苏北金湖凹陷北部垛二段——盐二段重矿物初步研究

doi:10.11743/ogg19810208

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苏北金湖凹陷北部垛二段——盐二段重矿物初步研究
A PRELIMINARY STUDY ON HEAVY MINERALS FROM SHANDO AND YANCHENG FORMATIONS IN NORTHERN JINHU SEG,NORTHERN JIANGSU
1981年2卷第2期页码：177-184
网络首发：1981-06-25，

纸质出版：1981
DOI： 10.11743/ogg19810208
稿件说明：

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苏北金湖凹陷北部垛二段——盐二段重矿物初步研究[J]. 石油与天然气地质, 1981,2(2):177-184. DOI： 10.11743/ogg19810208.

A PRELIMINARY STUDY ON HEAVY MINERALS FROM SHANDO AND YANCHENG FORMATIONS IN NORTHERN JINHU SEG,NORTHERN JIANGSU[J]. 1981, 2(2): 177-184. DOI： 10.11743/ogg19810208.

摘要

苏北金湖凹陷北部

包括三个次一级构造单元

即三河次凹陷、刘庄构造带和唐港构造带(图1)。该区处于东台坳陷与建湖隆起两大构造单元的过渡地带

新生代沉积变化较大

相变与地层缺失现象错综复杂。本文所研究的早第三纪晚期—晚第三纪沉积

即三垛组二段(简称“垛二段”)—盐城组二段(简称“盐二段”)尤其如此。

Abstract

The north section of Jinhu seg occurs in zone of transition between Dun-tai depression and Jianhu uplift.Cenozoic sediments vary greatly.Parts ofthese sediments show no distinct lithological and electrical properties.Analyses of 110 samples of heavy minerals are given and used as criter-ian for stratigraphical division and correlation on the basis of their as sembl-ages

typomorphic peculiarities and differences in distribution in various rockhorizons.