Results of geological investigations of gas hydrate accumulation within the underwater sedimentary Blake Outer Ridge are presented. The study was based on both published and new data that we obtained by processing ODP 164 and 172 Legs material. The geological control over the distribution of gas hydrates is not quite clear despite the detailed seismic surveys and drilling within the study area. The geological, tectonic, and hydrogeological conditions in the Blake Outer area have been analyzed. A radically new technical approach was used: The gas hydrate accumulation was examined as a separate object with its specific characteristics. It has been proved that the investigated gas hydrates formed under the conditions of dissipated percolation of gas-containing fluids, which controlled the shape and size of the accumulation. Based on the geochemical, geophysical, and sedimentological data, regularities of gas hydrate distribution throughout the Blake Outer area have been established. The accumulation is controlled by tectonic factors; it is of filtration origin, and occurs mainly in coarse-grained sediments.
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Research Article|
July 01, 2002
GEOLOGICALLY CONTROLLED GAS HYDRATE ACCUMULATION ON THE BLAKE OUTER RIDGE, WESTERN NORTH ATLANTIC (from DSDP and ODP data)
T. V. Matveeva;
T. V. Matveeva
National Research Institute for Geology and Mineral Resources of the World Ocean, 1 Angliiskii prosp., St.Petersburg, 190121, Russia
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V. A. Soloviev
V. A. Soloviev
National Research Institute for Geology and Mineral Resources of the World Ocean, 1 Angliiskii prosp., St.Petersburg, 190121, Russia
Search for other works by this author on:
T. V. Matveeva
National Research Institute for Geology and Mineral Resources of the World Ocean, 1 Angliiskii prosp., St.Petersburg, 190121, Russia
V. A. Soloviev
National Research Institute for Geology and Mineral Resources of the World Ocean, 1 Angliiskii prosp., St.Petersburg, 190121, Russia
Publisher: Novovsibirsk State University
Received:
23 Apr 2001
First Online:
29 Oct 2022
Online ISSN: 1878-030X
Print ISSN: 1068-7971
© 2002 UIGGM, SIBERIAN BRANCH OF THE RAS
UIGGM, SIBERIAN BRANCH OF THE RAS
Russ. Geol. Geophys. (2002) 43 (7): 662–671.
Article history
Received:
23 Apr 2001
First Online:
29 Oct 2022
Citation
T. V. Matveeva, V. A. Soloviev; GEOLOGICALLY CONTROLLED GAS HYDRATE ACCUMULATION ON THE BLAKE OUTER RIDGE, WESTERN NORTH ATLANTIC (from DSDP and ODP data). Russ. Geol. Geophys. 2002;; 43 (7): 662–671. doi:
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Index Terms/Descriptors
- Atlantic Ocean
- Blake-Bahama Basin
- Blake-Bahama Outer Ridge
- chloride ion
- chlorine
- cores
- Deep Sea Drilling Project
- DSDP Site 533
- gas hydrates
- granulometry
- halogens
- IPOD
- Leg 11
- Leg 76
- Leg 164
- Leg 172
- magnetic anomalies
- marine sediments
- North Atlantic
- Northwest Atlantic
- Ocean Drilling Program
- ODP Site 994
- ODP Site 995
- ODP Site 997
- permeability
- petroleum
- petroleum accumulation
- pore water
- sediments
- sorting
- stability
- statistical analysis
- West Atlantic
Latitude & Longitude
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