Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau
On the Cape Verde Plateau, Neogene deposits are composed of major pelagic and hemipelagic sediments. These sediments show climatic sequences composed of two lithologic terms that differ in their siliciclastic and carbonate contents. Several turbiditic and contouritic sequences are interbedded in the...
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1989
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746573 2024-09-15T18:23:49+00:00 Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau Faugeres, Jean-Claude Legigan, Philippe Maillet, Noelle Latouche, Claude LATITUDE: 18.077200 * LONGITUDE: -21.026200 * DATE/TIME START: 1986-03-09T00:00:00 * DATE/TIME END: 1986-03-12T09:45:00 1989 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.746573 https://doi.org/10.1594/PANGAEA.746573 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746573 https://doi.org/10.1594/PANGAEA.746573 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Faugeres, Jean-Claude; Legigan, Philippe; Maillet, Noelle; Latouche, Claude (1989): Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau (Leg 108, Site 659, Northwest Africa): sediment record during Neogene time. In: Ruddiman, W; Sarnthein, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 108, 311-327, https://doi.org/10.2973/odp.proc.sr.108.138.1989 108-659 108-659B COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg108 North Atlantic Ocean Ocean Drilling Program ODP dataset publication series 1989 ftpangaea https://doi.org/10.1594/PANGAEA.74657310.2973/odp.proc.sr.108.138.1989 2024-08-21T00:02:25Z On the Cape Verde Plateau, Neogene deposits are composed of major pelagic and hemipelagic sediments. These sediments show climatic sequences composed of two lithologic terms that differ in their siliciclastic and carbonate contents. Several turbiditic and contouritic sequences are interbedded in these deposits. Turbidite sequences are fine grained and thin bedded with a very low frequency (about 12 sequences during the Neogene). They are composed of quartz-rich siliciclastic or volcaniclastic sediments. Quartz-rich turbidites originated from the Senegalese margin. Their slightly higher frequency during the early Pliocene indicates that the stronger turbidity currents, and probably the most abundant continental inputs, occur at that period. Volcaniclastic turbidites are only present in the early Miocene (about 17 Ma) and the early Pleistocene (1 Ma). They have flown from adjacent Cape Verde Islands and reflect two episodes of high volcanic activity in this area. Contourite sequences, composed of biogenic sandy silts, represent less than 5% of the sediment pile and seem to have been mainly deposited during the late Pleistocene. These different sequences show clay mineral variations throughout Neogene time. Kaolinite is predominant in the Miocene and lower Pliocene deposits; this mineral decreases thereafter, with an increased trend of illite in the uppermost Pliocene and Pleistocene sediments, suggesting a change in sediment sources on the Saharan continent at about 2.6 Ma. Other/Unknown Material North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-21.026200,-21.026200,18.077200,18.077200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
108-659 108-659B COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg108 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
108-659 108-659B COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg108 North Atlantic Ocean Ocean Drilling Program ODP Faugeres, Jean-Claude Legigan, Philippe Maillet, Noelle Latouche, Claude Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau |
topic_facet |
108-659 108-659B COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg108 North Atlantic Ocean Ocean Drilling Program ODP |
description |
On the Cape Verde Plateau, Neogene deposits are composed of major pelagic and hemipelagic sediments. These sediments show climatic sequences composed of two lithologic terms that differ in their siliciclastic and carbonate contents. Several turbiditic and contouritic sequences are interbedded in these deposits. Turbidite sequences are fine grained and thin bedded with a very low frequency (about 12 sequences during the Neogene). They are composed of quartz-rich siliciclastic or volcaniclastic sediments. Quartz-rich turbidites originated from the Senegalese margin. Their slightly higher frequency during the early Pliocene indicates that the stronger turbidity currents, and probably the most abundant continental inputs, occur at that period. Volcaniclastic turbidites are only present in the early Miocene (about 17 Ma) and the early Pleistocene (1 Ma). They have flown from adjacent Cape Verde Islands and reflect two episodes of high volcanic activity in this area. Contourite sequences, composed of biogenic sandy silts, represent less than 5% of the sediment pile and seem to have been mainly deposited during the late Pleistocene. These different sequences show clay mineral variations throughout Neogene time. Kaolinite is predominant in the Miocene and lower Pliocene deposits; this mineral decreases thereafter, with an increased trend of illite in the uppermost Pliocene and Pleistocene sediments, suggesting a change in sediment sources on the Saharan continent at about 2.6 Ma. |
format |
Other/Unknown Material |
author |
Faugeres, Jean-Claude Legigan, Philippe Maillet, Noelle Latouche, Claude |
author_facet |
Faugeres, Jean-Claude Legigan, Philippe Maillet, Noelle Latouche, Claude |
author_sort |
Faugeres, Jean-Claude |
title |
Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau |
title_short |
Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau |
title_full |
Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau |
title_fullStr |
Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau |
title_full_unstemmed |
Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau |
title_sort |
pelagic, turbiditic, and contouritic sequential deposits on the cape verde plateau |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746573 https://doi.org/10.1594/PANGAEA.746573 |
op_coverage |
LATITUDE: 18.077200 * LONGITUDE: -21.026200 * DATE/TIME START: 1986-03-09T00:00:00 * DATE/TIME END: 1986-03-12T09:45:00 |
long_lat |
ENVELOPE(-21.026200,-21.026200,18.077200,18.077200) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Faugeres, Jean-Claude; Legigan, Philippe; Maillet, Noelle; Latouche, Claude (1989): Pelagic, turbiditic, and contouritic sequential deposits on the Cape Verde Plateau (Leg 108, Site 659, Northwest Africa): sediment record during Neogene time. In: Ruddiman, W; Sarnthein, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 108, 311-327, https://doi.org/10.2973/odp.proc.sr.108.138.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746573 https://doi.org/10.1594/PANGAEA.746573 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.74657310.2973/odp.proc.sr.108.138.1989 |
_version_ |
1810464080689889280 |