FN Archimer Export Format
PT J
TI Indian margin methane hydrate dissociation recorded in the carbon isotopes of benthic (Miliolida) foraminifera
BT 
AF Clemens, S.C.
   Thirumalai, K.
   Oppo, D.
AS 1:1;2:1,2;3:3;
FF 1:;2:;3:;
C1 Earth Environmental and Planetary Sciences, Brown University, Providence, RI, USA
   Department of Geosciences, The University of Arizona, Tucson, AZ, USA
   School of Geosciences, The University of Louisiana at Lafayette, Lafayette, LA, USA
C2 UNIV BROWN, USA
   UNIV ARIZONA, USA
   UNIV LOUISIANA LAFAYETTE, USA
IF 5.3
TC 1
UR https://archimer.ifremer.fr/doc/00828/93973/100793.pdf
   https://archimer.ifremer.fr/doc/00828/93973/100794.xlsx
LA English
DT Article
DE ;methane hydrate;Miliolida foraminifera;Pyrgo;Spiroloculina;Quinqueloculina;IODP Site U1446;Mahanadi basin;Bay of Bengal
AB Methane hydrates in ocean sediments have been investigated across various timescales using a broad array of indicators to better understand hydrate dynamics and climate linkages. Here we report individual benthic and planktonic foraminiferal isotopic analyses at three sites from distinct oceanic environments in the northern Indian Ocean. The multi-species, multi-site analyses identify a unique C response in Miliolida benthic foraminifera Pyrgo spp., Quinqueloculina spp., and Spiroloculina spp. suggesting that some species within these genera record the location and timing of past methane hydrate dissociation in the stable carbon isotopic composition of their skeletal (test) material. Our results document that dissociation occurred in the Mahanadi offshore basin, northwest Bay of Bengal, during glacial, transitional, and interglacial intervals of the past 1.5 million years. More negative test C coupled with more positive O supports the inference of interglacial-age dissociation, likely driven by increased intermediate water temperatures. 
PY 2023
PD MAY
SO Earth And Planetary Science Letters
SN 0012-821X
PU Elsevier BV
VL 609
UT 000958330900001
DI 10.1016/j.epsl.2023.118101
ID 93973
ER

EF