| 中国南方二叠纪钙质海绵的基本特征、分布与古生态 |
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| 引用本文： | 张雄,张孝林.中国南方二叠纪钙质海绵的基本特征、分布与古生态[J].地质科学,1992,0(1):10-19. |
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| 作者姓名： | 张雄 张孝林 |
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| 作者单位： | 1. 中国科学院地质研究所;2. 云南石油地质科研所 |
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| 摘 要： | 本文讨论了钙质海绵化石主要类别的基本特征,归纳了它们在中国南方二叠纪生物礁中的分布,对于不同地区的钙质海绵动物群进行了综合分析,并在此基础上开展了古生态讨论,初步揭示了钙质海绵在生物礁形成中的作用及其与礁体发育、消亡的相互关系。
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| 关 键 词： | 钙质海绵 古生态 生物礁 二叠纪 中国南方 |
| 收稿时间： | 1989-09-01 |
| 修稿时间： | 1989-09-01; |
CHARACTERISTICS,DISTRIBUTION AND PALEOECOLOGY OF PERMIAN CALCISPONGES IN SOUTH CHINA |
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| Zhang Wei.CHARACTERISTICS,DISTRIBUTION AND PALEOECOLOGY OF PERMIAN CALCISPONGES IN SOUTH CHINA[J].Chinese Journal of Geology,1992,0(1):10-19. |
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| Authors: | Zhang Wei |
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| Institution: | 1. Institute of Geology, Academia Sinica, Beijing;2. Yunnan Institute of Petroleum Geology, Kunming |
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| Abstract: | Permian reefs in South China contain the most extensive and various calcisponges known. Three sponges,included sphinctozoans,inozoans and sclerosponges (tabulozoans),appear as frame-builders and binding organisms in Middle to Late Permian reefs. The calcisponges found in Middle Permian reefs (Maokou Formation with Neoschwagerina and Yabeina zones) in Yunnan and Guangxi provinces,South China,have a strong resemblance to those in Djebel Tebaga reefs in Tunisia,North Africa.Some of genera uch as Tebagathalamia,Amblysiphonella,Colospongia and Cystothalamia are quite common in reefs of both places.The Tunisian reefs were formed in the early stage of Late Permian,relatively later than the reefs in Yunnan and Guangxi provinces,South China,but the calcisponge faunas show a similarity in features and a continuity in their evolution. Reef-builing sponges represented by an association of Amblysiphonella-Polycystocoelia, composed of forty-five species of 23 genera belonging to Sphinctozoa,Inozoa and Tabulozoa, are found in Late Permian reefs (Changxing Formation with Palaeofusulina zone) in Lichuan, Hubei province,as well as in other regions,South China.The association,at present,is one of the most important reef-building sponge faunas and is also one of the upper most Permian faunas in the world. The sphinctozoa appeared as frame-building organisms are cylindrical form and crowded together.In quiet water,they have thinuer walls and rare filling structures in chambers, but in turbulent water,they have thicker walls and dense and varied filling structures in the chambers.The calcisponges in reefs as binding organisms are usually bodies of glomerate chambers,or flat and tabular bodies with numerous chambers.They are always short and small in form.This shows a strong adaptability of calcisponges lived in a higher energy water environment. The binding organisms play an important role in developing reefs.They are so abundant that can be almost found in all typical reefs in different places of China.Some ecological evidence suggests that most of frame-building calcisponges can not build up a reef without existance of the binding calcareous algae. |
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| Keywords: | Calcisponges Paleoecology Reefs Permian South China |
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