FN Archimer Export Format
PT J
TI Gas hydrate distributions in sediments of pockmarks from the Nigerian Margin - Results and interpretation from shallow drilling
BT 
AF WEI, Jiangong
   PAPE, Thomas
   SULTAN, Nabil
   COLLIAT, Jean-Louis
   HIMMLER, Tobias
   RUFFINE, Livio
   DE PRUNELE, Alexis
   DENNIELOU, Bernard
   GARZIGLIA, Sebastien
   MARSSET, Tania
   PETERS, Carl A.
   RABIU, Abdulkarim
   BOHRMANN, Gerhard
AS 1:1;2:1;3:2;4:3;5:1,2;6:2;7:2;8:2;9:2;10:2;11:1,5;12:4;13:1;
FF 1:;2:;3:PDG-REM-GM-LES;4:;5:PDG-REM-GM-LGM;6:PDG-REM-GM-LGM;7:PDG-REM-GM-LGM;8:PDG-REM-GM-LES;9:PDG-REM-GM-LES;10:PDG-REM-GM-LES;11:;12:;13:;
C1 Univ Bremen, MARUM, D-28359 Bremen, Germany.
   IFREMER, Dept REM, Unite Geosci Marines, F-29280 Plouzane, France.
   TOTAL, Pau, France.
   Nigeria Inst Oceanog & Marine Res, Lagos, Nigeria.
   Macquarie Univ, Dept Earth & Planetary Sci, Sydney, NSW 2109, Australia.
C2 UNIV BREMEN MARUM, GERMANY
   IFREMER, FRANCE
   TOTAL, FRANCE
   NIGERIA INST OCEANOG & MARINE RES, NIGERIA
   UNIV MACQUARIE, AUSTRALIA
SI BREST
SE PDG-REM-GM-LES
   PDG-REM-GM-LGM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 2.788
TC 49
UR https://archimer.ifremer.fr/doc/00213/32382/30846.pdf
LA English
DT Article
CR GUINECO-MEBO
BO Pourquoi pas ?
DE ;Gas hydrate;Pockmark;Chloride profile;Infrared thermal imaging;Fluid flow;Nigerian continental margin;MeBo drill rig
AB A joint research expedition between the French IFREMER and the German MARUM was conducted in 2011 using the R/V Pourquoi pas? to study gas hydrate distributions in a pockmark field (1141 – 1199 meters below sea surface) at the continental margin of Nigeria. The sea floor drill rig MeBo of MARUM was used to recover sediments as deep as 56.74 meters below seafloor. The presence of gas hydrates in specific core sections was deduced from temperature anomalies recorded during continuous records of infrared thermal scanning and anomalies in pore water chloride concentrations. In situ sediment temperature measurements showed elevated geothermal gradients of up to 258 °C/km in the center of the so-called pockmark A which is up to 4.6 times higher than that in the background sediment (72 °C/km). The gas hydrate distribution and thermal regime in the pockmark are largely controlled by the intensity, periodicity and direction of fluid flow. The joint interaction between fluid flow, gas hydrate formation and dissolution, and the thermal regime governs pockmark formation and evolution on the Nigerian continental margin.
PY 2015
PD JAN
SO Marine And Petroleum Geology
SN 0264-8172
PU Elsevier Sci Ltd
VL 59
UT 000347584000024
BP 359
EP 370
DI 10.1016/j.marpetgeo.2014.09.013
ID 32382
ER

EF