Published September 30, 2013 | Version v1
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Proceedings of the Integrated Ocean Drilling Program 337: Deep Coalbed Biosphere off Shimokita

Description

Integrated Ocean Drilling Program (IODP) Expedition 337 was the first expedition dedicated to subseafloor microbiology that used riser drilling technology. The site examined during this expedition (Site C0020) is located off the Shimokita Peninsula, Japan, at a water depth of 1180 m in a forearc basin formed by the subduction of the Pacific plate under the Okhotsk plate. Previously conducted seismic profiles suggested the presence of deep, coal-bearing horizons at ~2 km below the seafloor. Our primary scientific objectives during Expedition 337 were thus to study the relationship between these deep coalbeds and carbon cycling, as well as to explore the distribution of subseafloor life at the greatest depths that have ever been sampled by scientific ocean drilling. A key question that guided our research strategy was “Do deeply buried hydrocarbon reservoirs, such as coalbeds, act as geobiological reactors that sustain subseafloor life by releasing nutrients and carbon substrates?”

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Additional details

Identifiers

DOI
10.2204/iodp.proc.337.2013
ISBN
978-1-954252-30-1
ISSN
1930-1014