Insights into the temporal and geochemical evolution of the Walvis Ridge - A connection between HIMU and EM I end members in the South Atlantic.

Homrighausen, Stephan (2018) Insights into the temporal and geochemical evolution of the Walvis Ridge - A connection between HIMU and EM I end members in the South Atlantic. Open Access (PhD/ Doctoral thesis), Christian-Albrechts-Universität Kiel, Kiel, 39 pp.

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Abstract

The Walvis Ridge, located in the South Atlantic, represents the oldest submarine expression the Tristan-Gough seamount chain, which extends from the Namibian coast to the active volcanic islands of Tristanda Cunha and Gough. As a reference locality of the EMI end member (enriched mantle one) and a type locality of the classical mantle plume concept, the poorly sampled Walvis Ridge represents an excellent opportunity to examine fundamental geological concepts. To provide further insights into the origin and evolution of the Tristan-Gough seamount chain, my PhD thesis presents a comprehensive geochemical (major and trace elements and Sr-Nd-Pb-Hf isotopes) and geochronological data set ( 40 Ar/ 39 Ar data) of 35 new sample sites from the Walvis Ridge.

Document Type: Thesis (PhD/ Doctoral thesis)
Thesis Advisor: Hoernle, Kaj and Devey, Colin
Additional Information: Kumulative Dissertation
Keywords: Walvis Ridge, South Atlantic, geochemical signature, Tristan, Gough
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems
Expeditions/Models/Experiments:
Date Deposited: 21 Jun 2018 12:35
Last Modified: 01 Feb 2019 15:12
URI: http://oceanrep.geomar.de/id/eprint/43473

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