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Cretaceous strata exposed in the vicinity of Portsdown Hill contain some spectacular, thick (about 200 m) chalk deposits. This site discusses the physical character and distribution of the chalks, how they formed, the fossils they contain, their utility for interpreting Cretaceous paleogeography and their importance as a natural resource. Other topics include coccoliths, Cretaceous chalk outcrops in the USA and chalk as a reservoir for oil, water or gas.
Subject: Geoscience:Geology, Biology Resource Type: Scientific Resources:Overview/Reference Work Focus on the Cretaceous: Economic Resources, Stratigraphy, Paleontology, Paleogeography Topics: Earth surface, Biosphere, Time/Earth History
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