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<datestamp>2018-01-11</datestamp>
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<title lang=en>Persistence of mantle lithospheric Re-Os signature during asthenospherization of the subcontinental lithospheric mantle: insights from in situ isotopic analysis of sulfides from the Ronda peridotite (Southern Spain)</title>
<creator>Marchesi, Claudio</creator>
<creator>Griffin, William L.</creator>
<creator>Garrido, Carlos J.</creator>
<creator>Bodinier, Jean-Louis</creator>
<creator>Pearson, Norman J.</creator>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>ARC National Key Centre for Geochemical Evolution and Metallogeny of Continents (GEMOC) ; Macquarie University</contributor>
<contributor>IACT, Universitad de Granada ; Université du Québec</contributor>
<description>International audience</description>
<source>ISSN: 0010-7999</source>
<source>EISSN: 1432-0967</source>
<source>Contributions to Mineralogy and Petrology</source>
<publisher>Springer Verlag</publisher>
<identifier>hal-00564508</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00564508</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00564508</source>
<source>Contributions to Mineralogy and Petrology, Springer Verlag, 2010, 159 (3), pp.315-330. 〈10.1007/s00410-009-0429-y〉</source>
<identifier>DOI : 10.1007/s00410-009-0429-y</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1007/s00410-009-0429-y</relation>
<language>en</language>
<subject lang=en>Subcontinental lithospheric mantle</subject>
<subject lang=en>Partial melting</subject>
<subject lang=en>Proterozoic</subject>
<subject lang=en>Re-Os isotopes</subject>
<subject lang=en>Sulfide</subject>
<subject lang=en>Ronda massif</subject>
<subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The western part of the Ronda peridotite massif (Southern Spain) consists mainly of highly foliated spinel-peridotite tectonites and undeformed granular peridotites that are separated by a recrystallization front. The spinel tectonites are interpreted as volumes of ancient subcontinental lithospheric mantle and the granular peridotites as a portion of subcontinental lithospheric mantle that underwent partial melting and pervasive percolation of basaltic melts induced by Cenozoic asthenospheric upwelling. The Re-Os isotopic signature of sulfides from the granular domain and the recrystallization front mostly coincides with that of grains in the spinel tectonites. This indicates that the Re-Os radiometric system in sulfides was highly resistant to partial melting and percolation of melts induced by Cenozoic lithospheric thermal erosion. The Re-Os isotopic systematics of sulfides in the Ronda peridotites thus mostly conserve the geochemical memory of ancient magmatic events in the subcontinental lithospheric mantle. Os model ages record two Proterozoic melting episodes at similar to 1.6 to 1.8 and 1.2-1.4 Ga, respectively. The emplacement of the massif into the subcontinental lithospheric mantle probably coincided with one of these depletion events. A later metasomatic episode caused the precipitation of a new generation of sulfides at similar to 0.7 to 0.9 Ga. These Proterozoic Os model ages are consistent with results obtained for several mantle suites in Central/Western Europe and Northern Africa as well as with the Nd model ages of the continental crust of these regions. This suggests that the events recorded in mantle sulfides of the Ronda peridotites reflect different stages of generation of the continental crust in the ancient Gondwana supercontinent.</description>
<date>2010</date>
</dc>
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