Isotope geochemistry of Ninetyeast Ridge basalts

• Main Authors: Weis, Dominique A M, Frey, Frederick A
• Format: Other/Unknown Material
• Language: English
• Published: PANGAEA 1991
• Subjects: 121-756C; 121-756D; 121-757C; 121-758A; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg121; Ocean Drilling Program; ODP; South Indian Ridge; South Indian Ocean; Antarc*; Antarctic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.759538; https://doi.org/10.1594/PANGAEA.759538

The Ninetyeast Ridge lavas have Sr and Nd isotopic ratios intermediate between those of Indian Ocean MORBs and those of the very enriched Kerguelen hot spot. In an Nd-Sr isotope diagram, they also plot close to the fields of St. Paul Island lavas and of the early magmatism on Kerguelen Archipelago....