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Home / Landscape & Geology / Dorset Coast and Geology / Lulworth Area Formation- Types of Rock / Picture 3 of 12 -Lulworth –Types of Rock – Purbeck Beds
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The Purbeck beds are made of clays, shales, mudstone and limestone. They were deposited 147 million years ago. At the time of deposition this area lay in a large shallow low-lying lagoon. Minor variations caused water conditions to vary enormously between salty, brackish and freshwater, the clima...

Picture 3 of 12 -Lulworth –Types of Rock – Purbeck Beds

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The Purbeck beds are made of clays, shales, mudstone and limestone. They were deposited 147 million years ago. At the time of deposition this area lay in a large shallow low-lying lagoon. Minor variations caused water conditions to vary enormously between salty, brackish and freshwater, the climate was also changing wetter and warmer unsettled conditions resulted in the formation of a series of varying rock strata within the Purbeck beds. These complex rocks are rich in fossils including dinosaur and crocodile foot prints
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Added:
7th Dec 2005 by Diane Earl

Subjects:
 Geography, Science

Key Stages:
 Key Stage 3, Key Stage 4, Key Stage 4+

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