| 四川广元中二叠统栖霞组似球粒灰岩微相特征及沉积学意义 |
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| 引用本文： | 马志鑫,李波,颜佳新,薛武强.四川广元中二叠统栖霞组似球粒灰岩微相特征及沉积学意义[J].沉积学报,2011,29(3):449-457. |
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| 作者姓名： | 马志鑫 李波 颜佳新 薛武强 |
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| 作者单位： | 中国地质大学生物地质与环境地质教育部重点实验室 武汉 430074 |
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| 基金项目： | 国家自然科学基金项目(批准号:41072078)资助 |
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| 摘 要： | 四川广元上寺中二叠统栖霞组中段发育碳酸盐岩浅滩相.露头观察、镜下分析得出,其颗粒类型中,似球粒、包粒十分丰富,占较大比重.研究层段识别出粪球粒、巴哈马似球粒、微生物似球粒三种类型.其中以巴哈马似球粒最为常见,它是由生物碎屑的泥晶化导致的.基于颗粒类型、沉积组构的详细观察和微相分析,得出研究层段总体沉积环境为似球粒为主的...
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| 关 键 词： | 似球粒 沉积环境 广元 栖霞组 |
| 收稿时间： | 1900-01-01 |
Microfacies of Peloidal Limestone of Middle Permian Chihsia Formation at Guangyuan,Sichuan Province and Its Sedimentary Significance |
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| MA Zhi-xin,LI Bo,YAN Jia-xin,XUE Wu-qiang.Microfacies of Peloidal Limestone of Middle Permian Chihsia Formation at Guangyuan,Sichuan Province and Its Sedimentary Significance[J].Acta Sedimentologica Sinica,2011,29(3):449-457. |
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| Authors: | MA Zhi-xin LI Bo YAN Jia-xin XUE Wu-qiang |
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| Institution: | .Key Laboratory of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan 430074 |
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| Abstract: | Carbonate shoal develops in the middle part of Chihsia Formation at Shangsi Section of Guangyuan,Sichuan Province.The outcrop consists predominantly of thick bedded to massive limestone with intercalated dolostone.The rocks are light grey and crystalline,with some fossil fragments.Under microscope,abundant peloids and cortoids were identified.The peloids are classified into three types: fecal pellets,bahamite peloids and microbial peloids.The bahamite peloids are the most common grains observed.They are mic... |
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| Keywords: | peloid depositional environment Guangyuan Chihsia Formation |
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