FN Archimer Export Format
PT J
TI Tectono‐Stratigraphic Evolution of the Kerguelen Large Igneous Province: The Conjugate William’s Ridge‐Broken Ridge Rifted Margins
BT 
AF Magri, L.
   Whittaker, J. M.
   Coffin, M. F.
   Hochmuth, K.
   Gürer, D.
   Williams, S.
   Bernardel, G.
   Uenzelmann‐Neben, G.
AS 1:1,2;2:1;3:1,3,4;4:1,2;5:1,5;6:1;7:6;8:7;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Institute for Marine and Antarctic Studies University of Tasmania Hobart TAS, Australia
   Australian Centre for Excellence in Antarctic Sciences University of Tasmania Hobart TAS ,Australia
   School of Earth and Climate Sciences University of Maine Orono ME, USA
   Department of Geology and Geophysics Woods Hole Oceanographic Institution Woods Hole MA ,USA
   School of the Environment The University of Queensland St. Lucia QLD, Australia
   Geoscience Australia Canberra ACT ,Australia
   Alfred‐Wegener‐Institut Helmholtz‐Zentrum für Polar‐ und Meeresforschung Bremerhaven ,Germany
C2 UNIV TASMANIA, AUSTRALIA
   UNIV TASMANIA, AUSTRALIA
   UNIV MAINE, USA
   WHOI, USA
   UNIV QUEENSLAND, AUSTRALIA
   GEOSCIENCE AUSTRALIA, AUSTRALIA
   INST A WEGENER, GERMANY
IF 3.9
TC 0
UR https://archimer.ifremer.fr/doc/00880/99205/109056.pdf
   https://archimer.ifremer.fr/doc/00880/99205/109057.pdf
LA English
DT Article
CR MARGAU-MD110
BO Marion Dufresne
DE ;rifting;Kerguelen mantle plume;Large Igneous Province;magma-poor;deformation migration;transform motion
AB Extensive investigation of continental rift systems has been fundamental for advancing the understanding of extensional tectonics and modes of formation of new ocean basins. However, current rift classification schemes do not account for conjugate end members formed by Large Igneous Province crust, referring to thick mafic crust, sometimes including continental fragments. Here, we investigate the rifting of William's Ridge (Kerguelen Plateau) and Broken Ridge, components of the Kerguelen Large Igneous Province now situated in the Southeast Indian Ocean, and incorporate these end members into the deformation migration concept for rifted margins. We use multichannel seismic reflection profiles and data from scientific drill cores acquired on both conjugate margins to propose, for the first time, a combined tectono‐stratigraphic framework. We interpret seismic patterns, tectonic features, and magnetic anomaly picks to determine an across‐strike structural domain classification. This interpretation considers the rift system overall to be “magma‐poor” despite being located proximal to the Kerguelen plume but suggests that syn‐rift interaction between the Kerguelen mantle plume and the lithospheric structure of William's Ridge and Broken Ridge has controlled the along‐strike segmentation of both conjugates. We integrate seismic reflection and bathymetric data to test the hypothesis of predominantly transform motion, between the Australian and Antarctic plates, in Late Cretaceous and Paleogene time. 
PY 2024
PD MAR
SO Journal Of Geophysical Research-solid Earth
SN 2169-9313
PU American Geophysical Union (AGU)
VL 129
IS 3
UT 001173596400001
DI 10.1029/2023JB027493
ID 99205
ER

EF