| 山东平邑盆地古近系湖相核形石的沉积环境分析 |
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| 引用本文： | 唐鑫萍,黄文辉,邓宏文,张矿明,柳佳期,穆娜娜.山东平邑盆地古近系湖相核形石的沉积环境分析[J].现代地质,2011,25(3). |
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| 作者姓名： | 唐鑫萍 黄文辉 邓宏文 张矿明 柳佳期 穆娜娜 |
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| 作者单位： | 中国地质大学海相储层演化与油气富集机理教育部重点实验室,北京,100083;中国地质大学能源学院,北京,100083 |
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| 基金项目： | 国家科技重大专项，长江学者和创新团队发展计划项目 |
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| 摘 要： | 山东省平邑盆地古近系官庄组湖相碳酸盐岩露头发育有大量的核形石。为分析其沉积环境,采用野外观测、地球化学测试、偏光显微镜和扫描电镜观察等方法,研究其岩性背景、伴生的生物、沉积构造以及元素地球化学特征。研究表明,核形石主要发育于浅水、中等偏低能量的环境。有少量陆源碎屑物的环境有利于核形石生长;但较多的陆源碎屑物则对其不利。将核形石分为3类:规则泥晶纹层核形石(简称A类核形石),具有大颗粒、多层的规则纹层、复合核心等特点,可以指示浅水、中能、低陆源环境;规则微亮晶纹层核形石(B类),以色浅、粒径小、分选好、微亮晶纹层为特点,可指示浅水、较高能环境;不规则泥晶纹层核形石(C类),以色深、外形不规整、凝块状不规则纹层为特征,指示较深水、低能环境。发育A类和C类核形石的岩石,孔隙发育较差;发育B类核形石的岩石,孔隙发育较好,表现出相对较好的储层潜力。
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| 关 键 词： | 平邑盆地 古近系 湖相灰岩 核形石 沉积环境 |
Sedimentary Environment of Paleogene Lacustrine Oncoids in Pingyi Basin,Shandong Province |
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| TANG Xin-ping,HUANG Wen-hui,DENG Hong-wen,ZHANG Kuang-ming,LIU Jia-qi,MU Na-na.Sedimentary Environment of Paleogene Lacustrine Oncoids in Pingyi Basin,Shandong Province[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(3). |
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| Authors: | TANG Xin-ping HUANG Wen-hui DENG Hong-wen ZHANG Kuang-ming LIU Jia-qi MU Na-na |
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| Institution: | TANG Xin-ping1,2,HUANG Wen-hui1,DENG Hong-wen1,ZHANG Kuang-ming1,LIU Jia-qi1,MU Na-na1,2(1.Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism,Education Ministry,China University of Geosciences,Beijing 100083,China,2.School of Energy Resources,China) |
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| Abstract: | There are a great many oncoids in the limestone of Pingyi basin.By means of field inspection and microscope observations,the host rocks as well as associated fossils and sedimentary structures were investigated.Some of the chemical compositions were also measured to discuss the environmental features.Oncoids were found intensively distributed in the environment which was characterized by shallow water,medium or medium-low energy.Slight amount terrigenous influx was discovered to contribute to the growth of ... |
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| Keywords: | Pingyi basin Paleogene lacustrine limestone oncoid sedimentary environment |
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