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Froget, C; Desprairies, Alain; Latouche, Claude; Maillet, Noelle (1989): Mineralogy of ODP Leg 104 holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.735952, Supplement to: Froget, C et al. (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

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Abstract:
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.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
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
Event(s):
38-338 * Latitude: 67.785200 * Longitude: 5.387700 * Date/Time: 1974-08-14T00:00:00 * Elevation: -1297.0 m * Penetration: 437 m * Recovery: 207.8 m * Location: North Atlantic/Norwegian Sea/PLATEAU * Campaign: Leg38 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 45 cores; 427.5 m cored; 0 m drilled; 48.6 % recovery
38-343 * Latitude: 68.715200 * Longitude: 5.762200 * Date/Time: 1974-08-22T00:00:00 * Elevation: -3131.0 m * Penetration: 284 m * Recovery: 58.9 m * Location: North Atlantic/Norwegian Sea/BASIN * Campaign: Leg38 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 132 m cored; 0 m drilled; 44.6 % recovery
104-642A * Latitude: 67.225000 * Longitude: 2.928300 * Date/Time Start: 1985-06-28T03:15:00 * Date/Time End: 1985-06-28T14:40:00 * Elevation: -1294.0 m * Penetration: 10.8 m * Recovery: 9.9 m * Location: Norwegian Sea * Campaign: Leg104 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 core; 9.5 m cored; 0 m drilled; 104.2 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets

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Datasets listed in this publication series

  1. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 5) Mineralogy of ODP Hole 104-642B. https://doi.org/10.1594/PANGAEA.735697
  2. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 4) Mineralogy of ODP Hole 104-642C. https://doi.org/10.1594/PANGAEA.735698
  3. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 3) Mineralogy of ODP Hole 104-642D. https://doi.org/10.1594/PANGAEA.735699
  4. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 2) Mineralogy of ODP Hole 104-643A. https://doi.org/10.1594/PANGAEA.735700
  5. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 6) Mineralogy of ODP Hole 104-644A. https://doi.org/10.1594/PANGAEA.735701
  6. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 7) Mineralogy of ODP Hole 104-644B. https://doi.org/10.1594/PANGAEA.735951
  7. Froget, C; Desprairies, A; Latouche, C et al. (1989): (Table 1) Analyses, water-free basis and structural formula for smectite, glauconite and Fe-Mg illite of ODP Leg 104 and DSDP Leg 38 sediments. https://doi.org/10.1594/PANGAEA.735594