| 苏北下第三系阜宁群碳酸盐岩的基本特征 |
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| 引用本文： | 张国栋,王慧中,朱静昌,董荣鑫.苏北下第三系阜宁群碳酸盐岩的基本特征[J].地质科学,1983,0(2):134-142. |
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| 作者姓名： | 张国栋 王慧中 朱静昌 董荣鑫 |
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| 作者单位： | 同济大学 |
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| 摘 要： | 苏北下第三系阜宁群中的碳酸盐岩,据现有露头剖面和钻井揭露,主要分布于盆缘阜二、阜四段内(表1)。其中阜二段的碳酸盐岩层发育较好,由下而上大体可分三个亚段:下部主要由虫管-藻灰(云)岩、各种粒屑灰(云)岩、砂灰(云)岩夹粉砂岩组成;中部亦称“七尖峰”亚段,主要由薄层状、纸片状泥灰岩、泥晶灰岩组成;上部为灰、深灰色泥岩夹白云质泥晶灰岩组成。关于碳酸盐岩的基本特征,现依次讨论如下。
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| 关 键 词： | , |
| 收稿时间： | 1981-12-02 |
| 修稿时间： | 1981-12-02; |
BASIC FEATURE OF CARBONATE ROCKS OF THE LOWER TERTIARY FUNING GROUP,IN NORTH JIANGSU PLAIN |
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| Zhang Guodong,Wang Huizhong Zhu Jingchang,Dong Eongxin.BASIC FEATURE OF CARBONATE ROCKS OF THE LOWER TERTIARY FUNING GROUP,IN NORTH JIANGSU PLAIN[J].Chinese Journal of Geology,1983,0(2):134-142. |
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| Authors: | Zhang Guodong Wang Huizhong Zhu Jingchang Dong Eongxin |
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| Institution: | Tongji University, Shanghai |
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| Abstract: | The carbonate rocks of Lower Tertiary Funing Group in North Jiangsu Plain distributed mainly along the margin of the basin filled by middle and upper part of this group.Various lines of evidence taken both in the field and laboratory have shown that the environment of this carbonate rocks was transitional between sea and land,and was subject to dual-influence of saline and fresh water.There have been a wide variety of allochem to which the algal activity is closely related in origin.Various active diagenetic processes have taken place since buried,among which the percolation of fresh water had played an important role in enhancing the permeability and porosity of rocks.Three types of sedimentary models can be distinguished in this area,i.e.the offshore bank type,the steeper slope type and that of platform.There are narrow facies belts and abrupt facies variation which is obviously constrained by palaeotopographie relief existed in the time when they were formed. |
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| Keywords: | , |
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