Influence of the Amsterdam/St. Paul hot spot along the Southeast Indian Ridge between 77° and 88°E: Correlations of Sr, Nd, Pb, and He isotopic variations with ridge segmentation

• Main Authors: Nicolaysen, K. P., Frey, F. A., Mahoney, J. J., Johnson, K. T. M., Graham, David W.
• Other Authors: College of Oceanic and Atmospheric Sciences
• Format: Article in Journal/Newspaper
• Language: English; unknown
• Published: American Geophysical Union
• Subjects: Paul Islands
• Online Access: https://ir.library.oregonstate.edu/concern/articles/cc08hm597

The submarine Amsterdam-St. Paul (ASP) Plateau, bisected by the Southeast Indian Ridge (SEIR), is a bathymetric high rising ~2 km above the surrounding seafloor that includes the islands of Amsterdam and St. Paul; this excess volcanism is attributed to a mantle hot spot. We obtained new Sr, Nd, and...