南黄海盆地北凹多幕正反转构造特征及其动力学分析

现代地质 ›› 2017, Vol. 31 ›› Issue (03): 443-449.

南黄海盆地北凹多幕正反转构造特征及其动力学分析

祁鹏(), 王鹏, 崔敏, 蔡佳

中海油研究总院,北京 100028

收稿日期:2016-08-14 修回日期:2016-12-20 出版日期:2017-06-10 发布日期:2017-06-27
作者简介:祁鹏,男,工程师,1983年出生,能源地质工程专业,主要从事盆地分析及石油地质综合研究工作。Email: qipeng.1983@163.com。
基金资助:
国家科技重大专项“中国近海富烃凹陷优选与有利勘探方向预测”(2016ZX05024-002)

Tectonic Characteristics and Dynamical Analysis of Episodic Positive Inversion in the North Sag of South Yellow Sea Basin

QI Peng(), WANG Peng, CUI Min, CAI Jia

CNOOC Research Center, Beijing 100028, China

Received:2016-08-14 Revised:2016-12-20 Online:2017-06-10 Published:2017-06-27

摘要/Abstract

摘要：

利用重处理的二维地震测线对南黄海盆地北凹进行了精细的构造解释,揭示了三种不同类型的正反转构造样式,分别是中南部的逆冲型、东部的压扭型和北部的褶皱型,主要受控于其所处的不同构造位置。通过典型地震测线的平衡剖面分析,并结合区域构造动力学背景分析,认为北凹至少发生了三幕构造正反转,主要受控于不同地质时期太平洋板块对欧亚大陆俯冲速度和角度的改变。其中,三垛组沉积之后,太平洋板块俯冲角度逐步由北西向转为南西西向,并且俯冲速度明显增大,使得北凹处于北东南西向挤压环境中,广泛发育正反转构造,这也是最强烈的一幕正反转,表现为强烈的逆断层活动和地层剥蚀。过度的正反转作用可能对北凹油气藏的形成造成了不利的影响。

关键词: 正反转构造, 构造样式, 构造演化, 南黄海盆地

Abstract:

Three types of positive inversion structures are found in the North Sag of South Yellow Sea Basin with interpretation of reprocessed 2D seismic data. They are classified into three types: the reversed fault type in the central and southern part, the transpressional type in the eastern part and the compressional fold type in the northern part. Where the inversion structures located was depended on the different tectonic positions. Based on the integrated analysis of balance sections of the typical seismic profiles and the regional tectonic background, it was considered that three episodic positive inversions had happened in the North Sag at least, which were influenced by the change of the subduction angle and rate from the Pacific plate to the Eurasian continent during the Cenozoic period. After the Sanduo Formation deposited, the subduction direction of the Pacific plate changed from NW to SWW and the subduction rate increased twice nearly. This change caused the most intensely positive inversion episode of the North Sag because of the SWW compressional force from the Pacific plate, which presented the strongest reversely faulting and erosion. Meanwhile, the excessively positive inversion may not be good for the hydrocarbon accumulation in the North Sag.

Key words: positive inversion, structure style, tectonic evolution, south Yellow Sea Basin

中图分类号:

P548
TE121.2

祁鹏, 王鹏, 崔敏, 蔡佳. 南黄海盆地北凹多幕正反转构造特征及其动力学分析[J]. 现代地质, 2017, 31(03): 443-449.

QI Peng, WANG Peng, CUI Min, CAI Jia. Tectonic Characteristics and Dynamical Analysis of Episodic Positive Inversion in the North Sag of South Yellow Sea Basin[J]. Geoscience, 2017, 31(03): 443-449.

图/表 5

图1 南黄海盆地北凹构造纲要及凹陷结构图

Fig.1 Structure outline map and texture diagram of the North Sag in south Yellow Sea Basin

图2 北凹中南部的逆冲型正反转构造

Fig.2 Reversed fault type of the positive inversion structure in the central and southern part of the North Sag

图3 北凹压扭型正反转构造

Fig.3 Transpressional type of the positive inversion structure in the eastern part of the North Sag

图4 北凹褶皱型正反转构造

Fig.4 Compressional fold type of the positive inversion structure in the northern part of the North Sag

图5 北凹中生代末期以来的构造演化过程

Fig.5 Tectonic evolution of the North Sag since Late Mesozoic

参考文献 16

[1]	GLENNIE K W, BOEGER P L. Sole pit inversion tectonics[M]// ILLING L V, HOBSON G D. Petroleum Geology of the Continental Shelf of Northwest Europe, Proceedings of the Second Conference. London: Heyden on Behalf of the Institute of Petroleum, 1981: 110-120.
[2]	WILLIAMS G D, POWELL C M, COOPER M A. Geometry and kinematics of inversion tectonics[M]// COOPER M A, WILLIAMS G D. Inversion Tectonics. London: Geological Society Special Publication, 1989, 44: 3-15.
[3]	MITRA S. Geometry and kinematic evolution of inversion structures[J]. AAPG Bulletin, 1993, 77(7): 1159-1191.
[4]	王燮培, 严俊君, 林军. 反转构造及其石油地质意义[J]. 地球科学, 1989, 14(1): 101-108.
[5]	周祖翼. 反转构造[J]. 地质科技情报, 1994, 13(1): 3-11.
[6]	李本亮, 魏国齐, 贾承造, 等. 中国前陆盆地构造地质基本特征及其控制下的油气分布[J]. 现代地质, 2009, 23(4): 575-586.
[7]	杨勇, 汤良杰, 漆立新, 等. 塔里木盆地塔中—巴楚地区反转构造及其石油地质意义[J]. 现代地质, 2014, 28(3): 559-565.
[8]	郭真, 刘池洋, 田建锋. 东海盆地西湖凹陷反转构造特征及其形成的动力环境[J]. 地学前缘, 2015, 22(3): 59-67. DOI
[9]	曹冰. 西湖凹陷中央反转构造带花港组致密砂岩储层埋藏史-热史[J]. 成都理工大学学报(自然科学版), 2016, 43(4): 405-414.
[10]	侯方辉, 张志珣, 张训华, 等. 南黄海盆地地质演化及构造样式地震解释[J]. 海洋地质与第四纪地质, 2008, 28(5): 61-68.
[11]	李楠, 李巍然, 龙海燕. 南黄海盆地北部坳陷正反转构造[J]. 海洋地质与第四纪地质, 2013, 33(3): 95-100.
[12]	郭飞飞, 曹强, 唐文旭. 南黄海北部盆地东北凹陷地层剥蚀厚度恢复[J]. 海洋地质与第四纪地质, 2009, 29(5): 99-105.
[13]	袭著纲, 王鹏. 南黄海盆地南部坳陷南五凹三垛组剥蚀量研究[J]. 地质学刊, 2014, 38(4): 536-541.
[14]	李运振, 邓运华, 徐强, 等. 板块运动对中国近海新生代盆地沉降及充填的控制作用[J]. 现代地质, 2010, 27(4): 719-726.
[15]	江国明, 张贵宾, 徐峣. 中国东北地区太平洋板块精细俯冲特征[J]. 现代地质, 2012, 26(6):1125 -1135.
[16]	NORTHRUP C J, ROYDEN L H, BURCHFIEL B C. Motion of the Pacific plate relative to Eurasia and its potential relation to Cenozoic extension along the eastern margin of Eurasia[J]. Geology, 1995, 23(8): 719-722. DOI URL