Cold-seep carbonates of the middle and lower continental slope, northern Gulf of Mexico

Cold-seep carbonates of the middle and lower continental slope, northern Gulf of Mexico

Authigenic carbonates from cold seeps on the middle and lower continental slope of the northern Gulf of Mexico (GOM) exhibit a wide range of mineralogical and stable isotopic compositions. These carbonates consist of concretions and nodules in surface sediments, hardgrounds of crusts and isolated sl...

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Veröffentlicht in:Deep-sea research. Part II, Topical studies in oceanography Topical studies in oceanography, 2010-11, Vol.57 (21-23), p.2040-2054
Hauptverfasser: Roberts, Harry H., Feng, Dong, Joye, Samantha B.
Format: Artikel
Sprache:eng
Schlagworte:
Authigenic carbonate
Carbon
Carbonates
Construction
Continental slope
Fluid dynamics
Gas hydrate
Gas hydrates
Geochemistry
Gulf of Mexico
Hydrocarbons
Marine
Methane
Seep
Slabs
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Beschreibung
Zusammenfassung:Authigenic carbonates from cold seeps on the middle and lower continental slope of the northern Gulf of Mexico (GOM) exhibit a wide range of mineralogical and stable isotopic compositions. These carbonates consist of concretions and nodules in surface sediments, hardgrounds of crusts and isolated slabs, and mounded buildups of blocks and slabs of up to over 10 meters in relief above the surrounding seafloor. Mineralogically, the carbonates are dominated by high-Mg calcite (HMC) and aragonite. However, low levels (
ISSN:0967-0645
1879-0100
DOI:10.1016/j.dsr2.2010.09.003