Inokuchi, Hiroo; Heider, Franz (1992): Paleomagnetic of basalts from the Kerguelen Plateau [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.760162, Supplement to: Inokuchi, H; Heider, F (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
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Abstract:
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°.
Project(s):
Ocean Drilling Program (ODP)
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
Event(s):
120-747C * Latitude: -54.811000 * Longitude: 76.794000 * Date/Time Start: 1988-03-09T06:45:00 * Date/Time End: 1988-03-12T17:00:00 * Elevation: -1706.0 m * Penetration: 350.5 m * Recovery: 49.5 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 144.5 m cored; 0 m drilled; 34.3 % recovery
120-748C * Latitude: -58.441000 * Longitude: 78.998100 * Date/Time Start: 1988-03-15T11:00:00 * Date/Time End: 1988-03-23T22:54:00 * Elevation: -1301.0 m * Penetration: 935 m * Recovery: 185.88 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 87 cores; 760 m cored; 0 m drilled; 24.5 % recovery
120-749C * Latitude: -58.717000 * Longitude: 76.407500 * Date/Time Start: 1988-03-25T09:45:00 * Date/Time End: 1988-03-28T01:00:00 * Elevation: -1080.0 m * Penetration: 249.5 m * Recovery: 29.92 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 147.5 m cored; 0 m drilled; 20.3 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Inokuchi, Hiroo | DSDP/ODP/IODP sample designation | ||
| 3 | NRM, Inclination | Incl (NRM) | deg | Inokuchi, Hiroo | ||
| 4 | NRM, Intensity | Inten (NRM) | mA/m | Inokuchi, Hiroo | ||
| 5 | Demag Type | Demag Type | Inokuchi, Hiroo | |||
| 6 | Demagnetization step | Demag step | mT | Inokuchi, Hiroo | range, minimum | |
| 7 | Demagnetization step | Demag step | mT | Inokuchi, Hiroo | range, maximum | |
| 8 | NRM, Inclination after demagnetization | Incl (AF) | deg | Inokuchi, Hiroo | range, minimum | |
| 9 | NRM, Inclination after demagnetization | Incl (AF) | deg | Inokuchi, Hiroo | range, maximum |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
612 data points