DOI: 10.1306/08221312208
Scopus记录号: 2-s2.0-84898076587
论文题名: Evolution of shelf-margin clinoforms and deep-water fans during the middle Eocene in the Sorvestsnaget Basin, southwest Barents Sea
作者: Safronova P.A. ; Henriksen S. ; Andreassen K. ; Laberg J.S. ; Vorren T.O.
刊名: AAPG Bulletin
ISSN: 0149-1565
EISSN: 1558-9295
出版年: 2014
发表日期: 2014
卷: 98, 期: 3 起始页码: 515
结束页码: 544
语种: 英语
Scopus关键词: Sediments
; Tectonics
; Basin development
; Differential subsidence
; Relative sea level
; Relative sea level rise
; Sand accumulation
; Seafloor spreading
; Sedimentation rates
; Tectonic activity
; Sea level
; basin evolution
; deep water
; Eocene
; faulting
; sand
; sea level
; sea level change
; sedimentation rate
; seismic data
; subsidence
; trajectory
; transformation
; Arctic Ocean
; Barents Sea
; Sorvestsnaget Basin
Scopus学科分类: Energy
; Earth and Planetary Sciences
英文摘要: Interpretation of seismic data from the Sørvestsnaget Basin, southwest Barents Sea, demonstrates gradual middle Eocene basin infilling (from the north) generated by southward-prograding shelf-margin clinoforms. The basin experienced continued accommodation development during the middle Eocene because of differential subsidence caused by the onset of early Eocene sea-floor spreading in the Norwegian-Greenland Sea, faulting, salt movement, and different tectonic activity between the Sørvestsnaget Basin and Veslemoy high. During this time, the margin shows transformation from an initially high-relief margin to a progradation in the final stage. The early stage of progradation is characterized by the establishment of generally oblique clinoform shifts creating a flat shelf-edge trajectory that implies a gentle falling or stable relative sea level and low accommodation-to-sediment supply ratio (<1) in the topsets. During the early stage of basin development, the high-relief margin, narrow shelf, stable or falling relative sea level, seismicity, and presumably high sedimentation rate caused accumulation of thick and areally extensive deep-water fans. Seismicscale sandstone injections deform the fans. A fully prograding margin developed when the shelf-to-basin profile lowered, apparently because of increased subsidence of the northern part. This stage of the basin development is generally characterized by the presence of sigmoid clinoform shifts creating an ascending shelf-edge trajectory that is implying steady or rising relative sea level with an accommodationto-sediment supply ratio of greater than 1, implying sand accumulation on the shelf. This study suggests that some volume of sand was transported into the deep water during relative sea level rise considering the narrow shelf and inferred high rates of sediment supply. © 2014. The American Association of Petroleum Geologists. All rights reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84898076587&doi=10.1306%2f08221312208&partnerID=40&md5=166e6cc4bdb1b7fec59e92ac9c11bec8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13136
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:
Safronova P.A.,Henriksen S.,Andreassen K.,et al. Evolution of shelf-margin clinoforms and deep-water fans during the middle Eocene in the Sorvestsnaget Basin, southwest Barents Sea[J]. AAPG Bulletin,2014-01-01,98(3)