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<datestamp>2018-01-11</datestamp>
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<title lang=en>Successive Paleocene and Eocene infillings of polyphase paleokarsts within the Cretaceous limestones of the Emporda thrust sheets (Catalan Pyrenees, Spain) : relationships between tectonics and karstification</title>
<creator>Peybernes, Bernard</creator>
<creator>Fondecave-Wallez, M. J.</creator>
<creator>Combes, Pierre-Jean</creator>
<creator>Seranne, Michel</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>Laboratoire des Mécanismes et Transfert en Géologie (LMTG) ; Université Paul Sabatier - Toulouse 3 (UPS) - Observatoire Midi-Pyrénées (OMP) - 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-00405328</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00405328</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00405328</source>
<source>Bulletin de la Société Géologique de France, Société géologique de France, 2007, 178 (1), pp.15-24. 〈10.2113/gssgfbull.178.1.15〉</source>
<identifier>DOI : 10.2113/gssgfbull.178.1.15</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.2113/gssgfbull.178.1.15</relation>
<language>en</language>
<subject lang=en>Breccias</subject>
<subject lang=en>Hemipelagites</subject>
<subject lang=en>Paleocene/Eocene planktonic foraminifera</subject>
<subject lang=en>Paleokarsts</subject>
<subject lang=en>Folding</subject>
<subject lang=en>Catalan Pyrenees</subject>
<subject lang=en>Spain</subject>
<subject>[SDU.OTHER] Sciences of the Universe [physics]/Other</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The Mesozoic series of the southern units of the Pyrenean Empordà thrust sheets (Montgrí and Figueres nappes, Catalonia, Spain) were finally emplaced over the autochthonous basement and its Cenozoic cover during Eocene times. However, they have originally been folded by the "Laramian" compressional event (Late Cretaceous/Early Paleocene), while they were still in their root zone more than 50 km to the N-NE. Postdating the Santonian, the emersion of the Cretaceous tectorogen induced karst formation at the expense of Berriasian to Santonian limestone sequences. Karst cavities of this paleokarst 1 (lapiaz and canyons) were subsequently coated with a fine, red or black, Microcodium-bearing, continental silt, and infilled with marine chaotic breccias. Following a new episode of emersion then erosion, the original paleokarst 1 was cross-cut by newly formed cavities of the paleokarst 2, filled with Lutetian-Bartonian marine breccias. Both types of marine breccias (Paleocene then Eocene in age) are now relatively well dated by means of planktonic foraminifera (Globigerinacea) occurring within the argillaceous-sandy matrix, and for the older ones, within the argillaceous-sandy or carbonate, finely laminated, interbedded hemipelagites, that mark the top of marine sequences tens of centimetres thick. The relationships of the "Laramian" and "Pyrenean" compressional tectonic events, occurring from latest Cretaceous to Bartonian, with the development of paleokarsts 1 and 2 are analysed in the perspective of the progressive southwards emplacement of the Montgrí thrust sheet, during Eocene time.</description>
<date>2007</date>
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