Basin development subsequent to ridge–trench collision
The Jane Arc and Basin system is located at the eastern offshore prolongation of the Antarctic Peninsula, along the southern margin of the South Orkney Microcontinent. Three magnetic anomaly profiles orthogonal to the main tectonic and bathymetric trends were recorded during the SCAN97 cruise by the...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.383.9415 2023-05-15T13:34:09+02:00 Basin development subsequent to ridge–trench collision F. Bohoyo J. Galindo-zaldívar A. Maldonado A. A. Schreider E. Suriñach The Pennsylvania State University CiteSeerX Archives http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.9415 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.9415 Metadata may be used without restrictions as long as the oai identifier remains attached to it. text ftciteseerx 2016-09-18T00:29:06Z The Jane Arc and Basin system is located at the eastern offshore prolongation of the Antarctic Peninsula, along the southern margin of the South Orkney Microcontinent. Three magnetic anomaly profiles orthogonal to the main tectonic and bathymetric trends were recorded during the SCAN97 cruise by the Spanish R/V Hespérides. In our profiles, chron C6n (19.5 Ma) was identified as the youngest oceanic crust of the Northern Weddell Sea, whose northern spreading branch was totally subducted. The profiles from the Jane Basin allow us to date, for the first time, the age of the oceanic crust using linear sea floor magnetic anomalies. The spreading in the Jane Basin began around the age of the oldest magnetic anomaly at 17.6 Ma (chron C5Dn), and ended about 14.4 Ma (chron C5ADn). The distribution of the magnetic anomalies indicate that the mechanism responsible for the development of Jane Basin was the subduction of the Weddell Sea spreading centre below the SE margin of the South Orkney Microcontinent, suggesting a novel mechanism for an extreme case of backarc development. Text Antarc* Antarctic Antarctic Peninsula Weddell Sea Unknown Antarctic Antarctic Peninsula Jane Basin ENVELOPE(-41.909,-41.909,-61.890,-61.890) The Antarctic Weddell Weddell Sea |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
The Jane Arc and Basin system is located at the eastern offshore prolongation of the Antarctic Peninsula, along the southern margin of the South Orkney Microcontinent. Three magnetic anomaly profiles orthogonal to the main tectonic and bathymetric trends were recorded during the SCAN97 cruise by the Spanish R/V Hespérides. In our profiles, chron C6n (19.5 Ma) was identified as the youngest oceanic crust of the Northern Weddell Sea, whose northern spreading branch was totally subducted. The profiles from the Jane Basin allow us to date, for the first time, the age of the oceanic crust using linear sea floor magnetic anomalies. The spreading in the Jane Basin began around the age of the oldest magnetic anomaly at 17.6 Ma (chron C5Dn), and ended about 14.4 Ma (chron C5ADn). The distribution of the magnetic anomalies indicate that the mechanism responsible for the development of Jane Basin was the subduction of the Weddell Sea spreading centre below the SE margin of the South Orkney Microcontinent, suggesting a novel mechanism for an extreme case of backarc development. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
F. Bohoyo J. Galindo-zaldívar A. Maldonado A. A. Schreider E. Suriñach |
spellingShingle |
F. Bohoyo J. Galindo-zaldívar A. Maldonado A. A. Schreider E. Suriñach Basin development subsequent to ridge–trench collision |
author_facet |
F. Bohoyo J. Galindo-zaldívar A. Maldonado A. A. Schreider E. Suriñach |
author_sort |
F. Bohoyo |
title |
Basin development subsequent to ridge–trench collision |
title_short |
Basin development subsequent to ridge–trench collision |
title_full |
Basin development subsequent to ridge–trench collision |
title_fullStr |
Basin development subsequent to ridge–trench collision |
title_full_unstemmed |
Basin development subsequent to ridge–trench collision |
title_sort |
basin development subsequent to ridge–trench collision |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.9415 |
long_lat |
ENVELOPE(-41.909,-41.909,-61.890,-61.890) |
geographic |
Antarctic Antarctic Peninsula Jane Basin The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Peninsula Jane Basin The Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Weddell Sea |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.9415 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766049445055561728 |