Greetings,

For colleagues we measured some deep sea carbonates (sparite) which
showed depleted d13C values of about -60permil and below.
High methan concentrations were measured in the surrounding sediments.
I haven't dealed much with methan deposits and stable isotopes on
passive continental margins. A quick Georef check brought up a huge
stack of literature.

Does anyone have a good recent reference/review at his fingertips 
to start with?

Regards,
Robert


-- 
Dr. Robert van Geldern
Section 3: Geochronology and Isotope Hydrology
Leibniz Institute for Applied Geosciences (GGA-Institute)

GEOZENTRUM HANNOVER
Stilleweg 2
30655 Hannover, Germany

Phone: +49-(0)511-643-2313
Fax: +49-(0)511-643-3665
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