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  • 1
    Publication Date: 2023-08-28
    Keywords: Cerium oxide; CHA-276; Challenger1872; DEPTH, sediment/rock; Description; Grab; GRAB; H.M.S. Challenger (1872); Mercury oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Sample code/label; Thorium oxide
    Type: Dataset
    Format: text/tab-separated-values, 5 data points
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  • 2
    Publication Date: 2023-08-28
    Keywords: 248; CHA-248; CHA-252; CHA-276; Challenger1872; DEPTH, sediment/rock; Description; Event label; Grab; GRAB; H.M.S. Challenger (1872); Insoluble material; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Northwest Pacific Ocean; Sample code/label; Soluble residue; TRAWL; Trawl net
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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  • 3
    Publication Date: 2023-08-28
    Keywords: 248; CHA-248; CHA-252; CHA-276; Challenger1872; Deposit type; DEPTH, sediment/rock; Description; Event label; Feature; Grab; GRAB; H.M.S. Challenger (1872); NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Northwest Pacific Ocean; Position; Quantity of deposit; Sample code/label; Sediment type; Size; Station label; Substrate type; TRAWL; Trawl net; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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  • 4
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    Unknown
    PANGAEA
    In:  Supplement to: Riley, J P; Sinhaseni, P (1958): Chemical composition of three manganese nodules from the Pacific Ocean. Journal of Marine Research, 17, 466-482, hdl:10013/epic.46183.d001
    Publication Date: 2023-08-28
    Description: Three manganese nodules from the Pacific Ocean have been analysed for 35 elements by using mainly spectrophotometric and spectrographic methods. Cu, Co, Ni, Zn, and Pb were found in amounts approaching 1 %, which far exceeds their average concentrations in igneous rocks. On the other hand, elements having readily hydrolysable ions, such as Ga, Sc, Zr, Y, La and Ti, are present only in amounts comparable with their concentrations in igneous rocks. Sb, Bit Be, and Cr were not detected. The hydrochloric acid-insoluble fraction of nodules is practically free of the heavy metals that are characteristic of the acid-soluble fraction; it consists principally of clay minerals, together with lesser amounts of quartz, apatite, biotite and sodium and potassium felspars.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 5
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    Unknown
    PANGAEA
    In:  Supplement to: El Wakeel, S K; Riley, J P (1961): Chemical and mineralogical studies of fossil red clays from Timor. Geochimica et Cosmochimica Acta, 24(3-4), 260-265, https://doi.org/10.1016/0016-7037(61)90021-7
    Publication Date: 2023-08-28
    Description: Chemical analyses are presented for two Cretaceous clays from Noil Tobee, Timor. Mineralogical examination has shown that they consist principally of quartz, feldspar, illite and chlorite, together with minor amounts of montmorillonite. Both chemically and mineralogically the clays are very similar to the recent argillaceous deep-sea sediments of the Pacific and Indian Oceans, which confirms Molengraaff's theory (1921) that they are of deep-sea origin. Further confirmation of this theory is provided by comparison of the composition of micromanganese nodules, separated from one of these clays, with that of manganese nodules from the Pacific Ocean.
    Keywords: Aluminium oxide; Barium oxide; Calcium oxide; Carbon dioxide; Cobalt oxide; Copper(II) oxide; DEPTH, sediment/rock; Description; Flame photometry; Gallium oxide; Identification; Iron oxide, Fe2O3; Lead oxide; Magnesium oxide; Manganese oxide; Molybdenum trioxide; Nickel oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Noil_Tobee_M; Noni river, Timor; Oxygen, gas; Phosphorus pentoxide; Potassium oxide; Silicon dioxide; Sodium oxide; Spectrophotometric; Strontium oxide; Tin dioxide; Titanium dioxide; Vanadium oxide; Water in rock; Wet chemistry; Zinc oxide; Zirconium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 38 data points
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  • 6
    Publication Date: 2023-08-28
    Keywords: 248; Aluminium oxide; Barium oxide; Boron oxide; Cadmium oxide; Calcium oxide; Carbon dioxide; CHA-248; CHA-252; CHA-276; Challenger1872; Chromium(III) oxide; Cobalt oxide; Copper(II) oxide; DEPTH, sediment/rock; Description; Event label; Gallium oxide; Germanium oxide; Grab; GRAB; H.M.S. Challenger (1872); Iron oxide, Fe2O3; Lanthanum oxide; Lead oxide; Magnesium oxide; Manganese oxide; Molybdenum trioxide; Nickel oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Northwest Pacific Ocean; Oxygen, gas; Phosphorus pentoxide; Potassium oxide; Sample code/label; Scandium oxide; Silver oxide; Sodium oxide; Spectrophotometric; Strontium oxide; Thallium(I) oxide; Tin dioxide; Titanium dioxide; TRAWL; Trawl net; Tungsten trioxide; Vanadium oxide; Water in rock; Yttrium oxide; Zinc oxide; Zirconium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 104 data points
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  • 7
    Publication Date: 2023-08-28
    Keywords: 248; Aluminium oxide; Barium; Calcium oxide; CHA-248; CHA-252; CHA-276; Challenger1872; Cobalt; Copper; DEPTH, sediment/rock; Description; Event label; Gallium; Grab; GRAB; H.M.S. Challenger (1872); Iron oxide, Fe2O3; Lead; Magnesium oxide; Manganese oxide; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Northwest Pacific Ocean; Phosphorus pentoxide; Potassium oxide; Sample code/label; Silicon dioxide; Sodium oxide; Spectrophotometric; Strontium; Tin; Titanium dioxide; TRAWL; Trawl net; Vanadium; Water in rock; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 59 data points
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  • 8
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    Unknown
    Journal of Marine Research
    In:  EPIC3Bremerhaven, Journal of Marine Research
    Publication Date: 2015-11-01
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: application/pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 55 (1979), S. 29-35 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The solubility and dissolution rate of silica were investigated using cell walls prepared from two species of diatoms, Thalassiosira decipiens and Rhizosolenia hebetata forma semispina. The solubility (C e) as a function of temperature (T, °C) can be described by the following equation: C e (SiO2 mg l-1)=67.8+1.48 T. The first-order reaction equation without the surface-area term was considered to be reasonable in estimating the dissolution rate of biogenic silica in the ocean system. The rate of dissolution differed not only from one species to another but also from one portion to another portion of the same wall. The rate constants of dissolution in the ocean system were estimated to range in the order of from 10-1 to 10-9 per hour.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 8 (1972), S. 0 
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: . As demands upon available water supplies increase, there is an accompanying increase in the need to assess the downstream consequences resulting from changes at specific locations within a hydrologic system. The problem is approached in this study by hybrid computer simulation of the hydrologic system. Modeling concepts are based upon the development of basic relationships which describe the various hydrologic processes. Within a system these relationships are linked by the continuity-of-mass principle. Spatial resolution is achieved by considering the modeled areas as a series of subbasins. The time increment adopted for the model is one month, so that time varying quantities are expressed in terms of mean monthly values. The model is general in nature and is applied to a particular hydrologic system through a programmed verification procedure whereby model coefficients are evaluated for the particular system. In this study the model is applied to the Bear River basin of western Wyoming, southern Idaho, and northern Utah. Comparisons between observed and computed outflow hydrographs show good agreement. The utility of the model is demonstrated by predicting the effects of various possible water resource management alternatives. The verified hybrid computer program can be digitized for application to the digital computer.
    Type of Medium: Electronic Resource
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