Phosphatization Through the Phanerozoic
Phosphatization Through the Phanerozoic
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DOI：
10.1007/978-90-481-8643-3_12
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发表时间：
2011-01-01
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影响因子：
--
通讯作者：
Dornbos, Stephen Q.
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文献类型：
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作者：
Dornbos, Stephen Q.
软组织和骨骼遗骸的磷酸化在时间上和分类上都随着显生体的变化而变化。寒武纪至早奥陶世，显微节肢动物和动物胚胎优先保存。磷化作用在古生代的其余部分并不常见，因为少数类群的顽固组织被保存在适宜居住的微环境中。从白垩纪到始新世，磷化作用又一次扩大，强烈倾向于已经富含磷灰石的鱼类遗骸。在显生界的整个历史中，磷酸化表现出对具有顽强组织的分类群的挖掘偏向，这些分类群具有顽强的组织可以抵抗有机腐烂的早期阶段，具有有机结构的分类群已经富含磷酸钙，在许多情况下，分类群具有较小的身体尺寸。寒武纪至早奥陶世期间的磷化脉动可能是由于该时期海底沉积物上部几厘米的混合层发育程度普遍较低，而白垩纪至始新世磷化作用的增强可能与大兴期陆缘海道的扩大有关。
Phosphatization of soft tissues and skeletal remains has varied temporally and taxonomically through the Phanerozoic. During the Cambrian through early Ordovician, microscopic arthropods and animal embryos were preferentially preserved. Phosphatization was uncommon during the rest of the Paleozoic, as recalcitrant tissues of a few taxa were preserved in hospitable microenvironments. The Cretaceous through Eocene saw another expansion of phosphatization, with a strong bias toward fish remains already enriched in apatite. Throughout its Phanerozoic history, phosphatization exhibited a taphonomic bias toward taxa with recalcitrant tissues that could resist the early stages of organic decay, taxa with organic structures already enriched in calcium phosphate, and, in many cases, taxa with small body sizes. The pulse of phosphatization during the Cambrian through Early Ordovician may have been facilitated by the generally lower levels of mixed layer development in the upper few centimeters of seafloor sediments during that time period, whereas the Cretaceous through Eocene increase in phosphatization was possibly related to the enlargement of euxinic epicontinental seaways.