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<identifier>oai:HAL:hal-00424515v1</identifier>
<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Magma and fluid percolation in arc to forearc mantle: Evidence from Sapat (Kohistan, Northern Pakistan)</title>
<creator>Bouilhol, P.</creator>
<creator>Burg, J. P.</creator>
<creator>Bodinier, Jean-Louis</creator>
<creator>Schmidt, M. W.</creator>
<creator>Dawood, H.</creator>
<creator>Hussain, S.</creator>
<contributor>Department of Earth Sciences [Zürich] ; Eidgenössische Technische Hochschule [Zürich] (ETH Zürich)</contributor>
<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>Pakistan Museum of Natural History, Islamabad ; Université du Québec</contributor>
<description>International audience</description>
<source>ISSN: 0024-4937</source>
<source>Lithos</source>
<publisher>Elsevier</publisher>
<identifier>hal-00424515</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00424515</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00424515</source>
<source>Lithos, Elsevier, 2009, 107 (1-2), pp.17-37. 〈10.1016/j.lithos.2008.07.004〉</source>
<identifier>DOI : 10.1016/j.lithos.2008.07.004</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.lithos.2008.07.004</relation>
<language>en</language>
<subject lang=en>Melt–rock reaction</subject>
<subject lang=en>Primitive arc-magma</subject>
<subject lang=en>Trace elements</subject>
<subject lang=en>Metasomatism</subject>
<subject lang=en>Fluids</subject>
<subject>[SDU.STU.PE] Sciences of the Universe [physics]/Earth Sciences/Petrography</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The Sapat peridotite in Kohistan (NW Pakistan) is a 12x1 km sized body of meta-harzburgites, dunites, pyroxenites and meta-gabbros in the hanging wall of the Indus Suture Zone. Field relations, micro-textures, bulk and mineral chemistry document melt-rock reactions producing dunites at the expense of meta-harzburgites, and a consecutive olivine-clinopyroxenite formation from the same melt type. The association of mesa-gabbros, dunites, and pyroxenites is interpreted as a crust-mantle transition zone produced by the percolation of highly depleted primitive arc melt. The meta-harzburgites represent large portions of refractoty mantle that have suffered melt extraction and metasomatism prior to their interaction with the dunite-forming primitive arc melt and the establishment of the crust-mantle transition zone. Uncommon vein assemblages in the dunites that include Cr-clinochlore, calcite and olivine document a late percolation of slab-related, volatile-rich fluids. Taking into account the highly refractory composition of the Sapat mantle, its structural position, the evidence for interaction with highly depleted arc melts and the sub-solidus interaction with volatile-rich arc fluids, the Sapat ultramafic rocks are interpreted as being derived from the frontal Kohistan arc, representing a crust-mantle transition formed by arc magmatism.</description>
<date>2009</date>
</dc>
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