| 松嫩盆地扶余地区白垩系嫩江组岩石地层与沉积环境 |
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| 引用本文： | 段建祥,张财,李桂芝,刘学波.松嫩盆地扶余地区白垩系嫩江组岩石地层与沉积环境[J].吉林地质,2008,27(1). |
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| 作者姓名： | 段建祥 张财 李桂芝 刘学波 |
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| 作者单位： | 1. 吉林省地质调查院,吉林,长春,130061
2. 吉林省第二地质调查所,吉林,吉林市,132001 |
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| 摘 要： | 松嫩盆地白垩纪地层发育,其嫩江组沉积厚度大,呈盆地演化后期的沉积特征。本文从扶余地区嫩江组岩石组合、韵律变化、厚度及区域分布入手讨论其特点,对其影响因素(泥质、粉砂质、细砂质岩石)进行分析总结。根据岩石组合,该区嫩江组可划分成三段:下段黑色泥(页)岩—粉砂质泥岩互层;中段灰绿色粉砂质泥岩、泥质粉砂岩、细砂岩互层;上段杂色粉砂质泥岩互层。分析沉积岩石颜色、构造及韵律组合特征,推测嫩江组由下而上为半深湖—深湖—半深湖(浅湖)相交替变化—滨湖(湖滩)相演化过程。
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| 关 键 词： | 白垩系嫩江组 岩石地层 沉积环境 松嫩盆地 |
Stratigraphy and depositional environment of Cretaceous Nenjiang Formation in Fuyu region,Songnen Basin |
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| DUAN Jian-xiang,ZHANG Cai,LI Gui-zhi,LIU Xue-bo.Stratigraphy and depositional environment of Cretaceous Nenjiang Formation in Fuyu region,Songnen Basin[J].Jilin Geology,2008,27(1). |
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| Authors: | DUAN Jian-xiang ZHANG Cai LI Gui-zhi LIU Xue-bo |
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| Institution: | DUAN Jian-xiang1,ZHANG Cai1,LI Gui-zhi1,LIU Xue-bo21.Institute of Geologic Survey of Jilin Province,Changchun 130061,Jilin,China,2.The Second Geologic Survey of Jilin Province,Jilin,130001,Jilin,China |
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| Abstract: | Cretaceous strata are development within Songnen Basin,Nenjiang Formation in the Cretaceous strata is thicker,it exhibits the depositional characteristics of the later period of basinal evolution.Its characteristics are discussed from the rock assemblage,rhyme change,thick and regional distribution,effect factors(argillaceous,silt and fine sand rock)are analyzed and summarized.On the basis of the rock assemblage,Nenjiang Formation can be divided into three members,alternate layer of the black mudrock(shale)and silt mudrock in the lower member,alternate layer of the gray-green silt mudrock,argillaceous siltite and fine sand in the middle member and alternate layer of the motley silt mudrock in the upper member.After the synthetical characteristics of the rock are analysed,the evolution process of Nenjiang Formation is deduced from bottom to top,i.e.,alternation change of semi-deep lake,deep lake and semi-deep lake(shallow lake)facies,shore lake(beach lake)facies in the last. |
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| Keywords: | Cretaceous Nenjiang Formation rock stratum depositional environment Songnen Basin |
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