DOI: 10.1306/03021514023
Scopus记录号: 2-s2.0-84944350919
论文题名: Tectonic variation and structural evolution of the West Greenland continental margin
作者: Alsulami S. ; Paton D.A. ; Cornwell D.G.
刊名: AAPG Bulletin
ISSN: 0149-1517
EISSN: 1558-9247
出版年: 2015
发表日期: 2015
卷: 99, 期: 9 起始页码: 1689
结束页码: 1712
语种: 英语
Scopus关键词: Faulting
; Heat transfer
; Hydrocarbons
; Petroleum prospecting
; Seismology
; Stratigraphy
; Basin-bounding faults
; Hydrocarbon exploration
; Inversion structures
; Seismic interpretation
; Structural component
; Structural configurations
; Structural evolution
; Structural modifications
; Tectonics
; continental margin
; Eocene
; heat flow
; hydrocarbon exploration
; lithosphere
; Neogene
; rifting
; seafloor
; tectonic evolution
; two-dimensional modeling
; volcano
; Arctic
; Arctic Ocean
; Atlantic Ocean
; Baffin Bay [Arctic Ocean]
; Davis Strait
; Greenland
; Labrador Sea
; Calluna vulgaris
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Because of its geographic extent of over 2500 km (1553 mi), the West Greenland margin provides a much understudied example of a divergent continental margin, both with respect to hydrocarbon exploration and academic studies. A seismic interpretation study of representative two-dimensional reflection profiles from the Labrador Sea, Davis Strait, and Baffin Bay was undertaken to identify sedimentary and structural components to elucidate the tectonic development of the margin. Nine horizons were interpreted from six representative seismic lines in the area. Margin-scale tectono-stratigraphy was derived from isochron maps, the geometry of mappable faults and their associated stratal architecture. Rifting began in Early to Late Cretaceous at ca. 145-130 Ma, which was followed by two pulses of volcanism in Eocene and Paleocene ages. The transition to the drift stage includes a typical subsidence phase but also erosion, uplift, and deposition of Neogene postrift packages. The shift in the position of depocenters in the Davis Strait and the Labrador Sea during Paleocene and Miocene times is evidence for structural modification of the basin bounding faults. Drift stage deformation suggests a possible anticlockwise rotation in the orientation of the spreading axis in Baffin Bay culminating in an ultraslow sea-floor spreading. Sea-floor spreading on the West Greenland margin started in the south at 70 Ma in the Labrador Sea and propagated northward into the Baffin Bay by 60 Ma. Prospective petroleum systems include thick Cretaceous age strata, with structural traps provided by grabens and inversion structures. Our structural model provides insight into a margin that is highly variable in its structural configuration, further modified by other processes such as magma-assisted rifting that may result in elevated regional heat flow, which has considerable impact on hydrocarbon maturation. Further constraining the implications of heat flow associated with volcanic activities in comparison to that associated with lithospheric stretching will be critical in future exploration. Copyright © 2015. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84944350919&doi=10.1306%2f03021514023&partnerID=40&md5=970e572a3f3e32c64f4092f21144bf16
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13088
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:
Alsulami S.,Paton D.A.,Cornwell D.G.. Tectonic variation and structural evolution of the West Greenland continental margin[J]. AAPG Bulletin,2015-01-01,99(9)