CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe)
About 57% of the Earth's outer surface is oceanic crust and new ocean floor is continuously created along the 55,000-60,000 km long mid-ocean ridge (MOR) system. About 25% of MORs spread at an ultra-slow spreading rate of < 20 mm/yr. Most ultra-slow spreading ridges occur in areas of the wor...
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ftdatacite:10.2312/cr_m115 2023-05-15T15:13:37+02:00 CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) Grevemeyer, Ingo Dannowski, Anke Hayman, Nicholas Peirce, Christine Van Avendonk, Harm 2016 application/pdf https://dx.doi.org/10.2312/cr_m115 https://www.tib.eu/suchen/id/awi:b99d82040bd8d789ebfacb662bef633fc7b32c92 en eng DFG-Senatskommission für Ozeanographie DFG-Senatskommission für Ozeanographie Earth Science Earth sciences and geology report Electronic Resource Report 2016 ftdatacite https://doi.org/10.2312/cr_m115 2022-04-01T17:57:47Z About 57% of the Earth's outer surface is oceanic crust and new ocean floor is continuously created along the 55,000-60,000 km long mid-ocean ridge (MOR) system. About 25% of MORs spread at an ultra-slow spreading rate of < 20 mm/yr. Most ultra-slow spreading ridges occur in areas of the world that are difficult to reach, like the Gakkel Ridge in the Arctic Ocean and the Southwest Indian Ridge in the Indian Ocean. It has long been recognized that crustal accretion at ultra-slow spreading rates is fundamentally different from crust generated at faster spreading rates. However, due to the remoteness of ultra-slow ridges, the formation of crust at these magma-starved centres is yet not well understood. During the CAYSEIS cruise we surveyed lithospheric formation at ultra-slow spreading rates at the Mid-Cayman spreading centre (MCSC) in the Caribbean Sea, where oceanic crust is formed at a full rate of ~17 mm/yr. To the northeast and southwest, the MCSC is bound by two major transform faults. Using active-source wide-angle seismic imaging and passive local earthquake monitoring we, studied the balance between magmatic accretion and tectonic stretching (and hence oceanic core complex formation) and the relationship between faulting and hydrothermal activity at ultra-slow spreading rates. In addition, we explored transform margin formation at a unique setting, occurring at the southern terminus of the MCSC. In total, six seismic lines surveyed crust formed at the MCSC, two of these profiles also crossed the Swan Island transform fault. The project was a collaboration between German, British and American scientists. : METEOR-Berichte Report Arctic Arctic Ocean DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Indian Swan Island ENVELOPE(-92.033,-92.033,62.834,62.834) |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Earth Science Earth sciences and geology |
spellingShingle |
Earth Science Earth sciences and geology Grevemeyer, Ingo Dannowski, Anke Hayman, Nicholas Peirce, Christine Van Avendonk, Harm CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) |
topic_facet |
Earth Science Earth sciences and geology |
description |
About 57% of the Earth's outer surface is oceanic crust and new ocean floor is continuously created along the 55,000-60,000 km long mid-ocean ridge (MOR) system. About 25% of MORs spread at an ultra-slow spreading rate of < 20 mm/yr. Most ultra-slow spreading ridges occur in areas of the world that are difficult to reach, like the Gakkel Ridge in the Arctic Ocean and the Southwest Indian Ridge in the Indian Ocean. It has long been recognized that crustal accretion at ultra-slow spreading rates is fundamentally different from crust generated at faster spreading rates. However, due to the remoteness of ultra-slow ridges, the formation of crust at these magma-starved centres is yet not well understood. During the CAYSEIS cruise we surveyed lithospheric formation at ultra-slow spreading rates at the Mid-Cayman spreading centre (MCSC) in the Caribbean Sea, where oceanic crust is formed at a full rate of ~17 mm/yr. To the northeast and southwest, the MCSC is bound by two major transform faults. Using active-source wide-angle seismic imaging and passive local earthquake monitoring we, studied the balance between magmatic accretion and tectonic stretching (and hence oceanic core complex formation) and the relationship between faulting and hydrothermal activity at ultra-slow spreading rates. In addition, we explored transform margin formation at a unique setting, occurring at the southern terminus of the MCSC. In total, six seismic lines surveyed crust formed at the MCSC, two of these profiles also crossed the Swan Island transform fault. The project was a collaboration between German, British and American scientists. : METEOR-Berichte |
format |
Report |
author |
Grevemeyer, Ingo Dannowski, Anke Hayman, Nicholas Peirce, Christine Van Avendonk, Harm |
author_facet |
Grevemeyer, Ingo Dannowski, Anke Hayman, Nicholas Peirce, Christine Van Avendonk, Harm |
author_sort |
Grevemeyer, Ingo |
title |
CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) |
title_short |
CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) |
title_full |
CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) |
title_fullStr |
CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) |
title_full_unstemmed |
CAYSEIS - magma-starved oceanic crustal accretion and transform margin formation in the Cayman Trough revealed by seismic and seismological data - Cruise No. M115 - April 1 - April 28, 2015 - Kingston (Jamaica) - Pointe-à-Pitre (Guadeloupe) |
title_sort |
cayseis - magma-starved oceanic crustal accretion and transform margin formation in the cayman trough revealed by seismic and seismological data - cruise no. m115 - april 1 - april 28, 2015 - kingston (jamaica) - pointe-à-pitre (guadeloupe) |
publisher |
DFG-Senatskommission für Ozeanographie |
publishDate |
2016 |
url |
https://dx.doi.org/10.2312/cr_m115 https://www.tib.eu/suchen/id/awi:b99d82040bd8d789ebfacb662bef633fc7b32c92 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(-92.033,-92.033,62.834,62.834) |
geographic |
Arctic Arctic Ocean Gakkel Ridge Indian Swan Island |
geographic_facet |
Arctic Arctic Ocean Gakkel Ridge Indian Swan Island |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_rights |
DFG-Senatskommission für Ozeanographie |
op_doi |
https://doi.org/10.2312/cr_m115 |
_version_ |
1766344154613284864 |