REWORKED EARLY DIAGENETIC CONCRETIONS AND THE BIOEROSIONAL ORIGIN OF A REGIONAL DISCONTINUITY WITHIN BRITISH JURASSIC MARINE MUDSTONES
The Coinstone is a well known hiatus-concretion level in the Lower Lias (Lower Jurassic, Upper Sinemurian) of Dorset. It has long been recognized as a layer of bored and encrusted, early diagenetic, clay-hosted septarian concretions coincident with a biostratigraphic gap of three ammonite subzones....
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| Formato: | Journal article |
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1992
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