DOI: 10.1029/2012GL054181
论文题名: Revised Eocene-Oligocene kinematics for the West Antarctic rift system
作者: Granot R. ; Cande S.C. ; Stock J.M. ; Damaske D.
刊名: Geophysical Research Letters
ISSN: 0094-9378
EISSN: 1944-9109
出版年: 2013
卷: 40, 期: 2 起始页码: 279
结束页码: 284
语种: 英语
Scopus关键词: Aeromagnetic surveys
; Kinematic model
; Local motions
; Northern basins
; Plate motions
; Ross ice shelves
; Sense of motion
; West antarctica
; Poles
; Kinematics
; aeromagnetic survey
; convergence
; Eocene-Oligocene boundary
; kinematics
; paleomagnetism
; rift zone
; Antarctica
; Ross Ice Shelf
; Ross Sea
; Southern Ocean
; West Antarctica
英文摘要: Past plate motion between East and West Antarctica along the West Antarctic rift system had important regional and global implications. Although extensively studied, the kinematics of the rift during Eocene-Oligocene time still remains elusive. Based on a recent detailed aeromagnetic survey from the Adare and Northern Basins, located in the northwestern Ross Sea, we present the first well-constrained kinematic model with four rotations for Anomalies 12o, 13o, 16y, and 18o (26.5-40.13 Ma). These rotation poles form a cluster suggesting a stable sense of motion during that period of time. The poles are located close to the central part of the rift implying that the local motion varied from extension in the western Ross Sea sector (Adare Basin, Northern Basin, and Victoria Land Basin) to dextral transcurrent motion in the Ross Ice Shelf and to oblique convergence in the eastern end of the rift zone. The results confirm previous estimates of 95 km of extension in the Victoria Land Basin. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874829229&doi=10.1029%2f2012GL054181&partnerID=40&md5=093392509e6ac7e90d4a824481b2f38d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6642
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geological and Environmental Sciences, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
Recommended Citation:
Granot R.,Cande S.C.,Stock J.M.,et al. Revised Eocene-Oligocene kinematics for the West Antarctic rift system[J]. Geophysical Research Letters,2013-01-01,40(2).