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 …

The oldest known seep deposits with macroinvertebrate taxa are Devonian in age. Although
more and more examples continue to be discovered, the Palaeozoic and Mesozoic record of …

Obtaining carbon isotopic information for organic carbon from Martian sediments has long
been a goal of planetary science, as it has the potential to elucidate the origin of such …

An Introduction to Organic Geochemistry explores the fate of organic matter of all types,
biogenic and man-made, in the Earth System. investigates the variety of pathways and …

The serpentinite-hosted Lost City hydrothermal field is a remarkable submarine ecosystem
in which geological, chemical, and biological processes are intimately interlinked. Reactions …

Abstract Mid-water oxygen minima (0.5 mll 1 dissolved O2) intercept the continental margins
along much of the eastern Pacific Ocean, off west Africa and in the Arabian Sea and Bay of …

Microorganisms living in anoxic marine sediments consume more than 80% of the methane
produced in the world's oceans. In addition to single-species aggregates, consortia of …

Cold seeps occur in geologically active and passive continental margins, where pore waters
enriched in methane are forced upward through the sediments by pressure gradients. The …

Massive microbial mats covering up to 4-meter-high carbonate buildups prosper at methane
seeps in anoxic waters of the northwestern Black Sea shelf. Strong 13C depletions indicate …

No microorganism capable of anaerobic growth on methane as the sole carbon source has
yet been cultivated. Consequently, information about these microbes has been inferred from …