TECTONIC DEFORMATION OF FORELAND BASIN IN THE NORTHERN PART OF LOWER YANGTZE AREA
-
摘要: 下扬子北缘前陆盆地经历了印支、燕山、喜山等多期构造改造,构造环境经开裂扩张—碰撞拼合—拉伸断陷等多次转换,最终形成了上部拉伸、中部逆冲推覆、下部拆离滑脱的"三层楼阁"式分层构造变形组合的构造几何学模式.其构造变形主要受中三叠世扬子地块与华北地块的陆—陆碰撞造山作用控制,具有横向上强弱分带、垂向上形变分层的特征.可划分为伸展变形、冲断褶皱变形、拆离滑脱变形等3种构造变形样式.Abstract: Owing to the tectonic deformations during the Indosinian,Yanshan and Xishan epochs,the tectonic environment of foreland basin in the northern edge of lower Yangtze area changes from rift,collision matching to stretch rift,and ultimately results in a structural geometrical model of "3 tiers pavilion" with stretch in the top,thrust nappe in the middle and decoupling slip in the bottom.The tectonic deformation is mainly controlled by the collision orogenesis of Yangtze and North China platforms during the Middle Triassic with the characteristics of strong-weakness zoning horizontally and deformation layering vertically.The deformation style includes 3 types: stretching deformation,thrust fold deformation and decoupling slip deformation.
-
[1] 阎吉柱,俞凯,赵曙白等.下扬子区中生代前陆盆地[J].石油实验地质,1999,21(2):95～99 [2] 程日辉,王璞珺,刘万洙等.下扬子三叠纪最大海侵事件与扬子板块和华北板块碰撞的关系[J].海洋地质与第四纪地质,2004,24(2):55～59 [3] 吉让寿,高长林,秦德余.华北与扬子两板块拼贴方式与扬子北缘古生代盆地应变特征[J].石油实验地质,2004,26(2):143～152 [4] Decelles P G,Giles K A.Foreland basin system[J].Basin Research,1996,8(1):105～ 1234 [5] 王金渝,周荔青,郭念发等.苏浙皖石油天然气地质[M].北京:石油工业出版社,2000.1～23 [6] 陈沪生,张永鸿,徐师文等.下扬子及邻区岩石圈结构构造特征与油气资源评价[M].北京:地质出版社,1999.1～287 [7] 李道琪.苏北及下扬子区盆地分析[A].见:张渝昌编.中国含油气盆地原型分析[M].南京:南京大学出版社,1997.364～365 [8] 朱光,徐嘉炜,刘国生等.下扬子地区沿江前陆盆地形成的构造控制[J].地质论评,1998,44(2):120～129 [9] 朱光,徐嘉炜,刘国生等.下扬子地区前陆变形构造格局及其动力学机制[J].中国区域地质,1999,18(1):73～79 [10] 孙肇才,邱蕴玉,郭正吾.板内形变与晚期次生成藏--扬子区海相油气总体形成规律的探讨[J].石油实验地质,1991,13(2):107～142 [11] 陈冠宝,徐树桐,张渝昌等.皖南造山带的演化及在油田勘探中的意义[J].石油实验地质,1998,20(2):103～109 -
计量
- 文章访问数: 892
- HTML全文浏览量: 63
- PDF下载量: 364
- 被引次数: 0
下载:
苏公网安备32021102000780号