| 峡东宜昌黄花场下奥陶统生物礁的研究 |
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| 引用本文： | 朱忠德.峡东宜昌黄花场下奥陶统生物礁的研究[J].地质科学,1993,28(1):1-9. |
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| 作者姓名： | 朱忠德 |
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| 作者单位： | 江汉石油学院地质系 湖北江陵 434102 |
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| 摘 要： | 首次发现峡东下奥陶统生物礁。造礁生物为攀苔藓虫、托盘藻、古钵海绵、蓝细菌和Pulchrilamina等。按造礁生物形成的格架类型有:粘结粒泥岩,藻粘结岩,攀苔藓虫障积岩,粘结障积岩等4种礁岩微相。这些微相在礁核中有、无和分布差异形成了灰泥岩隆礁,藻岩隆礁,攀苔藓虫障积岩隆礁和藻粘结-古钵海绵障积岩隆礁。各类礁都经历了奠基、发育、衰亡3个阶段。这一演化过程反映了沉积环境和水能量强度对礁发育的制约作用。
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| 关 键 词： | 长江三峡东部地区 障积岩隆礁 攀苔藓虫 造礁生物 奠基阶段 |
| 收稿时间： | 1992-04-01 |
| 修稿时间： | 1992-04-01; |
STUDY ON ORGANIC REEFS IN THE LOWER ORDOVICIAN IN HUANGHUACHANG OF THE EASTERN YANGTZE GORGE |
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| Zhu Zhongde.STUDY ON ORGANIC REEFS IN THE LOWER ORDOVICIAN IN HUANGHUACHANG OF THE EASTERN YANGTZE GORGE[J].Chinese Journal of Geology,1993,28(1):1-9. |
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| Authors: | Zhu Zhongde |
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| Institution: | Jianghan Petroleum Institute, Wangling 434102 |
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| Abstract: | The Lower Ordovician organic reefs were first identified in Huanghuachang of the eastern Yangtze Gorge by the authors. The reef-buildup organism are mainly Baostoma, Cala-thium, Archeoscyphia, Cyanobacieria and Pulchriamina etc. There are roughly four types of microfacies: bound wackestone, algae bindstont.Batostoma bafflestone and binding bafflestone according to the framework types formed by the reef-buildup organism. The existence, absence and distributive differences of these microfacies in reef core respectively formed limemud buildup reef, algae buildup reef, Batostoma baffling buildup reef and algae bind-Archaeos-cyphia baffling buildup reef. And each reef has urdergone foundation stage, development stage and decline stage. These processes of the evolution have reflected the control of sedimentary environments and the intensity of water energy on the devolopment of reefs. |
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| Keywords: | The Eastern Yantze Gorge Baffling buildup reef Batostoma Reef-bui-dup organism Foundation stage |
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