Title: Interaction of mantle derived melts with crust during the emplacement of the Voring Plateau, NE Atlantic
Authors: Meyer, Romain ×
Hertogen, Jan
Pedersen, Rolf B
Viereck-Goette, Lothar
Abratis, Michael #
Issue Date: Jun-2009
Publisher: Elsevier Scientific Pub. Co.
Series Title: Marine Geology vol:261 issue:1-4 pages:3-16
Abstract: Trace element and isotopic signatures of magmatic rock samples from ODP Hole 642E at the Voting Plateau provide insight into the interaction processes of mantle melt with crust during the initial magma extrusion phases at the onset of the continental breakup. The intermediate (basaltic-andesitic) to felsic (dacitic and rhyolitic) Lower Series magmas at ODP Hole 642E appear to be produced by large amounts of melting of upper crustal material. This study not only makes use of the traditional geochemical tools to investigate crust-mantle interaction, but also explores the value of Cs geochemistry as an additional tool. The element Cs forms the largest lithophile cation, and shows the largest contrast in concentration between (depleted) mantle and continental crust. As such it is a very sensitive indicator of involvement of crustal material. The Cs data reinforce the conclusion drawn from isotopic signatures that the felsic magmas are largely anatectic crustal melts. The down-hole geochemical variation within CDP Hole 642E defines a decreasing continental crustal influence from the Lower Series into the Upper Series.
ISSN: 0025-3227
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division of Geology
× corresponding author
# (joint) last author

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