宿迁—绍兴区域剖面构造特征与动力学机制
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摘要
下扬子区油气资源丰富,但由于地质构造极为复杂,几年来的勘探未取得大的突破,尤其是中、古生界勘探程度相对较低。因此,研究这一地区的构造特征,对进一步明确勘探方向、发现有利构造区有着重要的意义。
本文进行大量中、英文文献查阅,紧追踪科学前沿和下扬子区最新研究成果。以NG-13、GR52.2两条地震测线为主,结合钻井资料、重磁电资料、野外地质露头资料等,对宿迁—绍兴区域剖面进行了精细的构造解释,并以此大剖面为切入点对下扬子区构造特征、主要断裂特征、构造演化及动力学机制、典型构造样式等进行了详细研究。
区域综合解释剖面显示,下扬子区中、古生界大致以南京-镇江对冲带为界呈南北挤压对冲构造格局,南北两套逆冲推覆系统可划分为根带、中带、锋带,根带构造变形强度最大,发育一系列高角度逆冲断层;锋带次之,发育对冲构造;中带最小,主要发育大型宽缓褶皱。研究认为,对冲的动力来源主要为加里东中期-海西早期,扬子板块与华夏古陆沿江山-绍兴一线发生俯冲、碰撞及印支-燕山期扬子板块沿苏北-胶南一线向华北板块发生俯冲、碰撞。下扬子区中、新生界构造格局主要受控于太平洋板块向东亚板块俯冲方向的改变及印度板块的挤压作用。
本文还对大剖面上及下扬子区存在的典型构造样式进行了认真分析,可划分为挤压构造样式、伸展构造样式、反转构造样式等三种类型。
The oil exploration of Lower Yangtze region with rich oil and gases has not been making a greater breakthrough because of its complicated geological structure in recent years, especially in Mesozoic and Paleozoic exploration. Therefore, it is significant to study on the structural characteristics of this region in order to further clarify the exploration and discovery favorable structural areas.
This thesis accessed to a large number of documents and tight tracks scientific frontier and the latest research results of Lower Yangtze region. In addition,it got the fine structure interpretation which is regarded as the point of penetration on the structural characteristics, the main fracture characteristics, structural evolution and dynamic mechanism and typical tectonic styles of the Lower Yangtze area on the Suqian - Shaoxing regional section by studying the NG-13 and GR52.2 seismic lines and being combined with the drilling and gravity magnetic data, field geological outcrop information, etc..
Regional integrated interpretation section shows that in Lower Yangtze region, Mesozoic and Paleozoic with Nanjing-Zhenjiang hedge as the boundary is north-south tectonic compression pattern. Two thrust systems of north-south can be divided into the root zone which has the highest intensity of structural deformation and develops a series of high angle thrust fault, the middle zone that, with the minimum deformation, mainly develops large-relief folds and the frontal zone which develops hedge structure. The study suggests that the dynamic power source mainly comes from the subduction and collision between Yangtze plate and Cathaysia along Jiangshan-Shaoxing fault and also the subduction and collision along Indo-China and Yanshanian Yangtze plate to the Jiangsu-Jiaonan line. The Mesozoic and Cenozoic Structural framework of Lower Yangtze region is mainly controlled by the change of direction for the subduction between Pacific plate and East Asia and the extrusion from Indian plate.
This thesis also analysises the typical ectonic styles which can mainly be divided into 3 styles including compressional tectonic style, extensional tectonic style and inversion tectonic style in Suqian - Shaoxing regional section.
本文进行大量中、英文文献查阅,紧追踪科学前沿和下扬子区最新研究成果。以NG-13、GR52.2两条地震测线为主,结合钻井资料、重磁电资料、野外地质露头资料等,对宿迁—绍兴区域剖面进行了精细的构造解释,并以此大剖面为切入点对下扬子区构造特征、主要断裂特征、构造演化及动力学机制、典型构造样式等进行了详细研究。
区域综合解释剖面显示,下扬子区中、古生界大致以南京-镇江对冲带为界呈南北挤压对冲构造格局,南北两套逆冲推覆系统可划分为根带、中带、锋带,根带构造变形强度最大,发育一系列高角度逆冲断层;锋带次之,发育对冲构造;中带最小,主要发育大型宽缓褶皱。研究认为,对冲的动力来源主要为加里东中期-海西早期,扬子板块与华夏古陆沿江山-绍兴一线发生俯冲、碰撞及印支-燕山期扬子板块沿苏北-胶南一线向华北板块发生俯冲、碰撞。下扬子区中、新生界构造格局主要受控于太平洋板块向东亚板块俯冲方向的改变及印度板块的挤压作用。
本文还对大剖面上及下扬子区存在的典型构造样式进行了认真分析,可划分为挤压构造样式、伸展构造样式、反转构造样式等三种类型。
The oil exploration of Lower Yangtze region with rich oil and gases has not been making a greater breakthrough because of its complicated geological structure in recent years, especially in Mesozoic and Paleozoic exploration. Therefore, it is significant to study on the structural characteristics of this region in order to further clarify the exploration and discovery favorable structural areas.
This thesis accessed to a large number of documents and tight tracks scientific frontier and the latest research results of Lower Yangtze region. In addition,it got the fine structure interpretation which is regarded as the point of penetration on the structural characteristics, the main fracture characteristics, structural evolution and dynamic mechanism and typical tectonic styles of the Lower Yangtze area on the Suqian - Shaoxing regional section by studying the NG-13 and GR52.2 seismic lines and being combined with the drilling and gravity magnetic data, field geological outcrop information, etc..
Regional integrated interpretation section shows that in Lower Yangtze region, Mesozoic and Paleozoic with Nanjing-Zhenjiang hedge as the boundary is north-south tectonic compression pattern. Two thrust systems of north-south can be divided into the root zone which has the highest intensity of structural deformation and develops a series of high angle thrust fault, the middle zone that, with the minimum deformation, mainly develops large-relief folds and the frontal zone which develops hedge structure. The study suggests that the dynamic power source mainly comes from the subduction and collision between Yangtze plate and Cathaysia along Jiangshan-Shaoxing fault and also the subduction and collision along Indo-China and Yanshanian Yangtze plate to the Jiangsu-Jiaonan line. The Mesozoic and Cenozoic Structural framework of Lower Yangtze region is mainly controlled by the change of direction for the subduction between Pacific plate and East Asia and the extrusion from Indian plate.
This thesis also analysises the typical ectonic styles which can mainly be divided into 3 styles including compressional tectonic style, extensional tectonic style and inversion tectonic style in Suqian - Shaoxing regional section.
引文
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[2]杨琦,陈红宇.苏北-南黄海盆地构造演化[J].石油试验地质,2003,25(增刊):562-565
[3]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
[4]裴振洪,王果寿.苏北-南黄海海相中古生界构造变形类型划分[J].天然气工业,2003,23(6):32-36
[5]佘晓宇,徐宏节,何治亮.江苏下扬子区中、古生界构造特征及其演化[J].石油与天然气地质,2004,25(2):226-236
[6]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
[7]杨琦,陈红宇.苏北-南黄海盆地构造演化[J].石油实验地质,2003,25(增刊):562-565
[8]邱海峻,许志琴,乔德武.苏北盆地构造演化研究进展[J].地质通报,2006,25(9-10):1117-1120
[9]王伟锋,陆诗阔,金强.中国大陆东部盆地构造动力学分析[J].石油大学学报(自然科学版),1999,23(4):1-5
[10]杨克绳.中国东部主要盆地断坳结构形成机理的探讨[J].断块油气田,1998,6(1):1-8
[11]练铭祥,薛冰,杨盛良.苏北新生代盆地断陷和坳陷的形成机理[J].石油实验地质,2001,23(3):256-260
[12]陈安定.苏北箕状断陷形成的动力学机制[J].高校地质学报,2001,7(4):408-417
[13]朱夏.论中国含油气盆地构造[M].北京:石油工业出版社,1986:80-93
[14]朱夏.中国中新生代沉积盆地[M].北京:石油工业出版社,1990:111-126
[15]姜月华,业治铮.江苏及邻区中生代含油气盆地的类型、沉积特征和地球动力学背景[J].火山地质与矿产,1999,20(1):1-12
[16]王巍,陈高,王家林,等.苏北南黄海盆地区域构造特征分析[J].地震学刊,1999.(1):47-55
[17]吴根耀,马力,陈焕疆,等.苏皖地块构造演化、苏鲁造山带形成及其耦合的盆地发育[J].大地构造与成矿学,2003,(04):337-353
[18] Harding T P, Lowell J D. Structural styles, their plate tectonic habitats and hydrocarbon traps in petroleum provinces. Bull[J]. AAPG. 1979,63:1016-1058
[19] Lowell J D. Structural Styles in Petroleum Exploration[M]. 1985:1-43
[20]梁积伟,解东宁.华北盆地南部构造样式分析[J].石油实验地质,2006,28(5):414-423
[21]廖昌珍,张岳桥,温长顺.鄂尔多斯盆地东缘边界带构造样式及其区域构造意义[J].地质学报,2007,81(4):466-474
[22]丁丽荣,柳忠泉,雷敏,等.合肥盆地演化及构造样式[J].石油实验地质,2002,24(3):204-208
[23]戴俊生,曹代勇.柴达木盆地新生代构造样式的演化特点[J].地质论评,2000,46(5):455-460
[24]刘和甫.沉积盆地地球动力学分类及构造样式分析[J].地球科学—中国地质大学学报,1993,18(6):699-724
[25]田在艺,张庆春.中国含油气盆地论[M].北京:石油工业出版社,1996:249-250
[26]沈华,刘俊,刘建党.贝尔凹陷褶皱构造样式及成因分析[J].中国矿业,2005,14(3):79-82
[27]陈海云,于建国,舒良树等.济阳坳陷构造样式及其与油气关系[J].高校地质学报,2005,11(4):622-632
[28]陆克政,漆家福.渤海湾盆地新生代含油气盆地构造模式[M].北京:地质出版社,1997:92-122
[29]姚永坚,冯志强,王嘹亮,等.南黄海构造样式的特征及含油气性[J].海洋地质动态,2002,18(11)∶30-32
[30]林舸,王岳军,李自安.盆地基本构造样式与天然气成藏[J].大地构造与成矿学,1999,23(3):197-204
[31]陈沪生,张永鸿.下扬子及邻区岩石圈结构构造特征与油气资源评价[M].地质出版社,1999:1-5
[32]王金渝,周荔青,郭念发.苏浙皖石油天然气地质[M].石油工业出版社,2000:1-125
[33]陈沪生.下扬子地区HQ-13线的综合物理调查及其地质意义[J].石油天然气地质,1988,9(3):28-35
[34]刘彦,孟小红,胡金民,等,断层识别技术及其在MB油气田的应用[J].地球物理学进展,2008,28(2):515-521
[35]戴俊生.构造地质学及大地构造[M].石油工业出版社,2006:364-365
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