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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Geo-marine letters 16 (1996), S. 115-122 
    ISSN: 1432-1157
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Until recently heavy-mineral studies of marine sediments were largely restricted to sand fractions. New techniques permitting analysis of decalcified silt fractions have been applied to sediments off the southeastern United States. Our data, which confirm predictions from the basic relationship among grain size, specific gravity, and equivalent hydraulic transport behavior, show that concentrations and average diameters of the silt heavy minerals progressively decrease seaward. Heavy minerals always constitute a substantially greater weight percent of the silt than of the sand fraction. Despite corroded surface textures suggestive of extensive weathering and dissolution, spatial trends in the detrital heavy-mineral populations are predominantly controlled by source and hydraulic factors.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 1996-06-01
    Print ISSN: 0276-0460
    Electronic ISSN: 1432-1157
    Topics: Geosciences
    Published by Springer
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  • 3
    Publication Date: 1987-07-01
    Print ISSN: 1527-1404
    Electronic ISSN: 1938-3681
    Topics: Geosciences
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  • 4
  • 5
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    Unknown
    PANGAEA
    In:  Supplement to: Commeau, J A; Manheim, Frank T (1982): Testing the variation of Fe-Mn concentration as a function of preparation treatment for phosphate-manganese nodules from the Blake Plateau. (Expedition GYRE 82-11), Cruise Note. USGS Woods Hole Coastal and Marine Science Center
    Publication Date: 2023-08-28
    Description: Sample preparation technique is critical for valid chemical analyses. A main source of error comes from the fact that the great specific surface area of crusts or nodules enhances their tendency to retain or attract hygroscopic moisture. Variable treatment of this moisture can in extreme cases lead to analytical value differences as great as 40-50 %. In order to quantify these influences, samples of ferromanganese oxide-phosphorite pavement from the Blake Plateau have been subjected to various drying techniques before analysis using X-ray fluorescence.
    Keywords: 82034 G-11-82-SE; Blake Plateau, Atlantic Ocean; C6-Sta3; C9-Sta14; Calcium; D10-Sta18 - Patio Block; D11-Sta19 - Patio Block; D12-Sta23; D14-Sta24; D15-Sta25 - Southwest Blake Plateau Triple Junctio; D16-Sta26 - South Blake Plateau; D17-Sta27; D1-Sta2A; D2-Sta6; D3-Sta7; D4-Sta7; D5-Sta8; D8-Sta15; D9-Sta17; Date/Time of event; Description; Dredge, rock; DRG_R; Elevation of event; Event label; GC; Gravity corer; Gyre; GYRE82-11; GYRE82-11-C06; GYRE82-11-C09; GYRE82-11-D01; GYRE82-11-D02; GYRE82-11-D03; GYRE82-11-D04; GYRE82-11-D05; GYRE82-11-D08; GYRE82-11-D09; GYRE82-11-D10; GYRE82-11-D11; GYRE82-11-D12; GYRE82-11-D14; GYRE82-11-D15; GYRE82-11-D16; GYRE82-11-D17; Heated at 500°C for one hour; Ignited at 1000°C for one hour; Iron; Latitude of event; Longitude of event; Loss on drying; Loss on ignition; Manganese; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Oven-dry, heated at 110°C overnight; Sample ID; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 128 data points
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  • 6
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Poppe, L J; Commeau, R F; Commeau, J A; Manheim, Frank T; Aruscavage, P J (1984): Ferromanganese micronodules from the surficial sediments of Georges Bank. Journal of Marine Research, 42(2), 463-472, https://doi.org/10.1357/002224084788502765
    Publication Date: 2023-08-28
    Description: Ferromanganese micronodules have been found on Georges Bank, off the U.S. northeast coast, distributed throughout the surficial sediments within an area about 125 km long and at least 12 km wide. These coarse, sand-sized concretions have precipitated from metal-rich interstitial waters and contain many of the textural and structural features common to other neritic nodules. Most of the nodules have accreted around detrital grains, and X-ray powder diffraction analyses indicate the presence of geothite and vernadite ( delta -MnO sub(2)) in the ferromanganese layers. Chemical analyses of the micronodules, when compared with similar data on deep-sea manganese nodules, reveal lower Mn/Fe ratios, significantly higher concentrations of V and As, comparable values of Mo, and an order of magnitude less of Co, Ni, Ce and most other, metals.
    Keywords: AB3_101; AB3101-W167; AB3101-W169; AB3101-W180; AB4_11; AB411-2545K; Albatross III (1948-1959); Albatross IV (1963); Atlantic Ocean; Comment; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; GOS22; GOS22-1114; GOS22-1123; Gosnold; Grab; GRAB; Identification; Latitude of event; Longitude of event; Method/Device of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sediment type; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 42 data points
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  • 7
    Publication Date: 2023-09-25
    Description: Eighteen stations were occupied; 13 dredge hauls were collected on seamount, atoll, and island flanks and three box cores were taken from the sediment cap of an unnamed seamount in the north Marshall Islands. Every dredge haul recovered ferromanganese-oxide crusts, agreeing with the inferences of Halbach and Feller (1980) that crusts form on every hard substrate where currents or other factors preclude significant sedimentation. These samples can be viewed and studied at the U.S. Geological Survey offices in Menlo Park, California.
    Keywords: 10.012; 10.013; 10.014; 11.015; 13.017; 14.018; 5.006; Comment; Deposit type; DEPTH, sediment/rock; Description; Dredge, chain bag; Dredge, rock; DRG_C; DRG_R; Elevation of event; Event label; Geochemistry; Identification; L9-84-CP; L984CP-D1; L984CP-D12; L984CP-D13; L984CP-D14; L984CP-D15; L984CP-D17; L984CP-D18; L984CP-D4; L984CP-D6; Latitude of event; Longitude of event; Majuro Atoll (S0.001); manganese micronodule; manganese nodule; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; Position; Quantity of deposit; S0.004; Samuel P. Lee; sediment; Sediment type; Size; Substrate type
    Type: Dataset
    Format: text/tab-separated-values, 75 data points
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  • 8
    Publication Date: 2023-09-25
    Description: The average chemical metal composition of ferromanganese crusts was determined through various samples dredged during the L9-84-CP (R/V S.P. Lee) expedition by the United States Geological Survey. The composition in major elements was made using X-ray fluorescence (XRF) after drying at 110°C.
    Keywords: 10.012; 10.013; 10.014; 11.015; 13.017; 14.018; 5.006; Aluminium; Calcium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; Dredge, chain bag; Dredge, rock; DRG_C; DRG_R; Elevation of event; Event label; Geochemistry; Identification; Iron; L9-84-CP; L984CP-D1; L984CP-D12; L984CP-D13; L984CP-D14; L984CP-D15; L984CP-D17; L984CP-D18; L984CP-D4; L984CP-D6; Latitude of event; Longitude of event; Magnesium; Majuro Atoll (S0.001); Manganese; manganese micronodule; manganese nodule; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; Phosphorus; Potassium; S0.004; Samuel P. Lee; sediment; Silicon; Thickness; Titanium; X-ray fluorescence spectrometry
    Type: Dataset
    Format: text/tab-separated-values, 135 data points
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  • 9
    Publication Date: 2023-11-23
    Description: Beginning in 1983 the USGS searched major oceanographic institution dredge archives for samples and data relevant to the USGS Woods-Hole Ferromanganese Crust Data Base. With the cooperation of the institutions more than 600 samples were collected from twelve institutions and brought to the U.S. Geological Survey Branch of Atlantic Marine Geology in Woods Hole, Mass, for geochemical analysis. At USGS Woods-Hole, 2.0 cm thick mini-slabs from ferromanganese crust or nodule outer surface were separated into horizons and layers. They were ground and sieved through a 105 micron nylon mesh. Remaining ferromanganese material was removed by washing with 10 percent hydroxylamine hydrochloride (NH2OH.HCL) and 1 percent oxalic acid. Samples were first dried at 110°C overnight for the determination of hydroscopic water (H2O-). For some samples, the structural water content was determined by the loss (Loss at Ignition (LOI)) from heating at 500°C for one hour followed by a heating at 1000°C for one more hour. Major and minor element concentrations were determined by X-ray fluorescence spectrometry.
    Keywords: 10.012; 10.013; 10.014; 11.015; 13.017; 14.018; 5.006; 7TOW_5; 7TOW_6; 7TOW05WT; 7TOW05WT-089D; 7TOW05WT-101D; 7TOW06WT; 7TOW06WT-123D; 7TOW06WT-129D; 7TOW06WT-130D; 7TOW06WT-134D; 7TOW06WT-137D; 7TOW06WT-142D; 7TOW06WT-143D; 7TOW06WT-144D; 7TOW-089D; 7TOW-101D; 7TOW-123D; 7TOW-129D; 7TOW-130D; 7TOW-134D; 7TOW-137D; 7TOW-142D; 7TOW-143D; 7TOW-144D; A210706; A210707; A-266/D-40; A-266/D-41; AII70-06; AII70-07; Aluminium; Argo; ARIES; ARIES-007D; ARIES-009D; ARIES-013D; ARIES-019D; ARIES-020D; ARIES-024D; ARIES-025D; ARIES-027D; ARIES-029D; AT26601; AT266-40; AT266-41; AT29600; AT296-03; AT-II-10706-1; AT-II-10706-39; AT-II-10706-40; AT-II-10706-60; AT-II-10706-65; AT-II-10706-66; AT-II-10706-67; AT-II-10707-15; AT-II-10707-17; AT-II-10707-18; AT-II-10707-23; AT-II-10707-25; Atlantic Ocean; Atlantis (1931); Atlantis II (1963); Calcium; CH11506; CH-11-9RD; Chain; Cobalt; D413A; Deposit type; DEPTH, sediment/rock; DISTANCE; Distance, maximum; Distance, minimum; DODO; DODO-009D-2; DODO-011D; DODO-013D; DODO-014D; DODO-015D-1; Dredge; Dredge, box; Dredge, chain bag; Dredge, rock; DRG; DRG_B; DRG_C; DRG_R; Elevation of event; Event label; FFGR; Free-fall grab; Geochemistry; Gillis cruise GS7202; Gillis cruise GS7308; GS7202-057-06; GS7308-011-06; GS7308-012B-06; GS7308-013-06; GS7308-014-06; GS7308-015-06; GS7308-016-06; Identification; Iron; Kana Keoki; KK760806; KK760806-01,KK760806-02,KK76; KK760806-02-RD18; KK810626-02; KK810626-2-RD09; KK810626-2-RD10; L583HU/009/D6; L583HU/010/D7AX.L583HU/010/D7FX; L583HW; L583HW/005/PC2A; L583HW/006/PC3A; L583HW/008/D5BX.L583HW/008/D5CX; L583HW/012/D8A; L583HW/014/D10; L583HW/019/D12A; L583HW/021/D14A; L583HW/022/D15B; L583HW/024/D17A; L583HW/026/D18; L583HW/040/D23; L583HW/041/D24; L583HW/045/D27; L583HW/046/D28; L583HW-D10; L583HW-D12; L583HW-D14; L583HW-D15; L583HW-D17; L583HW-D18; L583HW-D23; L583HW-D24; L583HW-D27; L583HW-D28; L583HW-D5; L583HW-D6; L583HW-D7; L583HW-D8; L583HW-PC002; L583HW-PC003; L882NP; L882NP-01-D3; L882NP-02-D4; L9-84-CP; L984CP-D1; L984CP-D12; L984CP-D13; L984CP-D14; L984CP-D15; L984CP-D17; L984CP-D18; L984CP-D4; L984CP-D6; Laboratory code/label; Latitude of event; Longitude of event; Loss on ignition; Magnesium; Majuro Atoll (S0.001); Manganese; manganese micronodule; manganese nodule; MIDPAC I; MIDPAC IIa; MIDPAC IIb; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Pacific Ocean; ocean; Pacific Ocean; Pacific Oean; PC; Phosphorus; Piston corer; Potassium; RSMAS-BIO; S0.004; S679NP; S679NP-D1; S679NP-D2; S679NP-D4; S679NP-D9; Samuel P. Lee; Sea Sounder; sediment; Silicon; SO18; SO18_111; SO18_113; SO18_30; SO18_31; SO18_32; SO18_43; SO18_44; SO18_50; SO18_57; SO18_58; SO18_73; SO18_75; SO18_76; SO18_78; SO33; SO33_15DK; SO33_17DK; SO33_18DK; SO33_1DK; SO33_2DK; SO33_33DS; SO33_34DK; SO33_37DK; SO33_38DK; SO33_39DK; SO33_3DK; SO33_40DK; SO33_44DK; SO33_47DK-AM; SO33_48DK; SO33_49DK; SO33_69DK; SO33_6DK; SO33_71DK; SO33_72DK; SO33_8DK; SO33_9DK; SO37; SO37_10DK; SO37_15DS; SO37_17DS; SO37_19DS; SO37_20DS; SO37_21GK; SO37_29DS; SO37_30DS; SO37_36DS; SO37_37DS; SO37_40DS; SO37_43DS; SO37_44DS; SO37_46DS; SO37_47DS; SO37_5DK; SO37_9DK; Sonne; SPAC; Spade Corer; STA18; STA19; STA34; TASADAY; Thomas Washington; Titanium; TSDY-1D; TSDY-3D; Water in rock; Wet chemistry; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 5327 data points
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  • 10
    Publication Date: 2023-11-23
    Description: The cooperative cruise of the R/V S.P. Lee in 1983 provided an excellent opportunity for a wide-range interlaboratory study on samples of crusts ground and sieved aboard the vessel. Analytical data on splits of approximately 56 samples were performed by the U.S. Geological Survey laboratories in Reston Virginia and Woods Hole Massachusetts, (see Chapter V), the Bureau of Mines laboratory in Avondale, Maryland, and the laboratory of the German Geological Survey in Hannover, Federal Republic of Germany. At USGS Woods-Hole, 2.0 cm thick mini-slabs from ferromanganese crust or nodule outer surface were separated into horizons and layers. They were ground and sieved through a 105 micron nylon mesh. Remaining ferromanganese material was removed by washing with 10 percent hydroxylamine hydrochloride (NH2OH.HCL) and 1 percent oxalic acid. Samples were first dried at 110°C overnight for the determination of hydroscopic water (H2O-). Major and minor element concentrations were determined by X-ray fluorescence spectrometry.
    Keywords: Aluminium; Calcium; Chromium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; DISTANCE; Distance, maximum; Distance, minimum; Dredge, chain bag; DRG_C; Elevation of event; Event label; Geochemistry; Identification; Iron; L583HU/009/D6; L583HU/010/D7AX.L583HU/010/D7FX; L583HW; L583HW/001/D1A; L583HW/005/PC2A; L583HW/012/D8A; L583HW/014/D10; L583HW/019/D12A; L583HW/021/D14A; L583HW/022/D15B; L583HW/024/D17A; L583HW/026/D18; L583HW/040/D23; L583HW/041/D24; L583HW/042/D25; L583HW/045/D27; L583HW/046/D28; L583HW/049/D31; L583HW/050/D32; L583HW-D1; L583HW-D10; L583HW-D12; L583HW-D14; L583HW-D15; L583HW-D17; L583HW-D18; L583HW-D23; L583HW-D24; L583HW-D25; L583HW-D27; L583HW-D28; L583HW-D31; L583HW-D32; L583HW-D6; L583HW-D7; L583HW-D8; L583HW-PC002; Laboratory code/label; Latitude of event; Lead; Longitude of event; Magnesium; Manganese; manganese micronodule; manganese nodule; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PC; Phosphorus; Piston corer; Samuel P. Lee; sediment; Silicon; Strontium; Titanium; Water in rock; Wet chemistry; X-ray fluorescence spectrometry; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 1029 data points
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