Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/11111918076 |
Development and growth of basement-involved structural wedges in the northwestern Qaidam Basin, China | |
Sun, Yanpeng1,2; Shaw, John H.1; Guan, Shuwei3; Ma, Dade4; Ma, Xinmin5 | |
2020-05-15 | |
发表期刊 | AAPG BULLETIN
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ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2020 |
卷号 | 104期号:5页码:1091-1113 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | Structural wedges contain two connected fault segments, a fore thrust and back thrust, that bound a triangular- or wedge-shaped fault block. Coeval displacements on both faults drive the wedge into surrounding rock, causing distinctive patterns of uplift and folding. We identified a series of thick-skinned structural wedges in northwestern Qaidam Basin, China, where syntectonic strata record deformation timing and kinematics. The Qaidam Basin is located at the northern margin of the Tibetan Plateau and contains more than 100 large anticlinal structures, many of which exhibit characteristics of structural wedges. We interpreted and modeled these structures using seismic reflection data, well logs, surface geological exposures, remote sensing images, and digital elevation data. These wedge structures are distinguished by having elevated and deformed strata in the footwalls of the back thrusts and synclinal folds that extend upward from the wedge tips. With the constraints of fold shape, growth strata, structural relief, and shallow fault geometry, we developed a series of forward models that describe the geometry and kinematic evolution of these wedge structures. The analysis suggests that some of the wedge structures reactivate preexisting normal faults. Our results provide a better understanding of how to identify thick-skinned wedge systems and model their geometry and kinematic evolution, which has implications for studying the tectonic history of the basin. Understanding the geometry and kinematics of the wedge structures is also crucial for petroleum exploration because both hanging-wall and footwall traps constitute an important component of current exploration targets. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000533667600005 |
WOS关键词 | ALTYN-TAGH FAULT ; NORTHERN TIBETAN PLATEAU ; EASTERN KUNLUN MOUNTAINS ; U-PB GEOCHRONOLOGY ; TRIANGLE ZONE ; NW CHINA ; CENOZOIC DEFORMATION ; TECTONIC EVOLUTION ; TIAN-SHAN ; GEOMETRY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/286558 |
专题 | 地球科学 |
作者单位 | 1.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 2.Shell Explorat & Prod Co, Houston, TX 77079 USA; 3.PetroChina, Res Inst Petr Explorat & Dev RIPED, Beijing, Peoples R China; 4.Qinghai Oilfield Co, PetroChina, Dunhuang, Peoples R China; 5.PetroChina, Northwest Branch, RIPED, Lanzhou, Peoples R China |
推荐引用方式 GB/T 7714 | Sun, Yanpeng,Shaw, John H.,Guan, Shuwei,et al. Development and growth of basement-involved structural wedges in the northwestern Qaidam Basin, China[J]. AAPG BULLETIN,2020,104(5):1091-1113. |
APA | Sun, Yanpeng,Shaw, John H.,Guan, Shuwei,Ma, Dade,&Ma, Xinmin.(2020).Development and growth of basement-involved structural wedges in the northwestern Qaidam Basin, China.AAPG BULLETIN,104(5),1091-1113. |
MLA | Sun, Yanpeng,et al."Development and growth of basement-involved structural wedges in the northwestern Qaidam Basin, China".AAPG BULLETIN 104.5(2020):1091-1113. |
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