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1:250 000 Geological Map
This range of geological maps show the general geology of the area, they come in either folded (for taking on the field), or flat (for wall mounting)
Buy from UKGE |
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1: 50 000 Geological Map
This range of geological maps show the localised geology, they come in either folded (for taking on the field), or flat (for wall mounting)
Buy from UKGE |
Jurassic
GEOGRAPHY AND CLIMATE: Gondwanaland continues to break up, Graywacke,
shale and siliceous sediments formed. Continued mountain building.
mild, moist climates over most of the land.
TERRESTRIAL ANIMAL LIFE: Reptiles dominant with Crocodiles, turtles,
lizards and dinosaurs. Pterosaurs and Archaeopteryx take to the air.
Mammals begin to diversify. More advanced insects such as flies.
PLANT LIFE: Cycads, ginkos, conifers, ferns and tree ferns.
SEA LIFE: All major invertebrate groups well represented, ammonites and bivalves successful. Marine reptiles, Ichthyosaurs are Plesiosaurs. |
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Geological Guide to Chapmans Pool
Lower Kimmeridge Clay
When walking down the footpath from Chapmans Pool car park and over the farm field, you may notice some yellow/white rock fragments scattered along the fields, this is the portland stone and indeed this forms the crest of Chapmans Pool. Landslips however make the actual bed inaccessible.
The flat ammonite Pavlovia rotunda are from the Pavlovia Zone, there are plenty of these as this particular bed is some 30m thick at Chapmans Pool. Rotunda Nodules are also present here, being above this zone, but they are quickly snapped up by local collectors as they contain some excellent ammonites.
Field full of Portland Stone fragment
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Our International Rock
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