| 介壳岩的形成和生物埋藏反馈作用 |
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| 引用本文： | 陈源仁.介壳岩的形成和生物埋藏反馈作用[J].矿物岩石,1990(2). |
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| 作者姓名： | 陈源仁 |
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| 作者单位： | 成都地质学院 成都 |
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| 摘 要： | 某些介壳岩形成很快,另一些则需较长的时间.而形成介壳岩、介壳层和生物碎屑灰岩的介壳可以是原地堆积,也可以是外来的.它们可以堆积在海底之上或其下,经历简单的或多次的埋藏事件,依据介壳和沉积物堆积速率的关系,S.M.Kidwell曾于1986年提出4种成因类型.埋藏反馈作用主要研究活着的生物和死的生物遗体之间的相互关系,尤其强调死的生物组合对活着生物组合的影响.对于介壳岩的形成十分重要。
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| 关 键 词： | 介壳岩 风暴作用 埋葬反馈作用 古生物与古环境 埋葬学 |
GENESIS OF COQUINOID ROCKS AND TAPHONOMIC FEEDBACK |
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| Chen Yuanren.GENESIS OF COQUINOID ROCKS AND TAPHONOMIC FEEDBACK[J].Journal of Mineralogy and Petrology,1990(2). |
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| Authors: | Chen Yuanren |
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| Institution: | Chengdu collcge of Geology 610059 |
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| Abstract: | Coquinoid rock arc very commc in the stratigra phical record and arc preferred collecting sites for most palacontological data.Nonthclcss, most investigation only paid the attetion to the nature of fossils in the coquinas and analysed the biasing effects of selective hardpart transport and destruction before Now, the originie proccss,gcnctic classification and models of coquinoid rocks arc interested for more and more geologists. Some of the coquinas arc formed rapidly but others accumubtc over longer pcriods.The shells which concentrated to form conquinas,lumachcllcs, and bioclastic limestones may be indigenous or exotic to accumulation site,Thcy may accumulate on or below scafloor,and undergo sinplc or multiple episodes of burial cvcnt.In terms of the rate of sediments and skeletal accumulation, four genenic types of conquinoid rocks was suggested by S M. Kidwcll in 1986.
Taphonomic feedback is very importance Way for forming the conquinoid rocks.It focusscd on live/dead interactions of origanisms, especially to cmphosizc that not only docs the life assemblage influence the death assemblage but the death assemblage in turn affect the life asscmblogc. |
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