Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean
International audience The climatic origin of astronomically induced sedimentary cycles in the Mediterranean and adjacent areas during the late Neogene and Quaternary remains puzzling; as cycles have been linked to concomitant but seasonally opposite changes in African summer monsoon precipitation (...
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Online Access: | https://hal.archives-ouvertes.fr/hal-01884959 https://doi.org/10.1016/j.margeo.2018.05.009 |
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ftccsdartic:oai:HAL:hal-01884959v1 2023-05-15T17:36:01+02:00 Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean Ochoa, Diana Sierro, Francisco J. Hilgen, Frits j. Cortina, Aleix LOFI, Johanna Kouwenhoven, Tanja Flores, Jose-Abel University of Salamanca Utrecht University Utrecht Department of Environmental Chemistry, Barcelona Géosciences Montpellier Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Université des Antilles (UA)-Centre National de la Recherche Scientifique (CNRS) 2018-09-01 https://hal.archives-ouvertes.fr/hal-01884959 https://doi.org/10.1016/j.margeo.2018.05.009 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2018.05.009 hal-01884959 https://hal.archives-ouvertes.fr/hal-01884959 doi:10.1016/j.margeo.2018.05.009 ISSN: 0025-3227 Marine Geology https://hal.archives-ouvertes.fr/hal-01884959 Marine Geology, Elsevier, 2018, 403, pp.150-164. ⟨10.1016/j.margeo.2018.05.009⟩ Pliocene cyclostratigraphy Mediterranean climate Carbonate cycles Sapropel formation Well-log data Western Mediterranean sedimentary cyclicity [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2018 ftccsdartic https://doi.org/10.1016/j.margeo.2018.05.009 2021-11-07T02:41:42Z International audience The climatic origin of astronomically induced sedimentary cycles in the Mediterranean and adjacent areas during the late Neogene and Quaternary remains puzzling; as cycles have been linked to concomitant but seasonally opposite changes in African summer monsoon precipitation (Eastern Mediterranean sapropels) and Atlantic regulated winter-precipitation (carbonate cycles on the Atlantic side of the Mediterranean). Particularly, little is known about the cyclic sedimentation on orbital time scales in the Western Mediterranean, with the prime exception of the Messinian sapropels from the Sorbas basin (southern Spain).Here we show that regular alternations in Pliocene downhole logs from the industrial drill-site Muchamiel-1, located along the Balearic Promontory in the Western Mediterranean, are related to eccentricity (bundles) and to obliquity and precession cycles (basic meter-scale alternations). We establish an astronomically based age model for the interval between 5.33 and 2.8 Ma, by first correlating cycle bundles to eccentricity and then the basic dominantly precession-related cycles to the 65°N summer insolation of La2004. The striking bed-to-bed similarities between the Muchamiel-1 well-logs and other records from both the Atlantic margin and the Central Mediterranean suggest that the same climatic forcing was responsible for the formation of carbonate cycles across the Western Mediterranean and adjacent Atlantic. We conclude that formation of alternating carbonate-rich/carbonate-poor beds was controlled by Western Mediterranean cyclogenetic mechanisms as well as by peri-Mediterranean precipitation associated with changes in the North Atlantic System (NAS). These findings highlight the importance of peri-Mediterranean precipitation on the sedimentary cyclicity by dictating terrigenous (clay) supply and potentially on the hydrology of the basin by providing additional freshwater required for sapropel formation. Consequently, cyclic sedimentation in the Mediterranean results from the ... Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Marine Geology 403 150 164 |
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 |
Pliocene cyclostratigraphy Mediterranean climate Carbonate cycles Sapropel formation Well-log data Western Mediterranean sedimentary cyclicity [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Pliocene cyclostratigraphy Mediterranean climate Carbonate cycles Sapropel formation Well-log data Western Mediterranean sedimentary cyclicity [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Ochoa, Diana Sierro, Francisco J. Hilgen, Frits j. Cortina, Aleix LOFI, Johanna Kouwenhoven, Tanja Flores, Jose-Abel Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean |
topic_facet |
Pliocene cyclostratigraphy Mediterranean climate Carbonate cycles Sapropel formation Well-log data Western Mediterranean sedimentary cyclicity [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The climatic origin of astronomically induced sedimentary cycles in the Mediterranean and adjacent areas during the late Neogene and Quaternary remains puzzling; as cycles have been linked to concomitant but seasonally opposite changes in African summer monsoon precipitation (Eastern Mediterranean sapropels) and Atlantic regulated winter-precipitation (carbonate cycles on the Atlantic side of the Mediterranean). Particularly, little is known about the cyclic sedimentation on orbital time scales in the Western Mediterranean, with the prime exception of the Messinian sapropels from the Sorbas basin (southern Spain).Here we show that regular alternations in Pliocene downhole logs from the industrial drill-site Muchamiel-1, located along the Balearic Promontory in the Western Mediterranean, are related to eccentricity (bundles) and to obliquity and precession cycles (basic meter-scale alternations). We establish an astronomically based age model for the interval between 5.33 and 2.8 Ma, by first correlating cycle bundles to eccentricity and then the basic dominantly precession-related cycles to the 65°N summer insolation of La2004. The striking bed-to-bed similarities between the Muchamiel-1 well-logs and other records from both the Atlantic margin and the Central Mediterranean suggest that the same climatic forcing was responsible for the formation of carbonate cycles across the Western Mediterranean and adjacent Atlantic. We conclude that formation of alternating carbonate-rich/carbonate-poor beds was controlled by Western Mediterranean cyclogenetic mechanisms as well as by peri-Mediterranean precipitation associated with changes in the North Atlantic System (NAS). These findings highlight the importance of peri-Mediterranean precipitation on the sedimentary cyclicity by dictating terrigenous (clay) supply and potentially on the hydrology of the basin by providing additional freshwater required for sapropel formation. Consequently, cyclic sedimentation in the Mediterranean results from the ... |
author2 |
University of Salamanca Utrecht University Utrecht Department of Environmental Chemistry, Barcelona Géosciences Montpellier Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Université des Antilles (UA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Ochoa, Diana Sierro, Francisco J. Hilgen, Frits j. Cortina, Aleix LOFI, Johanna Kouwenhoven, Tanja Flores, Jose-Abel |
author_facet |
Ochoa, Diana Sierro, Francisco J. Hilgen, Frits j. Cortina, Aleix LOFI, Johanna Kouwenhoven, Tanja Flores, Jose-Abel |
author_sort |
Ochoa, Diana |
title |
Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean |
title_short |
Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean |
title_full |
Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean |
title_fullStr |
Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean |
title_full_unstemmed |
Origin and implications of orbital-induced sedimentary cyclicity in Pliocene well-logs of the Western Mediterranean |
title_sort |
origin and implications of orbital-induced sedimentary cyclicity in pliocene well-logs of the western mediterranean |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-01884959 https://doi.org/10.1016/j.margeo.2018.05.009 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0025-3227 Marine Geology https://hal.archives-ouvertes.fr/hal-01884959 Marine Geology, Elsevier, 2018, 403, pp.150-164. ⟨10.1016/j.margeo.2018.05.009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.margeo.2018.05.009 hal-01884959 https://hal.archives-ouvertes.fr/hal-01884959 doi:10.1016/j.margeo.2018.05.009 |
op_doi |
https://doi.org/10.1016/j.margeo.2018.05.009 |
container_title |
Marine Geology |
container_volume |
403 |
container_start_page |
150 |
op_container_end_page |
164 |
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1766135347948814336 |