中、上扬子地区地质结构类型与海相层系油气保存意义
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摘要
在前人研究的基础上,综合野外构造剖面、地震-地质解释、钻井资料等,总结出中、上扬子地区发育单层、双层和三层结构等3大类共计11小类的地质结构类型,分5个区带剖析了区内褶皱-冲断带的构造分带性与地质结构类型的展布特征,并简要讨论了不同地质结构的成因,认为地质结构类型差异与变形带内主控断层所滑脱的深度密切相关。不同的滑脱深度决定了该地质结构类型中区域盖层的剥蚀程度及断层对油气保存的性质,从而决定了其油气保存条件。其中,单层稳定结构、双层结构的深部构造、三层结构的中部构造因区域盖层保存完好、主控断层多为烃源断层而具有良好的保存条件,是油气勘探的有利构造带。
Three types (i.e.single-,double-,and three-layer structures) and eleven sub-types of geologic configurations are recognized in the middle-upper Yangtze region based on the previous study and combining field tectonic profiles,seismic-geological interpretations,and drilling data.The structural zonation of the fold-thrust belts and the distribution of these geological configuration types in the study area are expounded in terms of five structural provinces and the genesis of these configuration types is briefly discussed. The differences among these geologic configuration types are closely related to the detaching depths of the major faults within deforming zones,and the latter determines the erosion of regional cap rocks and the role of faults in hydrocarbon preservation for this type of geologic configuration.Among these geologic configuration types,the stable single-layer configuration,the deep structure in the double-layer configuration and the middle structure in the three-layer configuration have excellent preservation conditions,and therefore are potential exploration targets.
Three types (i.e.single-,double-,and three-layer structures) and eleven sub-types of geologic configurations are recognized in the middle-upper Yangtze region based on the previous study and combining field tectonic profiles,seismic-geological interpretations,and drilling data.The structural zonation of the fold-thrust belts and the distribution of these geological configuration types in the study area are expounded in terms of five structural provinces and the genesis of these configuration types is briefly discussed. The differences among these geologic configuration types are closely related to the detaching depths of the major faults within deforming zones,and the latter determines the erosion of regional cap rocks and the role of faults in hydrocarbon preservation for this type of geologic configuration.Among these geologic configuration types,the stable single-layer configuration,the deep structure in the double-layer configuration and the middle structure in the three-layer configuration have excellent preservation conditions,and therefore are potential exploration targets.
引文
1李大成,赵宗举,徐云俊.中国海相地层油气成藏条件与有利勘探领域分析[J].中国石油勘探,2004,9(5):3～11,52
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3肖开华,沃玉进,周雁,等.中国南方海相层系油气成藏特点与勘探方向[J].石油与天然气地质,2006,27(3):316～325
4沃玉进,肖开华,周雁,等.中国南方海相层系油气成藏组合类型与勘探前景[J].石油与天然气地质,2006,27(1):11～16
5王根海,赵宗举,李大成,等.中国南方海相油气地质及勘探前景[A].见:高瑞琪,赵政璋,编.中国油气新区勘探第五卷[C].北京:石油工业出版社,2001.1～321
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7蔡立国,刘和甫.四川前陆褶皱-冲断带构造样式与特征[J].石油实验地质,1997,19(2):115～120
8汪泽成,赵文智,徐安娜,等.四川盆地北部大巴山山前带构造样式与变形机制[J].现代地质,2006,20(3):429～435
9丁道桂,刘光祥.扬子板内递进变形———南方构造问题之二[J].石油实验地质,2007,29(3):238～246
10Harding TP,Lowell J D.Structural styles:their plate habitats and hydrocarbon traps in petroleum provinces[J].The American Asso-ciation of Petroleum Geologist Bulletin,1979,63(8):1016-1058
11刘和甫.前陆盆地类型及褶皱-冲断层样式[J].地学前缘,1995,2(3-4):59～68
12曾允孚,李勇.龙门山前陆盆地形成与演化[J].矿物岩石,1995,15(1):40～49
13陈发景,汪新文,陈昭年.前陆盆地分析[M].北京:地质出版社,2007.1～282
14何鲤,刘莉萍,罗潇,等.川西龙门山推覆构造特征及有利油气勘探区块预测[J].石油实验地质,2007,29(3):247～252
15吴德超,魏显贵,杜思清,等.米仓山叠加型推覆构造几何结构及演化[J].矿物岩石,1988,18(增刊):16～20
16田海芹,郭彤楼,胡东风,等.黔中隆起及其周缘地区海相下组合与油气勘探前景[J].古地理学报,2006,8(4):509～518
17郭华,吴正文,柴育成.大别山造山带中生代逆冲推覆构造系统[J].现代地质,2002,16(2):121～129
18刘云生,杨振武,陈红,等.东秦岭大别造山带南缘隐伏前峰构造与盆地成生关系[J].江汉石油学院学报,2004,26(3):21～24
19马永生,楼章华,郭彤楼,等.中国南方海相地层油气保存条件综合评价技术体系探讨[J].地质学报,2006,80(3):406～417
2戴少武,贺自爱,王津义.中国南方中、古生界油气勘探的思路[J].石油与天然气地质,2001,22(3):195～202
3肖开华,沃玉进,周雁,等.中国南方海相层系油气成藏特点与勘探方向[J].石油与天然气地质,2006,27(3):316～325
4沃玉进,肖开华,周雁,等.中国南方海相层系油气成藏组合类型与勘探前景[J].石油与天然气地质,2006,27(1):11～16
5王根海,赵宗举,李大成,等.中国南方海相油气地质及勘探前景[A].见:高瑞琪,赵政璋,编.中国油气新区勘探第五卷[C].北京:石油工业出版社,2001.1～321
6刘和甫,梁慧社,蔡立国,等.川西龙门山冲断系构造样式与前陆盆地演化[J].地质学报,1994,68(2):101～110
7蔡立国,刘和甫.四川前陆褶皱-冲断带构造样式与特征[J].石油实验地质,1997,19(2):115～120
8汪泽成,赵文智,徐安娜,等.四川盆地北部大巴山山前带构造样式与变形机制[J].现代地质,2006,20(3):429～435
9丁道桂,刘光祥.扬子板内递进变形———南方构造问题之二[J].石油实验地质,2007,29(3):238～246
10Harding TP,Lowell J D.Structural styles:their plate habitats and hydrocarbon traps in petroleum provinces[J].The American Asso-ciation of Petroleum Geologist Bulletin,1979,63(8):1016-1058
11刘和甫.前陆盆地类型及褶皱-冲断层样式[J].地学前缘,1995,2(3-4):59～68
12曾允孚,李勇.龙门山前陆盆地形成与演化[J].矿物岩石,1995,15(1):40～49
13陈发景,汪新文,陈昭年.前陆盆地分析[M].北京:地质出版社,2007.1～282
14何鲤,刘莉萍,罗潇,等.川西龙门山推覆构造特征及有利油气勘探区块预测[J].石油实验地质,2007,29(3):247～252
15吴德超,魏显贵,杜思清,等.米仓山叠加型推覆构造几何结构及演化[J].矿物岩石,1988,18(增刊):16～20
16田海芹,郭彤楼,胡东风,等.黔中隆起及其周缘地区海相下组合与油气勘探前景[J].古地理学报,2006,8(4):509～518
17郭华,吴正文,柴育成.大别山造山带中生代逆冲推覆构造系统[J].现代地质,2002,16(2):121～129
18刘云生,杨振武,陈红,等.东秦岭大别造山带南缘隐伏前峰构造与盆地成生关系[J].江汉石油学院学报,2004,26(3):21～24
19马永生,楼章华,郭彤楼,等.中国南方海相地层油气保存条件综合评价技术体系探讨[J].地质学报,2006,80(3):406～417
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