DOI: 10.13061/06251311013
Scopus记录号: 2-s2.0-84890909952
论文题名: Geometry, kinematics, and displacement characteristics of tear-fault systems: An example from the deep-water Niger Delta
作者: Benesh N.P. ; Plesch A. ; Shaw J.H.
刊名: AAPG Bulletin
ISSN: 0149-1620
EISSN: 1558-9350
出版年: 2014
发表日期: 2014
卷: 98, 期: 3 起始页码: 465
结束页码: 482
语种: 英语
Scopus关键词: Restoration
; Stratigraphy
; Tectonics
; Continental shelves
; Displacement characteristic
; Fold-and-thrust belts
; Late Oligocene
; Restoration techniques
; Seismic mapping
; Structural restorations
; Three-dimensional seismic reflection data
; Strike-slip faults
; continental shelf
; deformation
; displacement
; fault slip
; kinematics
; Oligocene
; seismic data
; seismic reflection
; thrust
; Niger Delta
; Nigeria
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: We use three-dimensional seismic reflection data and new mapbased structural restoration methods to define the displacement history and characteristics of a series of tear faults in the deepwater Niger Delta. Deformation in the deep-water Niger Delta is focused mosdy within two fold-and-thrust belts that accommodate downdip shortening produced by updip extension on the continental shelf. This shortening is accommodated by a series of thrust sheets that are locally cut by strike-slip faults. Through seismic mapping and interpretation, we resolve these strike-slip faults to be tear faults that share a common detachment level with the thrust faults. Acting in conjunction, these structures have accommodated a north-south gradient in westward-directed shortening. We apply a map-based restoration technique implemented in Gocad to restore an upper stratigraphic horizon of the late Oligocene and use this analysis to calculate slip profiles along the strike-slip faults. The slip magnitudes and directions change abruptly along the lengths of the tear faults as they interact with numerous thrust sheets. The discontinuous nature of these slip profiles reflects the manner in which they have accommodated differential movement between the footwall and hanging-wall blocks of the thrust sheets. In cases for which the relationship between a strikeslip fault and multiple thrust faults is unclear, the recognition of this type of slip profile may distinguish thin-skinned tear faults from more conventional deep-seated, throughgoing strike-slip faults. © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84890909952&doi=10.13061%2f06251311013&partnerID=40&md5=91318c95e24dcc544b37339911bb1f1d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13190
Appears in Collections: 过去全球变化的重建 影响、适应和脆弱性 科学计划与规划 气候变化与战略 全球变化的国际研究计划 气候减缓与适应 气候变化事实与影响
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Recommended Citation:
Benesh N.P.,Plesch A.,Shaw J.H.. Geometry, kinematics, and displacement characteristics of tear-fault systems: An example from the deep-water Niger Delta[J]. AAPG Bulletin,2014-01-01,98(3)