Saunders, Andrew D (1987): Geochemistry of DSDP Leg 91 basalts. PANGAEA, https://doi.org/10.1594/PANGAEA.802521, Supplement to: Saunders, AD (1987): Geochemistry of basalts from Mesozoic Pacific Ocean crust: Deep Sea Drilling Project Leg 91. In: Menard, HW; Natland, J; Jordan, TH; Orcutt, JA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 91, 483-494, https://doi.org/10.2973/dsdp.proc.91.115.1987
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Basalts recovered from Sites 595 and 596 on Mesozoic crust in the southwest Pacific range from olivine-bearing tholeiites to ferrobasalts. Despite having undergone extensive low-grade alteration, which has raised K and Rb abundances, the basalts have consistent interelement ratios of Ti, Zr, Hf, rare-earth elements, Y, Th, Ik, and Nb. La/Ta (-18), Lan/Ybn (0.6), Ti/Zr (115), Zr/Nb (20), and Th/Hf (0.08) ratios all fall within the range of N-type mid-ocean-ridge basalt. The basalts from Sites 595 and 596 indicate that the Mesozoic Pacific crust was derived from a mantle source by processes similar to those operating at the present-day East Pacific Rise.
Median Latitude: -15.331844 * Median Longitude: -163.166708 * South-bound Latitude: -23.853300 * West-bound Longitude: 159.796200 * North-bound Latitude: 43.927700 * East-bound Longitude: -81.904000
Date/Time Start: 1974-01-05T00:00:00 * Date/Time End: 1983-02-12T00:00:00
Datasets listed in this publication series
- Saunders, AD (1987): (Table 2) Major element analyses of representative Leg 91 basalts. https://doi.org/10.1594/PANGAEA.262604
- Saunders, AD (2005): (Table 3) Minor and trace element composition of DSDP Leg 91 basalts. https://doi.org/10.1594/PANGAEA.263404
- Saunders, AD (1987): (Table 4) Trace element analyses of ODP Site 91-595 baslats. https://doi.org/10.1594/PANGAEA.263405
- Saunders, AD (1987): (Table 5) Analyses of representative tholeiites and tholeiitic ferrobasalts ofthe Pacific Ocean. https://doi.org/10.1594/PANGAEA.263406