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  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Montadert, Lucien; Roberts, David G; Auffret, Gérard A; Bock, W D; Dupeuble, P A; Hailwood, Ernie A; Harrison, William E; Kagami, H; Lumsden, D N; Müller, C M; Schnitker, Detmar; Thompson, T L; Timofeev, Pyotr P (1979): Initial Reports of the Deep Sea Drilling Project. U. S. Government Printing Office, XLVIII, 1183 pp, https://doi.org/10.2973/dsdp.proc.48.1979
    Publication Date: 2023-08-28
    Description: Unlike many cruises of the Deep Sea Drilling Project, Leg 48 was scientifically planned to drill a number of sites to systematically address the problems of passive margin evolution. Site 400 was drilled at the foot of the Meriadzek Escarpment of North Biscay in 4399 meters depth. The site was located in a half-graben forming part of a succession of tilted and rotated fault blocks near the continent/ocean boundary. Site 401 was situated on the planated edge of a tilted fault-block underlying the southern edge of the Meriadzek Terrace on the north Biscay margin. Site 402 was located on the upper slope of the northern continental margin of the Bay of Biscay. The main objectives were to establish the presence or absence of shallow water Upper Cretaceous beds, and to penetrate pre-Aptian synrift sediments and the upslope equivalent of the deep water Albian-Aptian carbonaceous mudstones penetrated at Hole 400A.
    Keywords: 48-400A; 48-401; 48-402; Comment; Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Identification; Leg48; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Atlantic/BASIN; North Atlantic/SLOPE; North Atlantic/TERRACE; Position; Quantity of deposit; Sample code/label; Sediment type; Substrate type; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 67 data points
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Mineralogy and petrology 32 (1983), S. 111-133 
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Zusammenfassung Polymetallische hydrothermale Gang- und Imprägnationsvererzungen bestehend aus Cu−Fe-Sulfiden (Bornit, Chalkopyrit, Digenit, Chalkosin) und Ni−Co-Arseniden (Niccolit, Rammelsbergit, Safflorit, Skutterudit) mit Bi und U sowie Kupfer-Arseniden (Domeykit, Koutektit usw.) kommen in zwei stillgelegten Minen im Anarak-Distrikt vor. Geologisch-tektonischer Rahmen und Mineralparagenesen beider Vorkommen werden im Detail untersucht. Insgesamt haben die Mineralisationen ihren Ursprung im tertiären Magmatismus, erfolgten jedoch wahrscheinlich in zwei zeitlich unterschiedlichen Perioden. Die ältere Cu-Sulfidvererzung wird strukturell durch eine prä-mitteleozäne Tektonik kontrolliert und hängt mit dem eozänen shoshonitischen Vulkanismus zusammen, während für die zweite jüngere Ni−Co−Ag−Bi−U-Mineralisation vermutlich eine miozäne Bewegungsphase mit Granitintrusionen verantwortlich zu machen ist.
    Notes: Summary Polymetallic hydrothermal veins and impregnations carry copper-iron sulphides (bornite, chalcopyrite, digenite, chalcocite) and nickel-cobalt arsenides (niccolite, rammelsbergite, safflorite, skutterudite) with bismuth and uranium as well as some copper arsenides (domeykite, koutekite etc.) in two dormant mines in the Anarak District. The geological and tectonic framework and the mineral associations of both occurrences have been investigated in detail. Both mineralizations can be attributed to Tertiary magmatism, but were deposited in two temporally distinct periods. The older copper sulphide mineralization is structurally controlled by pre-middle Ecocene tectonics and is linked to Eocene shoshonitic volcanism. The second, younger nickel-cobalt-silver-bismuth-uranium mineralization might be attributed to a granitic magmatism linked to a Miocene phase of movement.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 1983-01-01
    Print ISSN: 0041-3763
    Electronic ISSN: 1438-1168
    Topics: Geosciences
    Published by Springer
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