FN Archimer Export Format
PT J
TI Crustal Structure and Stratigraphy of the South Mozambique Margin to South Mozambique Ridge From Combined Wide‐Angle and Reflection Seismic and Drill Hole Data
BT 
AF Schnürle, Philippe
   Leprêtre, A.
   Evain, Mikael
   Verrier, Fanny
   De‐Clarens, P.
   Thompson, Joseph
   Dias, N.
   Afilhado, A.
   Loureiro, A.
   Leroy, S.
   d'Acremont, E.
   Aslanian, Daniel
   Moulin, Maryline
AS 1:1;2:6;3:1;4:1;5:2;6:6;7:3;8:3;9:3,4;10:5;11:5;12:1;13:1;
FF 1:PDG-REM-GEOOCEAN-GIPS;2:;3:PDG-REM-GEOOCEAN-GIPS;4:PDG-REM-GM-LGS;5:;6:;7:;8:;9:;10:;11:;12:PDG-REM-GEOOCEAN-GIPS;13:PDG-REM-GEOOCEAN;
C1 Geo‐Ocean ,CNRS Ifremer UMR 6538 University of Brest Plouzane, France
   TOTAL, R&D Pau ,France
   IDL—Instituto Dom Luiz (IDL) ,Faculdade de Ciências Universidade de Lisboa Lisboa, Portugal
   ISEL,—Instituto Superior de Engenharia de Lisboa Lisboa, Portugal
   CNRS‐INSU ,Institut des Sciences de la Terre Paris ISTeP UMR 7193 Sorbonne Université, Paris, France
   Geo‐Ocean ,CNRS Ifremer UMR 6538 University of Brest Plouzane, France
C2 IFREMER, FRANCE
   TOTAL, FRANCE
   UNIV LISBOA, PORTUGAL
   ISEL, PORTUGAL
   UNIV SORBONNE, FRANCE
   UBO, FRANCE
SI BREST
SE PDG-REM-GEOOCEAN-GIPS
   PDG-REM-GM-LGS
   PDG-REM-GEOOCEAN
UM GEO-OCEAN
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-europe
   copubli-univ-france
IF 3.1
TC 2
UR https://archimer.ifremer.fr/doc/00858/96962/105643.pdf
   https://archimer.ifremer.fr/doc/00858/96962/105644.pdf
   https://archimer.ifremer.fr/doc/00858/96962/105646.odt
LA English
DT Article
CR PAMELA : PASSIVE MARGINS EXPLORATION LABORATORIES
   PAMELA-MOZ03
   PAMELA-MOZ05
BO Pourquoi pas ?
DE ;wide-angle seismic;continental margin;South Mozambique;North Natal Valley;crustal structure;East Gondwana breakup
AB We have analyzed the MZ6 onshore‐offshore wide‐angle seismic profile of the MOZ3‐5 survey to investigate the crustal structure of the South Mozambique passive margin. The NNW‐SSE, 625 km‐long profile runs across the Mozambique coastal plain (MCP), the Continental Shelf and Slope, the Almirante Leite Ridge (ALR), the North Natal Valley (NNV), the Ariel Graben and the Dana Plateau of the Mozambique Ridge. Forward modeling through combined interpretation of the multichannel seismic, the main reflected and refracted phases of the wide‐angle, drill hole data and bathymetric data reveal: (a) a sedimentary cover poorly compacted up to 3 km‐thick, intruded by magmatic dykes that reach the seafloor at the ALR forming 0.5 to 5 km‐wide corrugated mounts, (b) between 2 and 7 km, thick magmatic or volcano‐clastic deposits are observed both at the MCP and NNV, forming a 40 km‐wide terrace at the center of MZ6 and southward‐dipping reflectors in the southern part interpreted as the Pre‐Neocomian Formation contemporary of the Karroo and/or Bombeni‐Movene magmatic events reached in several wells, (c) onshore, the 3‐layered crust reaches 39 km thickness, gradually thinning to ∼27 km at the southern end of MZ6. In the deepest layer, velocities exceed 7.15 km/s, reaching at its base 7.55 km/s at the vertical of the ALR. (d) the seismic Moho is marked by a strong reflection on the wide‐angle data. These results suggests that the basement is composed of slightly thinned and altered continental crust, most likely intruded by several phases of intense magmatism. 
PY 2023
PD OCT
SO Earth And Space Science
SN 2333-5084
PU American Geophysical Union (AGU)
VL 10
IS 10
UT 001090870100001
DI 10.1029/2021EA001902
ID 96962
ER

EF