FN Archimer Export Format
PT J
TI The Limpopo magma‐rich transform margin, South Mozambique – Part 1: Insights from deep‐structure seismic imaging
BT 
AF Watremez, L.
   Leroy, S.
   d’Acremont, E.
   Roche, V.
   Evain, Mikael
   Leprêtre, A.
   Verrier, Fanny
   Aslanian, Daniel
   Dias, N.
   Afilhado, A.
   Schnurle, Philippe
   Castilla, R.
   Despinois, F.
   Moulin, Maryline
AS 1:1;2:2;3:2;4:2;5:3;6:3;7:3;8:3;9:4,5;10:4,5;11:3;12:6;13:7;14:3;
FF 1:;2:;3:;4:;5:PDG-REM-GM-LGS;6:;7:PDG-REM-GM-LGS;8:PDG-REM-GM-LGS;9:;10:;11:PDG-REM-GM-LGS;12:;13:;14:PDG-REM-GM-LGS;
C1 Univ. Lille CNRS Univ. Littoral Côte d’Opale IRD UMR 8187 – LOG – Laboratoire d’Océanologie et de Géosciences F‐59000 Lille ,France
   Sorbonne Université CNRS Institut des Sciences de la Terre de Paris UMR 7193 ISTeP Paris,France
   IFREMER REM/GM/LGS Centre de Brest Plouzané, France
   Instituto Dom Luis (IDL) Faculdade das Ciências Universidade de Lisboa Campo Grande1749‐016 Lisboa, Portugal
   Instituto Superior de Engenharia de Lisboa Instituto Politécnico de Lisboa 1959‐007 Lisboa, Portugal
   Géo‐Energie Zürich,Switzerland
   TotalEnergies SE R&D Sustainability Pau, France
C2 UNIV LITTORAL COTE D'OPALE, FRANCE
   UNIV SORBONNE, FRANCE
   IFREMER, FRANCE
   UNIV LISBOA, PORTUGAL
   INST POLITECN LISBOA, PORTUGAL
   GEO‐ENERGIE ZURICH, SWITZERLAND
   TOTAL, FRANCE
SI BREST
SE PDG-REM-GM-LGS
IN WOS Ifremer UPR
   copubli-france
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
IF 5.261
TC 8
UR https://archimer.ifremer.fr/doc/00737/84860/89885.pdf
   https://archimer.ifremer.fr/doc/00737/84860/89886.pdf
LA English
DT Article
CR PAMELA-MOZ03
   PAMELA-MOZ05
BO Pourquoi pas ?
DE ;transform margin;Mozambique;magmatism;seismic refraction
AB A variety of structures results from the interplay of evolving far field forces, plate kinematics and magmatic activity during continental break-up. The east Limpopo transform margin, offshore northern Mozambique, formed as Africa and Antarctica separated during the mid-Jurassic period break-up of the Gondwana supercontinent. The nature of the crust onshore has been discussed for decades in an effort to resolve issues with plate kinematic models. Two seismic refraction profiles with coincident multichannel seismic reflection profiles allow us to interpret the seismic velocity structures across the margin, both onshore and offshore. These seismic profiles allow us to (1) delineate the major regional crustal domains; (2) identify widespread indications of magmatic activity; and (3) map crustal structure and geometry of this magma-rich transform margin. Careful examination of the profiles allows us to make the following observations and interpretations: (1) on land, continental crust is overlain by a >10 km thick volcano-sedimentary wedge related to an early rifting stage, (2) offshore, thick oceanic crust formed due to intense magmatic activity, and between the two (3) a 50-60 km wide transform zone where the crustal structures are affected by intense magmatic activity and faulting. The prominent presence of intrusive and extrusive igneous units may be attributed the combination of a deep-seated melting anomaly and a trans-tensional fault zone running through thinned lithosphere that allowed melt to reach the surface. A comparison of the crustal thinning along other transform margins shows a probable dependence with the thermal and/or tectonic history of the lithosphere. 
PY 2021
PD DEC
SO Tectonics
SN 0278-7407
PU American Geophysical Union (AGU)
VL 40
IS 12
UT 000735865800004
DI 10.1029/2021TC006915
ID 84860
ER

EF