FN Archimer Export Format
PT J
TI Mud volcano growth by radial expansion: Examples from onshore Azerbaijan
BT 
AF Odonne, Francis
   Imbert, Patrice
   Dupuis, Matthieu
   Aliyev, Adil A.
   Abbasov, Orhan R.
   Baloglanov, Elnur E.
   Vendeville, Bruno C.
   Gabalda, Germinal
   Remy, Dominique
   Bichaud, Victoria
   Juste, Rémy
   Pain, Maëlys
   BLOUIN, Arthur
   Dofal, Anthony
   Gertauda, Mathieu
AS 1:1;2:2;3:3;4:4;5:4;6:4;7:3;8:1;9:1;10:1;11:1;12:1;13:5;14:1,3;15:1,3;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:PDG-REM-GM-LAD;14:;15:;
C1 Géosciences Environnement Toulouse (GET), Observatoire Midi Pyrénées, Université de Toulouse, CNRS, IRD, UMR, 5563, 14 Avenue E. Belin, F31400, Toulouse, France
   TOTAL CSTJF, Avenue Larribau, 64000, Pau, France
   Univ. Lille, CNRS, Univ. Littoral Côte d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, F 59000, Lille, France
   Institute of Geology and Geophysics, Azerbaijan National Academy of Sciences, H. Javid Avenue, 119, Baku, AZ1143, Azerbaijan
   IFREMER, REM/GM/LAD, Centre de Bretagne - ZI de la Pointe du Diable, F-29280, Plouzané, France
C2 OBSERV MIDI PYRENEES, FRANCE
   TOTAL CSTJF, FRANCE
   UNIV LILLE, FRANCE
   AZERBAIJAN NTL ACAD SCES, AZERBAIJAN
   IFREMER, FRANCE
SI BREST
SE PDG-REM-GM-LAD
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 4.348
TC 8
UR https://archimer.ifremer.fr/doc/00515/62689/67076.pdf
LA English
DT Article
DE ;Flat-topped mud-volcanoes;Azerbaijan;Growth of flat mud volcanoes;Resistivity-gravity data;Low-density mud at depth;Mudflows stacking;Soft mud
AB We investigated the mode of growth of flat-topped mud volcanoes, through the study of three active edifices onshore Azerbaijan: they are the Bozdag-Guzdek, the Ayazakhtarma and the Akhtarma-Pashaly mud volcanoes. The three edifices are up to 80 m high and 3 km wide, and the recurrence time between eruptions from a few months to a few years. Surface changes during and between eruptions were documented by a combination of mapping from satellite pictures, repeated direct observation over five years and structural analysis. In addition, resistivity profiles and microgravity measurements were used to decipher their subsurface geometries. We interpret the flat-topped character of the mud volcanoes as the result of rapid “isostatic” readjustment of a brittle surface crust, < 1 m to tens of meters thick, overlying a ductile layer. The surface structure typically shows a concentric transition from an extensional regime in the vicinity of the emission center, to strike slip movements in a median ring, to a compressional regime with thrusts, and pop-up blocks or folds in the outer part of the plateau. Both the flat surface of these mud volcanoes and observed radial displacements of the surface, combined with the very low Bouguer anomaly of the Ayazakhtarma mud volcano, give arguments to propose that km-diameter, flat-topped mud volcanoes likely reflect the presence at a shallow depth (a few tens of meters?) of a large volume of soft mud. Rapid compaction at the surface forms a crust that moves away from a central feeding area, thereby transferring mud added at the center into lateral spreading, building a Coulomb prism all around the mud volcano and strongly limiting vertical buildup. 
PY 2020
PD FEB
SO Marine And Petroleum Geology
SN 0264-8172
PU Elsevier BV
VL 112
UT 000509622600015
DI 10.1016/j.marpetgeo.2019.104051
ID 62689
ER

EF