FN Archimer Export Format
PT J
TI Gas migration pathways and slope failures in the Danube Fan, Black Sea
BT 
AF HILLMAN, Jess I. T.
   KLAUCKE, Ingo
   BIALAS, Joerg
   FELDMAN, Howard
   DREXLER, Tina
   AWWILLER, David
   ATGIN, Orhan
   CIFCI, Gunay
   BADHANI, Shray
AS 1:1,5;2:1;3:1;4:2;5:2;6:2;7:3;8:3;9:4;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:PDG-REM-GM-LAD;
C1 GEOMAR Helmholtz Ctr Ocean Res, Wischhofstr 1-3, D-24148 Kiel, Germany.
   ExxonMobil Upstream Res, 22777 Springwoods Village Pkwy, Spring, TX 77389 USA.
   Dokuz Eylul Univ, Inst Marine Sci & Technol, Haydar Aliyev Blvd 100, TR-35340 Izmir, Turkey.
   Ctr Bretagne ZI Pointe Diable, Lab Aleas Geol & Dynam Sedimentaire, CS 10070, F-29280 Plouzane, France.
   GNS Sci, 1 Fairway Dr, Avalon 5010, New Zealand.
C2 IFM GEOMAR, GERMANY
   EXXONMOBIL, USA
   UNIV DOKUZ EYLUL, TURKEY
   IFREMER, FRANCE
   GNS SCI, NEW ZEALAND
SI BREST
SE PDG-REM-GM-LAD
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 3.538
TC 23
UR https://archimer.ifremer.fr/doc/00439/55013/57803.pdf
LA English
DT Article
CR GHASS
   MD 139 / ASSEMBLAGE - 1
BO Pourquoi pas ?
   Marion Dufresne
DE ;Gas migration;Chimneys;Gas hydrate;Danube Fan;Slope failure;Black Sea
AB A large geophysical dataset, including bathymetry, and 2D and 3D P-cable seismic data, revealed evidence of numerous gas flares near the S2 Canyon in the Danube Fan, northwestern Black Sea. This dataset allows us to investigate potential relationships between gas migration pathways, gas vents observed at the seafloor and submarine slope failures. Vertical gas migration structures as revealed in the seismics appear to be concentrated near submarine slope failure structures. Where these seismically defined features extend upwards to the seafloor, they correlate with the location of gas flares. However, not all these structures reach the seafloor, in some cases because they are capped by overlying sediments. A strong correlation is inferred between gas migration pathways, heterogeneous mass transport deposits and contacts between adjacent units of contrasting lithology. Although missing age constrains prevent a final judgement, we discuss the potential relationship between submarine slope failures and gas migration in order to determine if gas migration is a precursor to failure, or if the presence of slope failures and associated mass transport deposits facilitates the migration of gas. Our observations indicate that lithological heterogeneity, mass transport deposits and minor sediment deformation control gas migration pathways and the formation of gas chimney-like features. Gas migration is focused and gradual, resulting in gas flares where the chimney-like features extend to the seafloor, with no evidence of erosive features such as pockmarks. 
PY 2018
PD APR
SO Marine And Petroleum Geology
SN 0264-8172
PU Elsevier Sci Ltd
VL 92
UT 000432760400066
BP 1069
EP 1084
DI 10.1016/j.marpetgeo.2018.03.025
ID 55013
ER

EF