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bioclastic |
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bioclastic [ˌbaɪəʊˈklæstɪk] adj (Earth Sciences / Geological Science) (of deposits, esp limestones) derived from shell fragments or similar organic remains How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Apart from brachiopod valves and spines, the only other volumetrically important bioclastic components are echinoderms. For this study, a fragmented shell was defined as a bioclastic particle representing less than 90% of a whole valve. There are scattered bioclastic packstone and grainstone horizons which commonly show fining upward (Wong, 2002); these represent deposition during brief storm events. |
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