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<identifier>oai:HAL:hal-00445252v1</identifier>
<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>New radiolarian assemblages from La Desirade Island basement complex (Guadeloupe, Lesser Antilles arc) and Caribbean tectonic implications</title>
<creator>Cordey, Fabrice</creator>
<creator>Cornee, Jean-Jacques</creator>
<contributor>Paléoenvironnement et paléobiosphère (PP) ; Université Claude Bernard Lyon 1 (UCBL) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)</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>
<source>EISSN: 1777-5817</source>
<source>Bulletin de la Société Géologique de France</source>
<publisher>Société géologique de France</publisher>
<identifier>hal-00445252</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00445252</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00445252</source>
<source>Bulletin de la Société Géologique de France, Société géologique de France, 2009, 180 (5), pp.399-409. 〈10.2113/gssgfbull.180.5.399〉</source>
<identifier>DOI : 10.2113/gssgfbull.180.5.399</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.2113/gssgfbull.180.5.399</relation>
<language>en</language>
<subject lang=es>Radiolaria</subject>
<subject lang=es>La Desirade</subject>
<subject lang=es>Guadeloupe</subject>
<subject lang=es>Lesser Antilles</subject>
<subject lang=es>Caribbean plate</subject>
<subject lang=es>Jurassic</subject>
<subject>[SDU.STU.TE] Sciences of the Universe [physics]/Earth Sciences/Tectonics</subject>
<subject>[SDE.MCG] Environmental Sciences/Global Changes</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>New radiolarian assemblages of Late Jurassic age were extracted from seven chert localities of the basement comp ex of La Desirade Island (Guadeloupe), the oldest geological unit of the Lesser Antilles arc and the eastern Caribbean region. These fauna range in age from Kimmeridgian or early Tithonian to early or early late Tithonian, showing that La Desirade cherts are not all coeval, contrary to what was established by previous studies. Furthermore, the close spatial association of cherts and volcanic elements composed of basaltic flows and volcaniclastics suggests a mixed setting of hydrothermal siliceous deposits and biogenous sedimentation consistent with an arc-related oceanic setting rather than an ophiolite-type oceanic crust. As the Youngest age is obtained to the northwest of the basement complex where as older data are found to the southeast, it also Suggests that La Desirade basement complex may have undergone some structural stacking consistent with an accretion-type geodynamic getting. Our biochronological data provide a preliminury try tectonic model of an eastward subduction zone for Lesser Antilles arc basement emplacement during the Mesozois.</description>
<date>2009</date>
</dc>
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