DOI: 10.1016/j.quascirev.2013.08.015
Scopus记录号: 2-s2.0-84900403868
论文题名: Onset and growth of Trough-Mouth Fans on the North-Western Barents Sea margin - implications for the evolution of the Barents Sea/Svalbard Ice Sheet
作者: Rebesco M. ; Laberg J.S. ; Pedrosa M.T. ; Camerlenghi A. ; Lucchi R.G. ; Zgur F. ; Wardell N.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 92 起始页码: 227
结束页码: 234
语种: 英语
英文关键词: Barents Sea
; Glacigenic debris flow deposits
; Multichannel seismic reflection profiles
; Seismostratigraphy
; Trough-Mouth Fans
Scopus关键词: Deposition
; Seismic waves
; Stratigraphy
; Barents sea
; Glacigenic debris flows
; Mass-wasting
; Multichannel seismic reflection profiles
; New correlations
; Seismostratigraphy
; Shelf edges
; Spitsbergen
; Glaciers
; contourite
; debris flow
; glacial erosion
; ice sheet
; mass wasting
; Ocean Drilling Program
; seismic reflection
; seismic stratigraphy
; shelf break
; trough
; Arctic
; Arctic Ocean
; Barents Sea
; Bellsund
; Hornsund
; Spitsbergen
; Storfjorden
; Svalbard
; Svalbard and Jan Mayen
英文摘要: The aim of this study is to discuss the onset and growth of the Bellsund, Hornsund and Storfjorden Trough-Mouth Fans (TMFs) on the North-Western Barents Sea margin. This is done on the basis of a seismo-stratigraphic analysis of new 2D seismic reflection profiles, and a new correlation between ODP Site 986 west of Spitsbergen and the seismo-stratigraphic network in the central part of the Western Barents Sea margin. We infer that reflector R4A marks the onset of both the development of the TMFs and the contourite deposition which dominate this part of the margin from this time onward. We conclude that these deposits were frequently affected by episodes of small-scale mass-wasting, focused at the mouth of the glacially eroded cross-shelf troughs. With a new interpolation between the few available constraints, we propose an age of about 1.3Ma for the onset of both the development of the TMFs and the contourite deposition. Thus, we hypothesize, from our results and from previous studies, that the Barents Sea/Svalbard Ice Sheet expanded first beyond the coast north of Svalbard, later reaching the shelf edge at the mouth of Bjørnøyrenna and then to Storfjorden/southern Spitsbergen. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60296
Appears in Collections: 过去全球变化的重建
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作者单位: OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Sgonico, TS, Italy; University of Tromsø, Dept. of Geology, N-9037 Tromsø, Norway; Instituto Andaluz de Ciencias de la Tierra, Granada, Spain
Recommended Citation:
Rebesco M.,Laberg J.S.,Pedrosa M.T.,et al. Onset and growth of Trough-Mouth Fans on the North-Western Barents Sea margin - implications for the evolution of the Barents Sea/Svalbard Ice Sheet[J]. Quaternary Science Reviews,2014-01-01,92