Geochemistry of DSDP Leg 91 basalts
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PANGAEA
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| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
1987
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| _version_ | 1867170464367902720 |
|---|---|
| author | Saunders, Andrew D |
| author_facet | Saunders, Andrew D |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_802521 |
| institution | PANGAEA |
| language | en |
| publishDate | 1987 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry of DSDP Leg 91 basalts Saunders, Andrew D Deep Sea Drilling Project; DSDP 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. |
| title | Geochemistry of DSDP Leg 91 basalts |
| topic | Deep Sea Drilling Project; DSDP |
| url | https://doi.org/10.1594/PANGAEA.802521 |