Paleomagnetic of basalts from the Kerguelen Plateau
Paleomagnetic measurements were performed on 106 basalt samples collected from Holes 747C, 748C, 749C, and 750B. Basalt samples were recovered from the southern portion of the Kerguelen Plateau and the transitional zone between the northern and southern plateau in the south central Indian Ocean. The...
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1992
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.760162 2024-09-15T17:44:16+00:00 Paleomagnetic of basalts from the Kerguelen Plateau Inokuchi, Hiroo Heider, Franz MEDIAN LATITUDE: -57.390250 * MEDIAN LONGITUDE: 78.359775 * SOUTH-BOUND LATITUDE: -58.717000 * WEST-BOUND LONGITUDE: 76.407500 * NORTH-BOUND LATITUDE: -54.811000 * EAST-BOUND LONGITUDE: 81.239500 * DATE/TIME START: 1988-03-09T06:45:00 * DATE/TIME END: 1988-04-23T04:00:00 * MINIMUM ELEVATION: -2041.0 m * MAXIMUM ELEVATION: -1080.0 m 1992 text/tab-separated-values, 612 data points https://doi.pangaea.de/10.1594/PANGAEA.760162 https://doi.org/10.1594/PANGAEA.760162 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.760162 https://doi.org/10.1594/PANGAEA.760162 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Inokuchi, Hiroo; Heider, Franz (1992): Paleolatitude of the southern Kerguelen Plateau inferred from the paleomagnetic study of late Cretaceous basalts. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 89-96, https://doi.org/10.2973/odp.proc.sr.120.129.1992 120-747C 120-748C 120-749C 120-750B Demagnetization step Demag Type DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg120 NRM Inclination Inclination after demagnetization Intensity Ocean Drilling Program ODP Sample code/label South Indian Ridge South Indian Ocean dataset 1992 ftpangaea https://doi.org/10.1594/PANGAEA.76016210.2973/odp.proc.sr.120.129.1992 2024-07-24T02:31:31Z Paleomagnetic measurements were performed on 106 basalt samples collected from Holes 747C, 748C, 749C, and 750B. Basalt samples were recovered from the southern portion of the Kerguelen Plateau and the transitional zone between the northern and southern plateau in the south central Indian Ocean. The ages of basalts range from 100 to 115 Ma. In addition to the preliminary shipboard measurements (Schlich, Wise, et al., 1989, doi:10.2973/odp.proc.ir.120.1989), characteristic inclinations of the magnetization were obtained using mainly stepwise thermal demagnetization of the samples. Reliable paleomagnetic results were obtained from three sites (Sites 747, 748, and 749). The paleomagnetic inclinations of Sites 747, 748, and 749 are -51°, -63°, and -62°, respectively. The considerable differences between the paleomagnetic and present inclinations of about 70° at Sites 747, 748, and 749 indicate that displacement in the direction of the geomagnetic meridian has taken place since formation of the basalt. Shallower paleomagnetic inclinations than the present inclinations at each site imply a southward movement of the sites with respect to the geomagnetic pole. By comparing the apparent polar wander path of Antarctica with the virtual geomagnetic pole (VGP) of the Southern Kerguelen Plateau, we have concluded that no major tectonic movement has taken place between the Kerguelen Plateau and Antarctica since formation of the basalt (i.e., 100-115 Ma). The angular dispersion of the VGP for the Kerguelen Plateau is calculated as 17°. Dataset Antarc* Antarctica Geomagnetic Pole PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(76.407500,81.239500,-54.811000,-58.717000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
120-747C 120-748C 120-749C 120-750B Demagnetization step Demag Type DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg120 NRM Inclination Inclination after demagnetization Intensity Ocean Drilling Program ODP Sample code/label South Indian Ridge South Indian Ocean |
spellingShingle |
120-747C 120-748C 120-749C 120-750B Demagnetization step Demag Type DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg120 NRM Inclination Inclination after demagnetization Intensity Ocean Drilling Program ODP Sample code/label South Indian Ridge South Indian Ocean Inokuchi, Hiroo Heider, Franz Paleomagnetic of basalts from the Kerguelen Plateau |
topic_facet |
120-747C 120-748C 120-749C 120-750B Demagnetization step Demag Type DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Event label Joides Resolution Leg120 NRM Inclination Inclination after demagnetization Intensity Ocean Drilling Program ODP Sample code/label South Indian Ridge South Indian Ocean |
description |
Paleomagnetic measurements were performed on 106 basalt samples collected from Holes 747C, 748C, 749C, and 750B. Basalt samples were recovered from the southern portion of the Kerguelen Plateau and the transitional zone between the northern and southern plateau in the south central Indian Ocean. The ages of basalts range from 100 to 115 Ma. In addition to the preliminary shipboard measurements (Schlich, Wise, et al., 1989, doi:10.2973/odp.proc.ir.120.1989), characteristic inclinations of the magnetization were obtained using mainly stepwise thermal demagnetization of the samples. Reliable paleomagnetic results were obtained from three sites (Sites 747, 748, and 749). The paleomagnetic inclinations of Sites 747, 748, and 749 are -51°, -63°, and -62°, respectively. The considerable differences between the paleomagnetic and present inclinations of about 70° at Sites 747, 748, and 749 indicate that displacement in the direction of the geomagnetic meridian has taken place since formation of the basalt. Shallower paleomagnetic inclinations than the present inclinations at each site imply a southward movement of the sites with respect to the geomagnetic pole. By comparing the apparent polar wander path of Antarctica with the virtual geomagnetic pole (VGP) of the Southern Kerguelen Plateau, we have concluded that no major tectonic movement has taken place between the Kerguelen Plateau and Antarctica since formation of the basalt (i.e., 100-115 Ma). The angular dispersion of the VGP for the Kerguelen Plateau is calculated as 17°. |
format |
Dataset |
author |
Inokuchi, Hiroo Heider, Franz |
author_facet |
Inokuchi, Hiroo Heider, Franz |
author_sort |
Inokuchi, Hiroo |
title |
Paleomagnetic of basalts from the Kerguelen Plateau |
title_short |
Paleomagnetic of basalts from the Kerguelen Plateau |
title_full |
Paleomagnetic of basalts from the Kerguelen Plateau |
title_fullStr |
Paleomagnetic of basalts from the Kerguelen Plateau |
title_full_unstemmed |
Paleomagnetic of basalts from the Kerguelen Plateau |
title_sort |
paleomagnetic of basalts from the kerguelen plateau |
publisher |
PANGAEA |
publishDate |
1992 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.760162 https://doi.org/10.1594/PANGAEA.760162 |
op_coverage |
MEDIAN LATITUDE: -57.390250 * MEDIAN LONGITUDE: 78.359775 * SOUTH-BOUND LATITUDE: -58.717000 * WEST-BOUND LONGITUDE: 76.407500 * NORTH-BOUND LATITUDE: -54.811000 * EAST-BOUND LONGITUDE: 81.239500 * DATE/TIME START: 1988-03-09T06:45:00 * DATE/TIME END: 1988-04-23T04:00:00 * MINIMUM ELEVATION: -2041.0 m * MAXIMUM ELEVATION: -1080.0 m |
long_lat |
ENVELOPE(76.407500,81.239500,-54.811000,-58.717000) |
genre |
Antarc* Antarctica Geomagnetic Pole |
genre_facet |
Antarc* Antarctica Geomagnetic Pole |
op_source |
Supplement to: Inokuchi, Hiroo; Heider, Franz (1992): Paleolatitude of the southern Kerguelen Plateau inferred from the paleomagnetic study of late Cretaceous basalts. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 89-96, https://doi.org/10.2973/odp.proc.sr.120.129.1992 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.760162 https://doi.org/10.1594/PANGAEA.760162 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.76016210.2973/odp.proc.sr.120.129.1992 |
_version_ |
1810491692468404224 |