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Main Title: Fault‐controlled lithospheric detachment of the volcanic southern South Atlantic rift
Author(s): Becker, Katharina
Tanner, David C.
Franke, Dieter
Krawczyk, Charlotte M.
Type: Article
Language Code: en
Abstract: We present structural models of two exemplary conjugate seismic lines of the southernmost South Atlantic margins to examine their initial evolution, especially the seaward‐dipping reflectors (SDRs). Modeling illustrates the different structure and inclination angles of the SDRs, which therefore require different subsidence histories. Since typical symmetrical subsidence models are not applicable, we suggest a model with a westward‐dipping detachment fault that offsets the SDRs on the South American margin and we speculate on passively subsided SDRs on the South African margin. We propose a simple‐shear rifting mechanism to explain the initial break‐up of the South Atlantic.
Issue Date: 17-Feb-2016
Date Available: 12-Dec-2019
DDC Class: 550 Geowissenschaften
Subject(s): seaward‐dipping reflectors
South Atlantic
simple shear model
fault modeling
Sponsor/Funder: DFG, 61089689, SPP 1375: SAMPLE: South Atlantic Margin Processes and Links with onshore Evolution
Journal Title: Geochemistry, Geophysics, Geosystems
Publisher: American Geophysical Union (AGU)
Publisher Place: Hoboken, NJ
Volume: 17
Issue: 3
Publisher DOI: 10.1002/2015GC006081
Page Start: 887
Page End: 894
EISSN: 1525-2027
Notes: © 2016. American Geophysical Union.
Appears in Collections:FG Angewandte Geophysik » Publications

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