Life's a beach: lessons from the Earth's rarest sedimentary rocks |
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| Authors: | T. Huw Sheppard |
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| Affiliation: | British Geological Survey, Columbus House, Greenmeadow Springs, Tongwynlais, Cardiff, CF15 7NE, UK |
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| Abstract: | Ancient rockshore deposits are the rarest sedimentary rocks on Earth. Less than 200 examples span the planet's entire history, but they preserve important records of past environments, including sea-level changes and unusual fossil communities. The most celebrated example, dating from the earliest Jurassic, is found at Ogmore-by-Sea in South Wales. This article describes the history of environmental change at Ogmore, and why these rocks can help us to interpret the deposits of ancient rocky shores world-wide. |
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