DOI: 10.1306/01051009164
Scopus记录号: 2-s2.0-77957814289
论文题名: Analog modeling of divergent and convergent transfer zones in listric normal fault systems
作者: Bose S. ; Mitra S.
刊名: AAPG Bulletin
ISSN: 0149-1912
EISSN: 1558-9642
出版年: 2010
发表日期: 2010
卷: 94, 期: 9 起始页码: 1425
结束页码: 1452
语种: 英语
Scopus关键词: Analog modeling
; Analog models
; Clay model
; Common features
; Fault offset
; Fault patterns
; Fault system
; Gulf of Mexico
; Half graben
; Migration pathway
; Normal fault system
; Normal faults
; Normal offsets
; Transfer zones
; Deformation
; Geologic models
; cluster analysis
; convergent margin
; deformation mechanism
; geometry
; listric fault
; numerical model
; transfer zone
; Atlantic Ocean
; Gulf of Mexico
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Transfer zones are common features in passive margins such as the Gulf of Mexico, where deformation between adjacent listric normal faults is accommodated by the formation of complex secondary fault systems. Two common types of transfer zones are (1) convergent, with the main faults dipping toward each other, and (2) divergent, with the main faults dipping away from each other. Analog clay models are developed for both convergent and divergent transfer zones with the faults approaching each other, offset by 90°, and overlapping each other. During extension, the structures initiate as symmetric grabens and later transform into asymmetric half grabens. The main fault and associated synthetic faults form a narrow zone of deformation, whereas the antithetic faults develop into a broader zone constituting evenly spaced discrete fault segments. Orien tations, lengths, densities, and sizes of connected fault clusters vary with the type of transfer zone, structural position relative to the fault offsets, and total extension. The experiments show that the antithetic faults in convergent transfer zones and synthetic faults in divergent transfer zones tend to be more consistent in orientation and connect easily. Synthetic faults in convergent transfer zones and antithetic faults in divergent transfer zones change orientation along strike toward the transfer zone. Fault connectivity in approaching transfer zones is generally higher than in normal offset or overlapping configurations. The analog models provide important insights on the geometry of fault patterns and possible fluid-migration pathways within transfer zones. Copyright © 2010. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-77957814289&doi=10.1306%2f01051009164&partnerID=40&md5=823fae775b085ef7f12e20fc864f80ad
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13481
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:
Bose S.,Mitra S.. Analog modeling of divergent and convergent transfer zones in listric normal fault systems[J]. AAPG Bulletin,2010-01-01,94(9)