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
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" comp...
Published in: | Bulletin de la Société Géologique de France |
---|---|
Main Authors: | , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-00405328 https://doi.org/10.2113/gssgfbull.178.1.15 |
id |
ftccsdartic:oai:HAL:hal-00405328v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-00405328v1 2023-05-15T18:00:42+02:00 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 Peybernes, Bernard Fondecave-Wallez, M. J. Combes, Pierre-Jean Seranne, Michel 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) Laboratoire des Mécanismes et Transfert en Géologie (LMTG) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.archives-ouvertes.fr/hal-00405328 https://doi.org/10.2113/gssgfbull.178.1.15 en eng HAL CCSD Société géologique de France info:eu-repo/semantics/altIdentifier/doi/10.2113/gssgfbull.178.1.15 hal-00405328 https://hal.archives-ouvertes.fr/hal-00405328 doi:10.2113/gssgfbull.178.1.15 ISSN: 0037-9409 EISSN: 1777-5817 Bulletin de la Société Géologique de France https://hal.archives-ouvertes.fr/hal-00405328 Bulletin de la Société Géologique de France, Société géologique de France, 2007, 178 (1), pp.15-24. ⟨10.2113/gssgfbull.178.1.15⟩ Breccias Hemipelagites Paleocene/Eocene planktonic foraminifera Paleokarsts Folding Catalan Pyrenees Spain [SDU.OTHER]Sciences of the Universe [physics]/Other info:eu-repo/semantics/article Journal articles 2007 ftccsdartic https://doi.org/10.2113/gssgfbull.178.1.15 2021-10-24T19:45:31Z 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. Article in Journal/Newspaper Planktonic foraminifera Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Bulletin de la Société Géologique de France 178 1 15 24 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Breccias Hemipelagites Paleocene/Eocene planktonic foraminifera Paleokarsts Folding Catalan Pyrenees Spain [SDU.OTHER]Sciences of the Universe [physics]/Other |
spellingShingle |
Breccias Hemipelagites Paleocene/Eocene planktonic foraminifera Paleokarsts Folding Catalan Pyrenees Spain [SDU.OTHER]Sciences of the Universe [physics]/Other Peybernes, Bernard Fondecave-Wallez, M. J. Combes, Pierre-Jean Seranne, Michel 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 |
topic_facet |
Breccias Hemipelagites Paleocene/Eocene planktonic foraminifera Paleokarsts Folding Catalan Pyrenees Spain [SDU.OTHER]Sciences of the Universe [physics]/Other |
description |
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. |
author2 |
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) Laboratoire des Mécanismes et Transfert en Géologie (LMTG) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Peybernes, Bernard Fondecave-Wallez, M. J. Combes, Pierre-Jean Seranne, Michel |
author_facet |
Peybernes, Bernard Fondecave-Wallez, M. J. Combes, Pierre-Jean Seranne, Michel |
author_sort |
Peybernes, Bernard |
title |
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_short |
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_full |
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_fullStr |
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_full_unstemmed |
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_sort |
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 |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00405328 https://doi.org/10.2113/gssgfbull.178.1.15 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 0037-9409 EISSN: 1777-5817 Bulletin de la Société Géologique de France https://hal.archives-ouvertes.fr/hal-00405328 Bulletin de la Société Géologique de France, Société géologique de France, 2007, 178 (1), pp.15-24. ⟨10.2113/gssgfbull.178.1.15⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2113/gssgfbull.178.1.15 hal-00405328 https://hal.archives-ouvertes.fr/hal-00405328 doi:10.2113/gssgfbull.178.1.15 |
op_doi |
https://doi.org/10.2113/gssgfbull.178.1.15 |
container_title |
Bulletin de la Société Géologique de France |
container_volume |
178 |
container_issue |
1 |
container_start_page |
15 |
op_container_end_page |
24 |
_version_ |
1766169911836540928 |