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  • 1
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    Geochemical data and magnetic measurements of IODP Expedition 308, Hole U1319A from the Gulf of Mexico (2010)
    PANGAEA
    In:  Supplement to: Fu, Yanzhe; von Dobeneck, Tilo; Franke, Christine; Heslop, David; Kasten, Sabine (2008): Rock magnetic identification and geochemical process models of greigite formation in Quaternary marine sediments from the Gulf of Mexico (IODP Hole U1319A). Earth and Planetary Science Letters, 275(3-4), 233-245, https://doi.org/10.1016/j.epsl.2008.07.034
    Details
    Publication Date: 2023-06-27
    Description: A 160 m mostly turbiditic late Pleistocene sediment sequence (IODP Expedition 308, Hole U1319A) from the Brazos-Trinity intraslope basin system off Texas was investigated with paleo- and rock magnetic methods. Numerous layers depleted in iron oxides and enriched by the ferrimagnetic iron-sulfide mineral greigite (Fe3S4) were detected by diagnostic magnetic properties. From the distribution of these layers, their stratigraphic context and the present geochemical zonation, we develop two conceptual reaction models of greigite formation in non-steady depositional environments. The "sulfidization model" predicts single or twin greigite layers by incomplete transformation of iron monosulfides with polysulfides around the sulfate methane transition (SMT). The "oxidation model" explains greigite formation by partial oxidation of iron monosulfides near the iron redox boundary during periods of downward shifting oxidation fronts. The stratigraphic record provides evidence that both these greigite formation processes act here at typical depths of about 12-14 mbsf and 3-4 mbsf. Numerous "fossil" greigite layers most likely preserved by rapid upward shifts of the redox zonation denote past SMT and sea floor positions characterized by stagnant hemipelagic sedimentation conditions. Six diagenetic stages from a pristine magnetite-dominated to a fully greigite-dominated magnetic mineralogy were differentiated by combination of various hysteresis and remanence parameters.
    Keywords: 308-U1319A; Center for Marine Environmental Sciences; DRILL; Drilling/drill rig; Exp308; Gulf of Mexico Hydrogeology; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; MARUM
    Type: Dataset
    Format: application/zip, 11 datasets
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  • 2
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    Age model of sediment core GeoB6405-6 (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, core correlation via physical properties; Center for Marine Environmental Sciences; Central South Atlantic; DEPTH, sediment/rock; GeoB6405-6; Gravity corer (Kiel type); M46/4; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
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  • 3
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    Age model of sediment core GeoB6407-1 (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, core correlation via physical properties; Center for Marine Environmental Sciences; Central South Atlantic; DEPTH, sediment/rock; GeoB6407-1; Gravity corer (Kiel type); M46/4; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
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  • 4
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    Age model of sediment core GeoB6422-1 (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, core correlation via physical properties; Center for Marine Environmental Sciences; Central South Atlantic; DEPTH, sediment/rock; GeoB6422-1; Gravity corer (Kiel type); M46/4; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
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  • 5
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    Age model of sediment core GeoB6408-4 (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, core correlation via physical properties; Center for Marine Environmental Sciences; Central South Atlantic; DEPTH, sediment/rock; GeoB6408-4; Gravity corer (Kiel type); M46/4; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
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  • 6
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    Age model of sediment core GeoB6428-1 (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, core correlation via physical properties; Center for Marine Environmental Sciences; Central South Atlantic; DEPTH, sediment/rock; GeoB6428-1; Gravity corer (Kiel type); M46/4; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: text/tab-separated-values, 13 data points
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  • 7
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    Age model of sediment core GeoB6425-2 (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Age model; Age model, core correlation via physical properties; Center for Marine Environmental Sciences; Central South Atlantic; DEPTH, sediment/rock; GeoB6425-2; Gravity corer (Kiel type); M46/4; MARUM; Meteor (1986); SL
    Type: Dataset
    Format: text/tab-separated-values, 17 data points
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  • 8
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    Sedimentologic and magnetic data of sediment core GeoB6405-6, complete sample set (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: (NRM/ARM)/Sint-800 ratio; ARM, median destructive field of anhysteretic remanent magnetization; Bartington MS2F spot sensor; Calcium carbonate; Calculated, see reference(s); Center for Marine Environmental Sciences; Central South Atlantic; Chlorite; DEPTH, sediment/rock; Element analyser CHN-O Rapid, Heraeus; GeoB6405-6; Grain size, LASER Particle Sizer; Gravity corer (Kiel type); Illite; Iron; Iron/susceptibility, volume ratio; Kaolinite; M46/4; Magnetic susceptibility, volume; Magnetometer, cryogenic, pass-through, 2G Enterprises 755 R; MARUM; Meteor (1986); NRM, Median destructive field/ARM, Median destructive field ratio; NRM, median destructive field of natural remanent magnetization, alternating field; Opal, auto analysis (Müller & Schneider, 1993); Opal, biogenic silica; Sand; Silt; Size fraction 〈 0.002 mm, clay; SL; Smectite; Synthetic record 800; Terrigenous; X-ray diffraction TEXTUR, clay fraction; X-ray fluorescence core scanner (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 263 data points
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  • 9
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    Sedimentologic and magnetic data of sediment core GeoB6408-4, complete sample set (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: (NRM/ARM)/Sint-800 ratio; ARM, median destructive field of anhysteretic remanent magnetization; Bartington MS2F spot sensor; Calcium carbonate; Calculated, see reference(s); Center for Marine Environmental Sciences; Central South Atlantic; Chlorite; DEPTH, sediment/rock; Element analyser CHN-O Rapid, Heraeus; GeoB6408-4; Grain size, LASER Particle Sizer; Gravity corer (Kiel type); Illite; Iron; Iron/susceptibility, volume ratio; Kaolinite; M46/4; Magnetic susceptibility, volume; Magnetometer, cryogenic, pass-through, 2G Enterprises 755 R; MARUM; Meteor (1986); NRM, Median destructive field/ARM, Median destructive field ratio; NRM, median destructive field of natural remanent magnetization, alternating field; Opal, auto analysis (Müller & Schneider, 1993); Opal, biogenic silica; Sand; Silt; Size fraction 〈 0.002 mm, clay; SL; Smectite; Synthetic record 800; Terrigenous; X-ray diffraction TEXTUR, clay fraction; X-ray fluorescence core scanner (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 266 data points
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  • 10
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    Sedimentologic and magnetic data of sediment core GeoB6407-1, complete sample set (2004)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: (NRM/ARM)/Sint-800 ratio; ARM, median destructive field of anhysteretic remanent magnetization; Bartington MS2F spot sensor; Calcium carbonate; Calculated, see reference(s); Center for Marine Environmental Sciences; Central South Atlantic; Chlorite; DEPTH, sediment/rock; Element analyser CHN-O Rapid, Heraeus; GeoB6407-1; Grain size, LASER Particle Sizer; Gravity corer (Kiel type); Illite; Iron; Iron/susceptibility, volume ratio; Kaolinite; M46/4; Magnetic susceptibility, volume; Magnetometer, cryogenic, pass-through, 2G Enterprises 755 R; MARUM; Meteor (1986); NRM, Median destructive field/ARM, Median destructive field ratio; NRM, median destructive field of natural remanent magnetization, alternating field; Opal, auto analysis (Müller & Schneider, 1993); Opal, biogenic silica; Sand; Silt; Size fraction 〈 0.002 mm, clay; SL; Smectite; Synthetic record 800; Terrigenous; X-ray diffraction TEXTUR, clay fraction; X-ray fluorescence core scanner (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 270 data points
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