GOLDSCHMIDT CONFERENCE TOULOUSE 1998 Trace element and Sr, Nd, and Os isotopic systmatics of mafic granulite xenoliths from the Kerguelen Islands

• Main Authors: D. R. Hassler, N. Shimizu, N. Mattielli
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Broken Ridge; Indian; Kerguelen; Kerguelen Islands
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1000.108; http://www.minersoc.org/pages/Archive-MM/Volume_62A/62a-1-581.pdf

The Kerguelen hotspot became active at least 115 Ma ago, after the break-up of Gondwanaland. The Kerguelen mantle plume is responsible for extensive volcanism in the Indian Ocean basin, including the Ninetyeast Ridge, Broken Ridge and the Kerguelen Plateau, in the southern I dian Ocean (see references in, and Hassler and Shimizu, 1998 for a synopsis). The southern Kerguelen Plateau is one of the earliest known products of the Kerguelen plume (115 Ma), and the Ninetyeast Ridge tracks the northward migration of India, from>83 Ma to 43 Ma. Broken Ridge and its conjugate, the northern Kerguelen