Geophysical indications of gas hydrate occurrence on the Greenland continental margins
The glaciated Greenland continental margins contain favorable conditions for hydrate formation if gas is present. No gas hydrates have been encountered in the drilling of offshore wells, however, and only a limited focus has been placed on academic-led hydrate research to date. Nevertheless, analyse...
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ftawi:oai:epic.awi.de:56884 2023-05-15T16:18:07+02:00 Geophysical indications of gas hydrate occurrence on the Greenland continental margins Nielsen, Tove Cox, D.R. Jokat, Wilfried 2022-01 application/pdf https://epic.awi.de/id/eprint/56884/ https://epic.awi.de/id/eprint/56884/1/Nielsen-2022-book-GashydratesGreenland.pdf https://hdl.handle.net/10013/epic.4dc8a6af-ba2b-48c5-b7b5-9f25bd585ece https://hdl.handle.net/ unknown Springer https://epic.awi.de/id/eprint/56884/1/Nielsen-2022-book-GashydratesGreenland.pdf https://hdl.handle.net/ Nielsen, T. , Cox, D. and Jokat, W. orcid:0000-0002-7793-5854 (2022) Geophysical indications of gas hydrate occurrence on the Greenland continental margins , In: World Atlas of Submarine Gas Hydrates in Continental Margins, World Atlas of Submarine Gas Hydrates in Continental Margins, Springer, 514 p. . doi:10.1007/978-3-030-81186-0_22 <https://doi.org/10.1007/978-3-030-81186-0_22> , hdl:10013/epic.4dc8a6af-ba2b-48c5-b7b5-9f25bd585ece EPIC3World Atlas of Submarine Gas Hydrates in Continental Margins, World Atlas of Submarine Gas Hydrates in Continental Margins, Springer, 514 p., pp. 263-273 Inbook NonPeerReviewed 2022 ftawi https://doi.org/10.1007/978-3-030-81186-0_22 2022-09-04T23:12:30Z The glaciated Greenland continental margins contain favorable conditions for hydrate formation if gas is present. No gas hydrates have been encountered in the drilling of offshore wells, however, and only a limited focus has been placed on academic-led hydrate research to date. Nevertheless, analyses of 2D and 3D seismic reflection data have revealed the occurrence of BSRs, DHIs, chimneys and pockmarks. These seismic features all suggest the presence of gas and gas hydrates within three different sections of the Greenland margin. Seismic amplitude observations in Melville Bay, offshore northwest Greenland, indicate the existence of a *220 m thick gas hydrate deposit over a 50 m high gas column. It is suggested that the paleo-topography of the area has forced the migration of fluid into the overlying stratigraphy. In the Disco area, offshore central West Greenland, seismic observations together with heatflow measurements and sediment core samples suggest that gas and gas hydrates exist in regions with sub-cropping Cretaceous to Paleocene strata and in areas covered by thick postglacial sediments. Finally, 2D seismic reflection data indicate gas and gas hydrate deposits of potentially abiotic origin within the northeast Greenland margin and Molloy Basin, adjacent to the ocean spreading systems in the Fram Strait. Book Part Fram Strait Greenland Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Greenland Molloy ENVELOPE(70.065,70.065,-49.360,-49.360) 263 273 Cham |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The glaciated Greenland continental margins contain favorable conditions for hydrate formation if gas is present. No gas hydrates have been encountered in the drilling of offshore wells, however, and only a limited focus has been placed on academic-led hydrate research to date. Nevertheless, analyses of 2D and 3D seismic reflection data have revealed the occurrence of BSRs, DHIs, chimneys and pockmarks. These seismic features all suggest the presence of gas and gas hydrates within three different sections of the Greenland margin. Seismic amplitude observations in Melville Bay, offshore northwest Greenland, indicate the existence of a *220 m thick gas hydrate deposit over a 50 m high gas column. It is suggested that the paleo-topography of the area has forced the migration of fluid into the overlying stratigraphy. In the Disco area, offshore central West Greenland, seismic observations together with heatflow measurements and sediment core samples suggest that gas and gas hydrates exist in regions with sub-cropping Cretaceous to Paleocene strata and in areas covered by thick postglacial sediments. Finally, 2D seismic reflection data indicate gas and gas hydrate deposits of potentially abiotic origin within the northeast Greenland margin and Molloy Basin, adjacent to the ocean spreading systems in the Fram Strait. |
format |
Book Part |
author |
Nielsen, Tove Cox, D.R. Jokat, Wilfried |
spellingShingle |
Nielsen, Tove Cox, D.R. Jokat, Wilfried Geophysical indications of gas hydrate occurrence on the Greenland continental margins |
author_facet |
Nielsen, Tove Cox, D.R. Jokat, Wilfried |
author_sort |
Nielsen, Tove |
title |
Geophysical indications of gas hydrate occurrence on the Greenland continental margins |
title_short |
Geophysical indications of gas hydrate occurrence on the Greenland continental margins |
title_full |
Geophysical indications of gas hydrate occurrence on the Greenland continental margins |
title_fullStr |
Geophysical indications of gas hydrate occurrence on the Greenland continental margins |
title_full_unstemmed |
Geophysical indications of gas hydrate occurrence on the Greenland continental margins |
title_sort |
geophysical indications of gas hydrate occurrence on the greenland continental margins |
publisher |
Springer |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/56884/ https://epic.awi.de/id/eprint/56884/1/Nielsen-2022-book-GashydratesGreenland.pdf https://hdl.handle.net/10013/epic.4dc8a6af-ba2b-48c5-b7b5-9f25bd585ece https://hdl.handle.net/ |
long_lat |
ENVELOPE(70.065,70.065,-49.360,-49.360) |
geographic |
Greenland Molloy |
geographic_facet |
Greenland Molloy |
genre |
Fram Strait Greenland |
genre_facet |
Fram Strait Greenland |
op_source |
EPIC3World Atlas of Submarine Gas Hydrates in Continental Margins, World Atlas of Submarine Gas Hydrates in Continental Margins, Springer, 514 p., pp. 263-273 |
op_relation |
https://epic.awi.de/id/eprint/56884/1/Nielsen-2022-book-GashydratesGreenland.pdf https://hdl.handle.net/ Nielsen, T. , Cox, D. and Jokat, W. orcid:0000-0002-7793-5854 (2022) Geophysical indications of gas hydrate occurrence on the Greenland continental margins , In: World Atlas of Submarine Gas Hydrates in Continental Margins, World Atlas of Submarine Gas Hydrates in Continental Margins, Springer, 514 p. . doi:10.1007/978-3-030-81186-0_22 <https://doi.org/10.1007/978-3-030-81186-0_22> , hdl:10013/epic.4dc8a6af-ba2b-48c5-b7b5-9f25bd585ece |
op_doi |
https://doi.org/10.1007/978-3-030-81186-0_22 |
container_start_page |
263 |
op_container_end_page |
273 |
op_publisher_place |
Cham |
_version_ |
1766004236950175744 |