Salters, Vincent J M; Storey, Michael; Sevigny, James H; Whitechurch, Hubert (1992): Geochemistry of Kerguelen-Heard Plateau basalts [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.758553, Supplement to: Salters, VJM et al. (1992): Trace element and isotopic characteristics of Kerguelen-Heard Plateau basalts. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 55-62, https://doi.org/10.2973/odp.proc.sr.120.116.1992
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Abstract:
During Leg 120 basalts were recovered at four drill holes on the Kerguelen-Heard Plateau. This paper reports the trace element and Sr, Nd, Hf, and Pb isotopic characteristics of these basalts and compares these basalts with Indian Ocean basalts and Kerguelen and Heard island volcanics. Kerguelen-Heard Plateau basalts are extremely heterogeneous in character. Intersite variations are larger than intrasite variations. Part of the chemical variations of the plateau volcanics overlap with those characteristics of Kerguelen Island volcanics, which indicates tapping of the same mantle source during the two different periods of activity. The estimates of the degree of melting for the plateau basalts (smaller degree of melting than for mid-ocean ridge basalts) and the heterogeneous character of the plateau exclude an origin that requires large degrees of melting or more rigorous convection than at ocean ridges. However, all characteristics indicate an oceanic origin for the Kerguelen-Heard Plateau.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -57.445450 * Median Longitude: 77.841655 * 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
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
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Salters, VJM; Storey, M; Sevigny, JH et al. (1992): (Table 2) Sr, Nd, and Pb isotopic compostion of the Kerguelen-Heard Plateau basalts. https://doi.org/10.1594/PANGAEA.758552
- Salters, VJM; Storey, M; Sevigny, JH et al. (1992): (Table 1) Trace element contents for Kerguelen-Heard Plateau basalts. https://doi.org/10.1594/PANGAEA.758551