Discussion on Taphonomy of Early Metazoen Biota in China
-
摘要: 通过对早期后生动物群产出层位的沉积特征、沉积层序和化石埋藏特征的研究，认为在海湾和局限海环境，早期后生动物群往往产于海侵体系中，而陆棚环境则保存在低水位体系；同时提出了两种早期后生动物群埋藏保存机理，一种是沉积事件（风暴流或浊流）破坏了生物生态环境，使生活在正常环境中的生物大量死亡，并被快速埋藏保存；另一种是海平面脉动引起环境变化，使早期后生动物死亡，在还原环境下埋藏保存。因此，认为海平面变化与早期后生动物群的埋藏保存有着密切关系。在提出两种早期后生动物群特异埋藏机理的基础上，并认为由前寒武纪至寒武纪，只要沉积环境、沉积序列类似，就有可能发现早期后生动物群，这对寻找新的早期后生动物群具有重要的指导意义。Abstract: The following results are obtained from the study of taphonomic characteristics fossil taphonomic sequence and sedimentary sequence of early metazoen biota discovered in China:(1)The emdedded and preserved condition is controlled by event layer(tempestite or turbidite)ard sedimentation rate takes main part in fossil embedition and preservation.(2)Close relationship preservation of the early metazoen biota between sea-level changes,this is,which always occur in transgressive system of shallow water bay and restricted sea, early metazoen biota occur in the shelf margin systems. Based on sedimentary evironments of the early metazoen biota.two buried models of the early metazoen biota are established Eventualy,it is indicated that new early metazoen biota may be discovered by above-mentioned condition which is benefit to preserve biota.
-
Key words:
- early metazoen biota /
- sedimentary evironment /
- taphonomy
-
[1] 1.陈均远;周桂琴;朱茂炎澄江动物群 1995
2.丁莲芳;李勇;胡夏嵩庙河动物群 1996
3.Chen Junyuan Precambrian metazoans of the Huai River drainage area (Anhui,E.China):their taphonomic and ecological evidence 1988
4.赵元龙;黄友庄;袁金良凯里化石库[期刊论文]-贵州地质 1996(02)
5.刘宝王君;许效松;潘杏南中国南方古大陆沉积地壳演化与成矿 1993
6.蒲心纯;周浩达;王熙林中国南方寒武纪岩相古地理与成矿作用 1993
7.张文堂澄江动物群及其中的三叶虫 1987
8.Hou X G;Remskold L;Bergstrom J Composition and preservation of the Chengjiang fauna-a Lower Cambrian soft-bodied biota 1991
9.Jin Yugan;Wang Huayu;Wang Wei Paleaoecological aspects of brachiopods from chiungchussu Fm.of Early Cambrian age,eastern Yunnan,China 1991
10.Chen Junyuan;Bergstrom J;Lindstrom M Fossilized soft-bodied fauna 1991(01)
11.张正华;沈建伟;赵元龙贵州台江中寒武世凯里动物群保存环境初探 1996(05)
12.黄友庄;王化羽;赵元龙贵州台江早、中寒武世凯里组的腕足动物 1994(03)
13.杨瑞东黔中、黔南三叠纪古生态、古群落研究 1996(06)
14.李凡;徐善民;姜秀珩南黄海海水中悬浮体跃层及底部浑水层 1991(05)
15.福迪B;罗迪安藻类学 1980
16.李儒峰;刘本培;赵澄林黔南Triticited带旋回层序碳同位素特征及冰川型海平面变化 1996(04) -
点击查看大图
计量
- 文章访问数: 623
- HTML全文浏览量: 19
- PDF下载量: 555
- 被引次数: 0
下载:
