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<datestamp>2018-01-11</datestamp>
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<title lang=en>Ternary feldspar thermometry of Paleoproterozoic granulites from In-Ouzzal terrane (Western Hoggar, southern Algeria)</title>
<creator>Benbatta, A.</creator>
<creator>Bendaoud, A.</creator>
<creator>CENKI-TOK, Benedicte</creator>
<creator>Adjerid, Z.</creator>
<creator>Lacene, K.</creator>
<creator>Ouzegane, K.</creator>
<contributor>USTBH, Alger</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>Dynamique de la Lithosphere ; 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) - 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>ENS Kouba</contributor>
<description>International audience</description>
<source>ISSN: 0899-5362</source>
<source>Journal of African Earth Sciences</source>
<publisher>Elsevier</publisher>
<identifier>hal-01526950</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01526950</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01526950</source>
<source>Journal of African Earth Sciences, Elsevier, 2017, 127, pp.51-61. 〈10.1016/j.jafrearsci.2016.08.005〉</source>
<identifier>DOI : 10.1016/j.jafrearsci.2016.08.005</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jafrearsci.2016.08.005</relation>
<language>en</language>
<subject lang=en>Feldspar thermometry</subject>
<subject lang=en>UHT metamorphism</subject>
<subject lang=en>In Ouzzal terrane</subject>
<subject lang=en>Hoggar</subject>
<subject lang=en>Paleoproterozoic</subject>
<subject>[SDU.STU.GC] Sciences of the Universe [physics]/Earth Sciences/Geochemistry</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The In Ouzzal terrane in western Hoggar (Southern Algeria) preserves evidence of ultrahigh temperature (UHT) crustal metamorphism. It consists in Archean crustal units, composed of orthogneissic domes and greenstone belts, strongly remobilized during the Paleoproterozoic orogeny which was recognized as an UHT event (peak T > 1000 °C and P ≈ 9–12 kbar). This metamorphism was essentially defined locally in Al-Mg granulites, Al-Fe granulites and quartzites outcropping in the Northern part of the In Ouzzal terrane (IOT).In order to test and verify the regional spread of the UHT metamorphism in this terrane, ternary feldspar thermometry on varied rock types (Metanorite, Granulite Al-Mg and Orthogneiss) and samples that crop out in different zones of the In Ouzzal terrane. These rocks contain either perthitic, antiperthitic or mesoperthitic parageneses. Ternary feldspars used in this study have clearly a metamorphic origin.The obtained results combined with previous works show that this UHT metamorphism (>900 °C) affected the whole In Ouzzal crustal block. This is of major importance as for future discussion on the geodynamic context responsible for this regional UHT metamorphism.</description>
<date>2017-03</date>
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