Deep-structure seismic imaging from the Limpopo magma-rich transform margin (South Mozambique)

Date 2020
Author(s) Watremez LouiseORCID1, Leroy SylvieORCID2, D'Acremont EliaORCID2, Roche VincentORCID2, Lepretre Angelique3, Verrier Fanny3, Aslanian DanielORCID3, Dias Nuno4, Afilhado AlexandraORCID5, Schnurle PhilippeORCID3, Castilla Raymi6, Despinois FrankORCID7, Moulin MarylineORCID3
Affiliation(s) 1 : Univ. Lille, CNRS, Univ. Littoral Côte d’Opale, UMR 8187 – LOG – Laboratoire d’Océanologie et de Géosciences, Lille, France
2 : Sorbonne Université, CNRS, Institut des Sciences de la Terre de Paris, ISTeP, Paris, France
3 : IFREMER, REM/GM/LGS, Centre de Brest, Plouzané, France
4 : IDL, Instituto Dom Luis, Faculdade das Ciencias de Universidade de Lisboa, Lisboa, Portugal
5 : ISEL, Instituto Superior de Engenharia de Lisboa, Lisboa, Portugal
6 : Géo-Energie, Zürich, Switzerland
7 : Total Exploration et Production, Pau, France
DOI 10.17882/76489
Publisher SEANOE
Keyword(s) Refraction seismic, Transform margin, P-waves models
Abstract

The east Limpopo margin, offshore north Mozambique, is known as a transform margin, formed from the break-up of the Gondwana supercontinent, as Africa and Antarctica separated during the mid-Jurassic period. The nature of the crust onshore has been discussed for decades to solve plate reconstruction issues. Two seismic refraction models with coincident multichannel seismic reflection profiles allow us to obtain a detailed interpretation of the velocity structures across the margin. This comprehensive dataset provides (1) the delineation of the major crustal domains in the study area, which is continental onland; (2) P-wave velocities and major geological interfaces down to the Moho; and (3) the along-strike variations of the deep structures and indications of magmatism. 

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How to cite 

Watremez Louise, Leroy Sylvie, D'Acremont Elia, Roche Vincent, Lepretre Angelique, Verrier Fanny, Aslanian Daniel, Dias Nuno, Afilhado Alexandra, Schnurle Philippe, Castilla Raymi, Despinois Frank, Moulin Maryline (2020). Deep-structure seismic imaging from the Limpopo magma-rich transform margin (South Mozambique). SEANOE. https://doi.org/10.17882/76489