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Analysis of Mn-deposits from the Alps
In the aftermath of the Triassic?Jurassic extinction event, extant slopes of drowned alpine reef buildups were recolonized in patches by predominantly non-rigid sponges. Just a... -
Analysis of ferromanganese deposits from Mallorca, Spain
The geochemistry of ferromanganese crusts and iron pisoliths from the Jurassic of Mallorca is investigated. The deposits are associated with Toarcian condensed sequences and... -
Analysis of Mn-deposits from the Alps
Near Weissbach - Diessbach southeast of Lofer (Salzburg, Austria), at the western rim of the Steinernes Meer (Northern Calcareous Alps), the sedimentary sequence of a local... -
Analysis of clay and Mn deposits from the Pacific
The concentrations of Sc, Ti, Fe, Mn, Co, Ni, Cu, La, Th and U have been measured in several Pacific pelagic clays having widely different accumulation rates, 0.4-9.0 mm/103 yr.... -
Analysis of Mn-crusts from Dove Ridge
Dove Basin is situated in the south-central Scotia Sea, between Pirie and Bruce banks, and was formed during the development of the Scotia Arc. The basin has a roughly sigmoidal... -
Analysis of Mn-deposits recovered during Leg 54
Two distinct sedimentary facies produced by sea-floor hydrothermal activity were cored during Deep Sea Drilling Project Leg 54. The first is equivalent to the typical basal... -
Analysis of Mn-rich basalt from Leg 51
The successful drilling on Legs 51, 52, and 53 created a rare opportunity to investigate the long-term effects of seawater-rock interactions on the mineralogy and chemistry of... -
Analysis of Mn-nodules from Leg 51
Rhodochrosite crystals and manganese oxide micronodules which have formed in situ are found in abundance at depth (76.5 to 106.5 m) in Hole 417A. A gradual transformation of the... -
Analysis of Mn deposits from Galicia Bank Leg 47
This report deals with results of the first stage of a complex study of the predominantly Lower Cretaceous sediments cored at Site 398 at depths from 945 to 1740 meters. The... -
Analysis of 10Be and Th isotopes in manganese nodules
The usefulness of cosmogenic beryllium-10 (half life = 2.5 Ma) for studying the rates of accumulation of ferromanganese nodules is reported based on its measured depth... -
Analysis of manganese deposits from the Alps
Deposits with unusually high Mn contents sampled at Monte Mangart in the Julian Alps include organic-rich marlstone and black shale with interbedded manganoan and siliceous... -
Analysis of manganes nodules from the Antarctic Ocean
Five nodules collected on Leg 28 of the Deep Sea Drilling Project are unique in that they provide an opportunity of studying older, buried nodules. Paleontological evidence from... -
Analysis of spherules from Pacific Ocean sediments
Metallic spherules from Central Pacific Ocean sediments (“Valdivia” expedition VA-05/1, 1973) were studied by means of microscopy and by electron microprobe analysis. The data... -
Analysis of manganese nodules from Lake Baikal
Although ferromanganese crusts from shallow depths in Lake Baykal have been described previously, the presence of nodules at depths of about 500 m are a new discovery made... -
Analysis of manganes deposits of Leg 23
Located on the Arabian Abyssal Plain near its southernmost termination, this site recorded continuous Middle Eocene through Pleistocene deep-water sedimentation above oceanic... -
Analysis of manganes deposits on Leg XV
The sediments of Leg 15 included several noteworthy occurrences of authigenic, volcanic and continentally derived minerals. Of these, the occurrence of native copper in pelagic... -
Chemical analysis of Mn nodules from the Pacific
In 1970, the United States put forward the first detailed and comprehensive proposal for a regime which would apply to the mining of manganese nodules in the area beyond... -
Analysis of manganese nodules of the Scripps collection
The Marine Minerals Database contains geochemical analyses and auxiliary information on present-day marine deposits of primarily ferromanganese nodules and crusts. Some data... -
Composition of ferromanganese nodules from the Pacific
Bulk composition of ferromanganese nodules from the pelagic environment of the Pacific Ocean is apparently related to nodule-growth rate, sediment-accumulation rate, and... -
Analysis of ferromanganese nodules from the North Pacific
10Be, U and Th isotopes, Ra, 210Pb, Mn, Fe and several trace elements are measured in the hydroxylamine hydrochloride leachates and residues of two ferro-manganese nodules...
