| 七星街地区下二叠统栖霞组的微相特征及沉积模式 |
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| 引用本文： | 杨孟达.七星街地区下二叠统栖霞组的微相特征及沉积模式[J].湖南科技大学学报(自然科学版),1989(2). |
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| 作者姓名： | 杨孟达 |
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| 作者单位： | 湘潭矿业学院地质系 |
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| 摘 要： | 研究地区栖霞组剖面厚约115米,除少量陆源碎屑岩外,以碳酸盐岩沉积为主,包括亮晶砂屑灰岩、核形石灰岩、生物碎屑灰岩、泥晶灰岩、白云岩等。岩石学和古生态学特征表明该区栖霞组可划为潮上云坪、湖间、潮沟、潮滩、开阔浅海、深浅海等沉积微相。据此建立起栖霞组的垂直相序和沉积模式。
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| 关 键 词： | 栖霞组 微相分析 沉积模式 |
MICROFACIES ANALYSIS AND SEDIMENTARY MODEL OF LOWER PERMIAN QIXIA FORMATION IN LIANYAN QINXIGJIE |
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| Yan Mengda.MICROFACIES ANALYSIS AND SEDIMENTARY MODEL OF LOWER PERMIAN QIXIA FORMATION IN LIANYAN QINXIGJIE[J].Journal of Hunan University of Science & Technology(Natural Science Editon),1989(2). |
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| Authors: | Yan Mengda |
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| Institution: | Dept.of Geology |
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| Abstract: | In outcroped stracta of the studied area there is few terrigenous clastic rocks, carbonate rocks occupy, mostly. The carbonate rocks mainly consist of sparry arenitic limestone, oncolite limestone, bioclastic limestone, micrite, dolostone etc.Petrological and paleoecological characteristics and other evidences indicating sedimentary microfacies of Qixia Formation are as follows: (1) supratidal doloflat face, (2) intertidal mudflat face, (3) tidal ditch face, (4)tidal bank face, (5) open shallow sea face, (6) restricted shallowsea face.Sedimentary facies sequence and sedimentary model of Qixia Formation in studied, area were established on the basis of microfacies analysis. Sedimentary model suggests that the studied area is epicontinental sea with cleare water. |
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| Keywords: | Qixia Formation microfacies analysis sedimentary model |
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