酒西盆地早白垩世沉积特征及原型盆地恢复
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摘要
通过对盆地下白垩统各组古流向、砾岩砾石成分等沉积特征的综合分析,结合玉门油田地震、测井、钻井资料,证明早白垩世赤金峡山、黑山并未隆起成山;宽滩山凸起(宽滩山为其一部分)只在下沟组沉积早期露出水面遭受剥蚀。由于规模较小,且呈长轴状沿北东-南西向展布,不足以隔断酒西地区(现今酒西盆地所涵盖的区域)同花海凹陷的联系。酒西盆地早白垩世为一受北西-南东向伸展作用控制的断陷盆地。盆地演化经历了断陷初始阶段、断陷扩展阶段及盆地萎缩消亡阶段,分别对应于下白垩统赤金堡组、下沟组和中沟组沉积时期。
An integrated analysis of depositional characteristics such as paleocurrents and gravel composition of the Lower Cretaceous strata in the Jiuxi Basin,combined with the seismic,logging,and drilling data of Yumen oilfield,proves that Chijinxia mountain and Hei mountain didn't exist in the Early Cretaceous,and the Kuantanshan low uplift(with Kuantan mountain as a part of it) did not separate Jiuxi Basin from Huahai sag due to its small scale and NE-SW-trending long axis.The researches shows that Jiuxi Basin was a rifted basin controlled mainly by NW-SE extension in the early Cretaceous.The basin experienced three stages during its evolution: initiation,growth and die-out,which correspond to the deposition periods of Chijinbao,Xiagou,and Zhonggou formations respectively.
An integrated analysis of depositional characteristics such as paleocurrents and gravel composition of the Lower Cretaceous strata in the Jiuxi Basin,combined with the seismic,logging,and drilling data of Yumen oilfield,proves that Chijinxia mountain and Hei mountain didn't exist in the Early Cretaceous,and the Kuantanshan low uplift(with Kuantan mountain as a part of it) did not separate Jiuxi Basin from Huahai sag due to its small scale and NE-SW-trending long axis.The researches shows that Jiuxi Basin was a rifted basin controlled mainly by NW-SE extension in the early Cretaceous.The basin experienced three stages during its evolution: initiation,growth and die-out,which correspond to the deposition periods of Chijinbao,Xiagou,and Zhonggou formations respectively.
引文
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14何光玉,杨树锋,陈汉林,等.河西走廊西段及邻区早白垩世盆地的重新厘定[J].石油学报,2004,25(6):18~22
15万静萍,马立祥,周宗良.恢复酒西地区白垩系变形盆地原始沉积边界的方法探讨[J].石油实验地质,1989,11(3):245~249
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18王晓丰,张志诚,郭召杰,等.酒西盆地南缘旱峡早白垩世火山岩地球化学特征及其构造意义[J].高校地质学报,2004,10(4):569~577
19秦都.塔里木盆地西南地区侏罗纪原型盆地类型与特征[J].石油与天然气地质,2005,26(6):831~839
2赵应成.酒西盆地含油气系统与油气勘探方向[J].石油实验地质,1998,20(4):362~367
3陈建平,陈建军,张立平,等.酒西盆地油气形成与勘探方向新认识(一)———基本石油地质条件及生油潜力[J].石油勘探与开发,2001,28(1):19~22
4端木合顺,朱莲芳.酒西盆地下白垩统下沟组重力流水下扇沉积[J].沉积学报,1990,8(2):75~85
5姚金福,朱莲芳.酒西盆地石北地区晚侏罗—早白垩世沉积相研究[J].沉积学报,1989,7(4):105~111
6张琴,朱筱敏,张建军,等.酒西盆地青南凹陷柳沟庄-窟窿山地区下白垩统震积岩的发现及意义[J].地质学报,2003,77(2):158~162
7文华国,郑荣才,叶泰然,等.酒西盆地青西凹陷下白垩统沉积特征与有利勘探区预测[J].沉积与特提斯地质,2005,25(4):71~77
8杜文博,程少林,陈建军,等.青西油田下白垩统下沟组储集层特征[J].新疆石油地质,2003,24(1):38~40
9苏建平,吴保祥,雷怀彦,等.甘肃酒西白垩纪盆地沉积构成及盆地演化动力学分析[J].沉积学报,2002,20(4):568~573
10 Wang B Q,Chen HL,Yang S F,et al.Geometry and kinematics ofLate Cretaceous inversion structures in the Jiuquan Basin,westernChina[J].Cretaceous Research,2005,26(2):319-327
11王崇孝,马国福,周在华.酒泉盆地中、新生代构造演化及沉积充填特征[J].石油勘探与开发,2005,32(1):33~36
12李奋其,王成善,王崇孝.酒泉早白垩世盆地群构造特征和成因[J].地质学报,2006,80(2):181~191
13冯增昭.沉积岩石学[M].北京:石油工业出版社,1993.72
14何光玉,杨树锋,陈汉林,等.河西走廊西段及邻区早白垩世盆地的重新厘定[J].石油学报,2004,25(6):18~22
15万静萍,马立祥,周宗良.恢复酒西地区白垩系变形盆地原始沉积边界的方法探讨[J].石油实验地质,1989,11(3):245~249
16宋廷光.酒西盆地老君庙逆冲断裂带及其演化[J].石油与天然气地质,1989,10(1):75~82
17黄华芳,郑国东,方国庆,等.酒西盆地南缘推覆构造及其含油领域[J].石油与天然气地质,1993,14(3):181~190
18王晓丰,张志诚,郭召杰,等.酒西盆地南缘旱峡早白垩世火山岩地球化学特征及其构造意义[J].高校地质学报,2004,10(4):569~577
19秦都.塔里木盆地西南地区侏罗纪原型盆地类型与特征[J].石油与天然气地质,2005,26(6):831~839
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