Diagenetically altered benthic foraminifera reveal paleo-methane seepage

Carbon and oxygen stable isotopic composition of benthic foraminifera calcite tests and carbonate nodules recovered from gravity core HH-13-203. Sections shaded in light

We present a classi fi cation of visual and mineralogical characteristics of the exterior and interior test wall microstructure of the benthic foraminiferal species

living benthic foraminifera to pore water carbon isotope anomalies in methane vent

Several different methods were used to study these cores (x-ray, magnetic susceptibility, picking of foraminifera, and planktonic foraminiferal stable isotope analysis) in order to

benthic foraminifera from a methane seep site on Vestnesa Ridge (NW Svalbard). Schneider A., 330. Diagenetically altered benthic foraminifera reveal paleo-methane seepage..

To test our hypothesis, we carried out in-situ sediment pore-pressure and temperature measurements over 4 days on a widely investigated methane seepage system in the Arctic,

The MILS data collected 15 meters above seafloor along line 3 and near the vertical MILS-cast (1616), does not reveal the high concentrations (~200 nmol/L) measured during

fauna suggests that shallow subseafloor diagenesis and seafloor methane seepage at Vestnesa Ridge 792. may respond to long-term changes in Earth system processes rather than to