Measurements of dissolved methane in the ocean have been available for only about 50
years. Methane measurements in sediments, where concentrations are millimolar, were first …

As the major biological sink of methane in marine sediments, the microbially mediated
anaerobic oxidation of methane (AOM) is crucial in its role of maintaining a sensitive …

For more than a decade I have taught a graduate-level course in marine sediment
geochemistry that covers many of the topics discussed in this book. The goal now is to …

Reviews of the sulfur cycle from a biogeochemical or microbiological perspective have
recently been presented, eg by Amend et al.(2004) and Canfield et al.(2005). The latter …

Sulfate reduction and sulfur–iron geochemistry were studied in 5–6 m deep gravity cores of
Holocene mud from Aarhus Bay (Denmark). A goal was to understand whether sulfate is …

Prominent negative δ13C excursions characterize several past intervals of abrupt (< 100
kyr) environmental change. These anomalies, best exemplified by the> 2.5‰ drop across …

The main terminal processes of organic matter mineralization in anoxic Black Sea sediments
underlying the sulfidic water column are sulfate reduction in the upper 2–4 m and …

Anaerobic oxidation of methane (AOM) and sulphate reduction were examined in sediment
samples from a marine gas hydrate area (Hydrate Ridge, NE Pacific). The sediment …

Evidence supporting a key role for anaerobic methane oxidation in the global methane cycle
is reviewed. Emphasis is on recent microbiological advances. The driving force for research …

An expanded data set for gases produced from the Antrim Shale, a Devonian black shale in
the Michigan basin, United States, has allowed for a detailed examination of the related …