Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A
We have determined the azimuth of bottom-current flow in drift deposit sediments recovered at ODP Sites 1095 and 1101, Antarctic Peninsula, using paleomagnetic reorientation of anisotropy of magnetic susceptibility (AMS) ellipsoids. A total of 38 cores from the two ODP sites have been measured, prov...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.695831 2023-05-15T13:42:09+02:00 Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A Parés, Josep M Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A MEDIAN LATITUDE: -66.114367 * MEDIAN LONGITUDE: -75.745437 * SOUTH-BOUND LATITUDE: -66.985450 * WEST-BOUND LONGITUDE: -78.487820 * NORTH-BOUND LATITUDE: -64.372200 * EAST-BOUND LONGITUDE: -70.261180 * DATE/TIME START: 1998-02-17T16:15:00 * DATE/TIME END: 1998-03-18T10:30:00 2007-06-17 application/zip, 12 datasets https://doi.pangaea.de/10.1594/PANGAEA.695831 https://doi.org/10.1594/PANGAEA.695831 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.695831 https://doi.org/10.1594/PANGAEA.695831 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Parés, Josep M; Hassold, Noralynn J C; Rea, David K; van der Pluijm, Ben A (2007): Paleocurrent directions from paleomagnetic reorientations of magnetic fabrics in deep-sea sediments at the Antarctic Peninsula Pacific margin (ODP Sites 1095, 1101). Marine Geology, 242(4), 261-269, https://doi.org/10.1016/j.margeo.2007.04.002 178-1095A 178-1095B 178-1101A DRILL Drilling/drill rig Joides Resolution Leg178 Ocean Drilling Program ODP South Pacific Ocean Dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.695831 https://doi.org/10.1016/j.margeo.2007.04.002 2023-01-20T07:31:11Z We have determined the azimuth of bottom-current flow in drift deposit sediments recovered at ODP Sites 1095 and 1101, Antarctic Peninsula, using paleomagnetic reorientation of anisotropy of magnetic susceptibility (AMS) ellipsoids. A total of 38 cores from the two ODP sites have been measured, providing spatial and directional information on the physical record of the ACC (Antarctic Circumpolar Current) in the Plio-Pleistocene. Declination and inclination of the paleomagnetic vector of each core segment were used to reorient the AMS principal axes to the geographic coordinates. The cores were reoriented using the measured direction of the characteristic remanent magnetization (ChRM) with respect to a common reference line for the core, from which we are able to determine the orientation of the paleocurrent flow for Sites 1095 (Drift 7) and 1101 (Drift 4) relative to the geographic coordinates. Both sites have paleocurrent directions trending ~NW–SE, which in the former locality are parallel to a sediment wave field. Our study shows that a combination of magnetic fabric analysis and paleomagnetism allows deep-sea sedimentary fabric to be used as a long-term proxy of bottom-current flow history. Dataset Antarc* Antarctic Antarctic Peninsula PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Antarctic Peninsula Pacific ENVELOPE(-78.487820,-70.261180,-64.372200,-66.985450) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
178-1095A 178-1095B 178-1101A DRILL Drilling/drill rig Joides Resolution Leg178 Ocean Drilling Program ODP South Pacific Ocean |
spellingShingle |
178-1095A 178-1095B 178-1101A DRILL Drilling/drill rig Joides Resolution Leg178 Ocean Drilling Program ODP South Pacific Ocean Parés, Josep M Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A |
topic_facet |
178-1095A 178-1095B 178-1101A DRILL Drilling/drill rig Joides Resolution Leg178 Ocean Drilling Program ODP South Pacific Ocean |
description |
We have determined the azimuth of bottom-current flow in drift deposit sediments recovered at ODP Sites 1095 and 1101, Antarctic Peninsula, using paleomagnetic reorientation of anisotropy of magnetic susceptibility (AMS) ellipsoids. A total of 38 cores from the two ODP sites have been measured, providing spatial and directional information on the physical record of the ACC (Antarctic Circumpolar Current) in the Plio-Pleistocene. Declination and inclination of the paleomagnetic vector of each core segment were used to reorient the AMS principal axes to the geographic coordinates. The cores were reoriented using the measured direction of the characteristic remanent magnetization (ChRM) with respect to a common reference line for the core, from which we are able to determine the orientation of the paleocurrent flow for Sites 1095 (Drift 7) and 1101 (Drift 4) relative to the geographic coordinates. Both sites have paleocurrent directions trending ~NW–SE, which in the former locality are parallel to a sediment wave field. Our study shows that a combination of magnetic fabric analysis and paleomagnetism allows deep-sea sedimentary fabric to be used as a long-term proxy of bottom-current flow history. |
format |
Dataset |
author |
Parés, Josep M Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A |
author_facet |
Parés, Josep M Hassold, Noralynn J C Rea, David K van der Pluijm, Ben A |
author_sort |
Parés, Josep M |
title |
Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A |
title_short |
Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A |
title_full |
Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A |
title_fullStr |
Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A |
title_full_unstemmed |
Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A |
title_sort |
magnetic measurements on odp holes 178-1095a, 178-1095b and 178-1101a |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.695831 https://doi.org/10.1594/PANGAEA.695831 |
op_coverage |
MEDIAN LATITUDE: -66.114367 * MEDIAN LONGITUDE: -75.745437 * SOUTH-BOUND LATITUDE: -66.985450 * WEST-BOUND LONGITUDE: -78.487820 * NORTH-BOUND LATITUDE: -64.372200 * EAST-BOUND LONGITUDE: -70.261180 * DATE/TIME START: 1998-02-17T16:15:00 * DATE/TIME END: 1998-03-18T10:30:00 |
long_lat |
ENVELOPE(-78.487820,-70.261180,-64.372200,-66.985450) |
geographic |
Antarctic Antarctic Peninsula Pacific |
geographic_facet |
Antarctic Antarctic Peninsula Pacific |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Supplement to: Parés, Josep M; Hassold, Noralynn J C; Rea, David K; van der Pluijm, Ben A (2007): Paleocurrent directions from paleomagnetic reorientations of magnetic fabrics in deep-sea sediments at the Antarctic Peninsula Pacific margin (ODP Sites 1095, 1101). Marine Geology, 242(4), 261-269, https://doi.org/10.1016/j.margeo.2007.04.002 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.695831 https://doi.org/10.1594/PANGAEA.695831 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.695831 https://doi.org/10.1016/j.margeo.2007.04.002 |
_version_ |
1766163347317719040 |