Buried structures in the Wuwei Basin, northeast margin of the Qilianshan structural belt

SHI Wei; ZHANG Bo; YANG Yong; ZHAO Zixian

doi:10.12097/j.issn.1671-2552.2022.10.001

2022 Vol. 41, No. 10

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SHI Wei, ZHANG Bo, YANG Yong, ZHAO Zixian. Buried structures in the Wuwei Basin, northeast margin of the Qilianshan structural belt[J]. Geological Bulletin of China, 2022, 41(10): 1711-1719. doi: 10.12097/j.issn.1671-2552.2022.10.001

Citation:

SHI Wei, ZHANG Bo, YANG Yong, ZHAO Zixian. Buried structures in the Wuwei Basin, northeast margin of the Qilianshan structural belt[J]. Geological Bulletin of China, 2022, 41(10): 1711-1719. doi: 10.12097/j.issn.1671-2552.2022.10.001

Buried structures in the Wuwei Basin, northeast margin of the Qilianshan structural belt

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Research Center of Neotectonism and Crustal Stability, China Geological Survey, Beijing 100081, China
3.
SinoProbe Laboratory, Chinese Academy of Geological Sciences, Beijing 100094, China
4.
The Second Institute of Geology and Minerals Exploration, Gansu Provincial Bureau of Geology and Minerals Exploration and Development, Lanzhou 730020, Gansu, China

Received Date: 10 March 2022

Revised Date: 15 April 2022

Publish Date: 15 October 2022

Abstract

Abstract

The Wuwei Basin in the northeast margin of Qilianshan structural belt is one of the oil/gas-bearing basins for Carboniferous shale gas exploration in the west China. However, much disagreement is going on the structures and tectonics in the Wuwei Basin due to the Quaternary covering of the basin. Here we conducted the 2D seismic surveying and drill exploration, and defined three sets of structural layers from the seismic profile, e.g., lower structural layer composed of Lower Cambrian strata (Dahuangshan Formation) and Early Cretaceous strata, middle structural layer consisting of Neogene strata, and upper structural layer formed of Quaternary strata. In the lower structural layer, some faulted basins developed, which were filled by the Lower Cambrian or Late Cretaceous; and the Lower Cambrian was also thrusted and folded.Together with regional structure analysis, we suggest three stages of deformation process, including NE-SW extension in the Early Cambrian, NE-SW shortening in the Late Jurassic-Early Cretaceous, and NE-SW extension in the Early Cretaceous.In addition, it also shows the differences on the regional structure and sedimentary sequences in the west and east parts of the Wuwei Basin, which indicates the Wuwei Basin, limited by the Wuwei-Caiqi structural belt, can be divided into west and east sub-basins.
- northeast margin of the Qilianshan structural belt /
- Wuwei Basin /
- seismic profile /
- Lower Cambrian /
- Cenozoic /
- buried structures

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References

[1]	玉门油田石油地质志编写组. 中国石油地质志(卷十三)[M]. 北京: 石油工业出版社, 1989. Google Scholar
[2]	李儒峰, 柳广弟, 马国富, 等. 武威盆地石炭系层序地层学研究[J]. 现代地质, 2010, 24(6): 1048-1056. doi: 10.3969/j.issn.1000-8527.2010.06.004 CrossRef Google Scholar
[3]	魏建设, 卢进才, 魏仙样, 等. 河西走廊地区石炭系烃源岩的特征[J]. 地质通报, 2010, 29(2): 367-373. doi: 10.3969/j.issn.1671-2552.2010.02.023 CrossRef Google Scholar
[4]	阎存凤, 袁剑英. 武威盆地石炭系沉积环境及含油气远景[J]. 天然气地球科学, 2011, 22(2): 267-274. Google Scholar
[5]	魏仙样, 卢进才, 魏建设, 等. 河西走廊地区石炭系—二叠系油气地质条件与含油气前景[J]. 地质通报, 2011, 30(6): 865-878. doi: 10.3969/j.issn.1671-2552.2011.06.007 CrossRef Google Scholar
[6]	杜治利, 田亚, 陈夷. 甘肃武威盆地儿马湖凹陷探获油气[J]. 中国地质, 2017, 4(1): 190-191. Google Scholar
[7]	陈夷, 杜治利, 杜小弟, 等. 利用CEMP测线结合重磁震对武威盆地进行构造单元划分[J]. 中国矿业, 2018, 27(1): 112-118. Google Scholar
[8]	刘洪军, 杜治利, 陈夷, 等. 武威盆地武地1井石炭系烃源岩地球化学特征及地质意义[J]. 天然气地球科学, 2021, 32(7): 1061-1072. Google Scholar
[9]	Zhao Z X, Shi W, Yang Y, et al. The Late Cenozoic crustal shortening in the north-east margin of the Qilian Shan: Evidence from the Fengle Basin, Gansu Province[J]. Geological Journal, 2020, 55: 7193-7205. doi: 10.1002/gj.3975 CrossRef Google Scholar
[10]	施炜, 赵子贤, 杨勇, 等. 祁连山东北缘武威盆地新近系甘肃群地层划分[J]. 地质通报, 2022, 41(2/3): 1-13. Google Scholar
[11]	孙栋华, 江民忠, 常树帅, 等. 河西走廊中东段基底岩相构造分析和大地构造单元划分[J]. 地球物理学进展, 2017, 32(1): 254-265. Google Scholar
[12]	胡峰, 龙思萍, 王雪梅, 等. 武威盆地儿马湖凹陷右炭系页岩气资源潜力及沉积目分析[J]. 复杂油气藏, 2019, 12(4): 19-23. Google Scholar
[13]	郭荣涛, 赵习, 刘红光, 等. 兰州盆地下白垩统碎屑岩层序地层序列: 祁连山早白垩世隆升的沉积学响应[J]. 吉林大学学报, 2016, 46(2): 321-335. Google Scholar
[14]	Zhao Z, Shi W, Yang Y, et al. Late Cenozoic magnetostratigraphy and paleoenvironmental change in the northeastern Tibetan Plateau: Evidence from a drill core in the Wuwei Basin, NW China[J/OL]. Journal of Asian Earth Sciences. 2021. https://doi.org/10.1016/j.jseaes.2021.105023. Google Scholar
[15]	Gradstein F M, Ogg J G, Ogg G M. The Geologic Time Scale[J]. Newsletters on Stratigraphy, 2012, 45(2): 171-188. Google Scholar
[16]	杨树锋, 陈汉林, 程晓敢, 等. 祁连山北缘冲断带的特征与空间变化规律[J]. 地学前缘, 2007, 14(5): 211-221. Google Scholar
[17]	艾晟, 张波, 樊春, 等. 武威盆地南缘断裂晚第四纪活动地表形迹与活动速率[J]. 地震地质, . 2017, 39(2): 408-422. Google Scholar
①	甘肃省地质局第一区域地质测量队. 1: 20万河西堡幅地质图及区域地质测量报告. 1968. Google Scholar