Mineralogy of ODP Leg 104 holes
The mineralogical and geochemical study of samples from Sites 642, 643, and 644 enabled us to reconstruct several aspects of the Cenozoic paleoenvironmental evolution (namely volcanism, climate, hydrology) south of the Norwegian Sea and correlate it with evolution trends in the northeast Atlantic. W...
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1989
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.735952 https://doi.org/10.1594/PANGAEA.735952 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.735952 2023-05-15T16:51:43+02:00 Mineralogy of ODP Leg 104 holes Froget, C Desprairies, Alain Latouche, Claude Maillet, Noelle MEDIAN LATITUDE: 67.250871 * MEDIAN LONGITUDE: 3.256314 * SOUTH-BOUND LATITUDE: 66.678300 * WEST-BOUND LONGITUDE: 1.033300 * NORTH-BOUND LATITUDE: 68.715200 * EAST-BOUND LONGITUDE: 5.762200 * DATE/TIME START: 1974-08-14T00:00:00 * DATE/TIME END: 1985-08-10T18:30:00 1989-03-30 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.735952 https://doi.org/10.1594/PANGAEA.735952 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.735952 https://doi.org/10.1594/PANGAEA.735952 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Froget, C; Desprairies, Alain; Latouche, Claude; Maillet, Noelle (1989): Paleoenvironmental significance of Cenozoic clay deposits from the Norwegian Sea: ODP Leg 104. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 41-60, https://doi.org/10.2973/odp.proc.sr.104.112.1989 104-642A 104-642B 104-642C 104-642D 104-643A 104-644A 104-644B 38-338 38-343 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg104 Leg38 North Atlantic/Norwegian Sea/BASIN North Atlantic/Norwegian Sea/PLATEAU Norwegian Sea Ocean Drilling Program ODP Dataset 1989 ftpangaea https://doi.org/10.1594/PANGAEA.735952 https://doi.org/10.2973/odp.proc.sr.104.112.1989 2023-01-20T07:31:43Z The mineralogical and geochemical study of samples from Sites 642, 643, and 644 enabled us to reconstruct several aspects of the Cenozoic paleoenvironmental evolution (namely volcanism, climate, hydrology) south of the Norwegian Sea and correlate it with evolution trends in the northeast Atlantic. Weathering products of early Paleogene volcanic material at Rockall Plateau, over the Faeroe-Iceland Ridge and the Voring Plateau indicate a hot and moist climate (lateritic environment) existed then. From Eocene to Oligocene, mineralogical assemblages of terrigenous sediments suggest the existence of a warm but somewhat less moist climate at that time than during the early Paleogene. At the beginning of early Miocene, climatic conditions were warm and damp. The large amounts of amorphous silica in Miocene sediment could indicate an important flux of silica from the continent then, or suggest the formation of upwelling. Uppermost lower Miocene and middle to upper Miocene clay assemblages suggest progressive cooling of the climate from warm to temperate at that time. At the end of early Miocene, hydrological exchanges between the North Atlantic and the Norwegian Sea became intense and gave rise to an important change in the mineralogy of deposits. From Pliocene to Pleistocene, the variable mineralogy of deposits reflects alternating glacial/interglacial climatic episodes, a phenomenon observed throughout the North Atlantic. Dataset Iceland North Atlantic Northeast Atlantic Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science Norwegian Sea Rockall Plateau ENVELOPE(-18.833,-18.833,56.333,56.333) ENVELOPE(1.033300,5.762200,68.715200,66.678300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
104-642A 104-642B 104-642C 104-642D 104-643A 104-644A 104-644B 38-338 38-343 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg104 Leg38 North Atlantic/Norwegian Sea/BASIN North Atlantic/Norwegian Sea/PLATEAU Norwegian Sea Ocean Drilling Program ODP |
spellingShingle |
104-642A 104-642B 104-642C 104-642D 104-643A 104-644A 104-644B 38-338 38-343 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg104 Leg38 North Atlantic/Norwegian Sea/BASIN North Atlantic/Norwegian Sea/PLATEAU Norwegian Sea Ocean Drilling Program ODP Froget, C Desprairies, Alain Latouche, Claude Maillet, Noelle Mineralogy of ODP Leg 104 holes |
topic_facet |
104-642A 104-642B 104-642C 104-642D 104-643A 104-644A 104-644B 38-338 38-343 Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg104 Leg38 North Atlantic/Norwegian Sea/BASIN North Atlantic/Norwegian Sea/PLATEAU Norwegian Sea Ocean Drilling Program ODP |
description |
The mineralogical and geochemical study of samples from Sites 642, 643, and 644 enabled us to reconstruct several aspects of the Cenozoic paleoenvironmental evolution (namely volcanism, climate, hydrology) south of the Norwegian Sea and correlate it with evolution trends in the northeast Atlantic. Weathering products of early Paleogene volcanic material at Rockall Plateau, over the Faeroe-Iceland Ridge and the Voring Plateau indicate a hot and moist climate (lateritic environment) existed then. From Eocene to Oligocene, mineralogical assemblages of terrigenous sediments suggest the existence of a warm but somewhat less moist climate at that time than during the early Paleogene. At the beginning of early Miocene, climatic conditions were warm and damp. The large amounts of amorphous silica in Miocene sediment could indicate an important flux of silica from the continent then, or suggest the formation of upwelling. Uppermost lower Miocene and middle to upper Miocene clay assemblages suggest progressive cooling of the climate from warm to temperate at that time. At the end of early Miocene, hydrological exchanges between the North Atlantic and the Norwegian Sea became intense and gave rise to an important change in the mineralogy of deposits. From Pliocene to Pleistocene, the variable mineralogy of deposits reflects alternating glacial/interglacial climatic episodes, a phenomenon observed throughout the North Atlantic. |
format |
Dataset |
author |
Froget, C Desprairies, Alain Latouche, Claude Maillet, Noelle |
author_facet |
Froget, C Desprairies, Alain Latouche, Claude Maillet, Noelle |
author_sort |
Froget, C |
title |
Mineralogy of ODP Leg 104 holes |
title_short |
Mineralogy of ODP Leg 104 holes |
title_full |
Mineralogy of ODP Leg 104 holes |
title_fullStr |
Mineralogy of ODP Leg 104 holes |
title_full_unstemmed |
Mineralogy of ODP Leg 104 holes |
title_sort |
mineralogy of odp leg 104 holes |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.735952 https://doi.org/10.1594/PANGAEA.735952 |
op_coverage |
MEDIAN LATITUDE: 67.250871 * MEDIAN LONGITUDE: 3.256314 * SOUTH-BOUND LATITUDE: 66.678300 * WEST-BOUND LONGITUDE: 1.033300 * NORTH-BOUND LATITUDE: 68.715200 * EAST-BOUND LONGITUDE: 5.762200 * DATE/TIME START: 1974-08-14T00:00:00 * DATE/TIME END: 1985-08-10T18:30:00 |
long_lat |
ENVELOPE(-18.833,-18.833,56.333,56.333) ENVELOPE(1.033300,5.762200,68.715200,66.678300) |
geographic |
Norwegian Sea Rockall Plateau |
geographic_facet |
Norwegian Sea Rockall Plateau |
genre |
Iceland North Atlantic Northeast Atlantic Norwegian Sea |
genre_facet |
Iceland North Atlantic Northeast Atlantic Norwegian Sea |
op_source |
Supplement to: Froget, C; Desprairies, Alain; Latouche, Claude; Maillet, Noelle (1989): Paleoenvironmental significance of Cenozoic clay deposits from the Norwegian Sea: ODP Leg 104. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 41-60, https://doi.org/10.2973/odp.proc.sr.104.112.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.735952 https://doi.org/10.1594/PANGAEA.735952 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.735952 https://doi.org/10.2973/odp.proc.sr.104.112.1989 |
_version_ |
1766041828876877824 |