| 中扬子地区中二叠统沉积及古地理特征 |
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| 引用本文： | 万秋,李双应,陈静静.中扬子地区中二叠统沉积及古地理特征[J].地质学报,2011,85(6):993-1007. |
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| 作者姓名： | 万秋 李双应 陈静静 |
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| 作者单位： | 合肥工业大学资源与环境工程学院,合肥,230009;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（面上项目，重点项目，重大项目） |
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| 摘 要： | 中扬子地区中二叠世为广海盆地,地层总体南厚北薄,岩相呈渐变关系,从南到北由浅海相的灰岩向半深海及深海相的硅质灰岩、硅质岩转变,沉积水体南浅北深.从微相分析的角度证明了在研究区中二叠统广泛发育的砾屑灰岩为异地沉积成因,而非差异压实成因.栖霞期研究区遭受广泛海侵,中扬子北缘为外缓坡-盆地沉积,中扬子克拉通主体为缓坡沉积,局...
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| 关 键 词： | 中扬子地区 缓坡沉积 沉积演化 古地理 |
| 收稿时间： | 10/8/2010 1:05:44 PM |
| 修稿时间： | 1/4/2011 10:15:41 AM |
Sedimentary and Palaeogeography Characteristics in the middle Permian of middle Yangtze area |
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| wanqiu,Li Shuangying and chenjingjing.Sedimentary and Palaeogeography Characteristics in the middle Permian of middle Yangtze area[J].Acta Geologica Sinica,2011,85(6):993-1007. |
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| Authors: | wanqiu Li Shuangying and chenjingjing |
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| Institution: | Hefei University of Technology,Hefei University of Technology,Geological Survey of Anhui Province |
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| Abstract: | The middle Yangtze area was an epicontinental basin in Middle Permian.Based on stratigraphic,lithofacies and sedimentary facies analysis,the Middle Permian series was thick in south and thin in north,gradually thinning from south to north.The lithofacies changed from shallow marine limestone to the bathyal and deep-sea siliceous limestone,siliceous rock from south to north;the sedimentary water gradually became deeper from south to north.Microfacies analysis shows that widely developed calcirudite in the st... |
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| Keywords: | middle Yangtze area ramp sedimentary evolution Palaeogeography |
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