DOI: 10.1002/2014GL059405
论文题名: The subglacial geology of Wilkes Land, East Antarctica
作者: Aitken A.R.A. ; Young D.A. ; Ferraccioli F. ; Betts P.G. ; Greenbaum J.S. ; Richter T.G. ; Roberts J.L. ; Blankenship D.D. ; Siegert M.J.
刊名: Geophysical Research Letters
ISSN: 0094-10190
EISSN: 1944-9921
出版年: 2014
卷: 41, 期: 7 起始页码: 2390
结束页码: 2400
语种: 英语
英文关键词: Columbia
; East Antarctic Ice Sheet
; East Antarctica
; Gondwana
; Rodinia
Scopus关键词: Boundary conditions
; Glacial geology
; Glaciers
; Settling tanks
; Tectonics
; Columbia
; East antarctic ice sheets
; East antarctica
; Gondwana
; Rodinia
; Radio systems
; continental lithosphere
; fault
; geological mapping
; glacial sedimentation
; glaciation
; gravity field
; ice sheet
; magnetic field
; Rodinia
; sedimentary basin
; subglacial environment
; suture zone
; tectonics
; Antarctica
; Australia
; East Antarctica
; Wilkes Land
英文摘要: Wilkes Land is a key region for studying the configuration of Gondwana and for appreciating the role of tectonic boundary conditions on East Antarctic Ice Sheet (EAIS) behavior. Despite this importance, it remains one of the largest regions on Earth where we lack a basic knowledge of geology. New magnetic, gravity, and subglacial topography data allow the region's first comprehensive geological interpretation. We map lithospheric domains and their bounding faults, including the suture between Indo-Antarctica and Australo-Antarctica. Furthermore, we image subglacial sedimentary basins, including the Aurora and Knox Subglacial Basins and the previously unknown Sabrina Subglacial Basin. Commonality of structure in magnetic, gravity, and topography data suggest that pre-EAIS tectonic features are a primary control on subglacial topography the preservation of this relationship after glaciation suggests that these tectonic features provide topographic and basal boundary conditions that have strongly influenced the structure and evolution of the EAIS. Key Points Wilkes Land geology is comprehensively characterized for the first time New and known continent-scale faults and sedimentary basins are defined These major tectonic features define current subglacial topography © 2014. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899034016&doi=10.1002%2f2014GL059405&partnerID=40&md5=1b6897346dfec7c23560694656cffe8d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7454
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Environment, University of Western Australia, Perth, WA, Australia
Recommended Citation:
Aitken A.R.A.,Young D.A.,Ferraccioli F.,et al. The subglacial geology of Wilkes Land, East Antarctica[J]. Geophysical Research Letters,2014-01-01,41(7).