Unknown
PANGAEA
In:
Supplement to: Smith, Terence E; Huang, C H; Sajona, F G (1991): Geochemistry and petrogenesis of basalts from Holes 767C, 770B, and 770C, Celebes Sea. In: Silver, EA; Rangin, C; von Breymann, MT; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 124, 311-320, https://doi.org/10.2973/odp.proc.sr.124.161.1991
Publication Date:
2024-01-09
Description:
Major-, trace-, and rare-earth element analyses are presented from a suite of basaltic rocks from the basement of the Celebes Sea. The major elements and trace-elements were determined by X-ray fluorescence techniques, and the rare-earth elements were analyzed by instrumental neutron activation analysis. Compositionally the Celebes Sea basalts are very similar to typical normal mid-ocean ridge basalts, such as those described from the Indian Ocean triple junction. Petrogenetic modeling shows that all of the basalts analyzed can be formed by 10% to 20% partial melting of a light rare-earth element-depleted spinel lherzolite followed by fractional crystallization of mixtures of olivine, Plagioclase, and iron oxide. The Celebes Sea is interpreted as a fragment of the basement of the Jurassic Argo abyssal plain trapped during the Eocene to the north of Australia.
Keywords:
124-767C; 124-770; 124-770B; 124-770C; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg124; Mindanao Sea; Ocean Drilling Program; ODP
Type:
Dataset
Format:
application/zip, 3 datasets
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