Rock researcher. •Michelle Townsend - Photographer and History writer. •Katy Dixon – Note Taker and PowerPoint designer.
•Kelly Marie Farnsworth – Photographer and Summary writer.
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Introduction
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Past and Present
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Lathkill Dale Map
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Entrance•Limestone bridge over river.•Fossils (mainly bivalve molluscs) have been revealed due to the wear of visitors shoes on the now polished stone.•Area was once a limestone mill featuring a large water wheel.
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Site One
Limestone rock on side of path.
Visible bedding planes dipping to the north.
Saturated with water allowing plans and fauna to grow.
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Site Two
Mining hole – would have been mined for iron and lead.
Mining in Lathkill Dale has taken place since the bronze age.
The hole would have been a way of draining the mine for ore. This method was called sough.
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Site Three
•Mandale Mine: this building is limestone as are the pilers used to carry water over the valley to power the water wheel.•There is a legal obligation to protect the area.•A popular potholing site.
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Site Four
Jacobs Ladder fossil area included; Brachiopods also known as Gigantas procuctus (pictured top right) and sea lilies.
Limestone was quarried by hammering in large pins, so as to split evenly (pictured bottom right).
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Site Four Continued
•Sea lilies, also known as “Derbyshire screw” consisted of a stalk and tentacles. When the lilies died they lay on the sea bed and were imprinted into the fossils we see today (pictured right and below).
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Conclusion
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Thanks for watching!