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  • Data  (172)
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  • 1
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    Interstitial water chemistry at DSDP Leg 82 Holes
    PANGAEA
    In:  Supplement to: Gieskes, Joris M; Johnston, Kirk; Boehm, Marcus (1985): Interstitial water studies, Central North Atlantic. In: Bougault, H; Cande, SC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 82, 539-542, https://doi.org/10.2973/dsdp.proc.82.131.1985
    Details
    Publication Date: 2023-05-12
    Description: Interstitial waters were collected at only two sites during Leg 82, Sites 558 and 563. Only very small changes in dissolved calcium and magnesium occur, presumably resulting from reactions in the underlying basement basalts. Dissolved strontium profiles indicate maxima, which can be understood in terms of carbonate recrystallization processes. Data on Sr/Ca in carbonates cannot be used to estimate the extent of recrystallization that has occurred in these sediments.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 2
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    Silicate measurements of Site CarmenBasin (2005)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Keywords: BC; Box corer; CarmenBasin; DEPTH, sediment/rock; Event label; Latitude of event; Longitude of event; Silicate; Silicon Cycling in the World Ocean; SINOPS
    Type: Dataset
    Format: text/tab-separated-values, 11 data points
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  • 3
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    (Table 2) Yields and gross composition of extractable organic matter of sediment core Guy-06PC
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Aromatic hydrocarbon fraction; Bitumen; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Guaymas Basin; Guy-06PC; Liquid chromatography; NSO-fraction (fraction of polar compounds); PC; Piston corer; Saturated hydrocarbon fraction
    Type: Dataset
    Format: text/tab-separated-values, 39 data points
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  • 4
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    (Table 3) Molecular ratios of biomarkers in hydrocarbons of sediment core Guy-06PC
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: C-22 S/(S+R) epimer ratio; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Guaymas Basin; Guy-06PC; PC; Phytane/n-octadecane ratio; Piston corer; Pristane/n-heptadecane ratio; Pristane/Phytane ratio; Ratio
    Type: Dataset
    Format: text/tab-separated-values, 113 data points
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  • 5
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    (Table 1) Yields and ratios of volatile hydrocarbons from sediment core Guy-06PC
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 2-Methylpentane; anteiso-Heptane/dimethylcyclopentanes ratio; anteiso-Hexane; Butane; C1/(C2+C3) hydrocarbon ratio; C1/(C2-C5) hydrocarbons ratio; Cyclopentane; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dimethylcyclopentane index; Ethane; Gas chromatography; Guaymas Basin; Guy-06PC; Isobutane; Isopentane; Methane; Methylcyclopentane; n-Butane/2-Methylpropane ratio; n-Heptane; n-Heptane/Toluene ratio; n-Hexane; n-Pentane/2-Methylbuthane ratio; PC; Pentane; Piston corer; Propane
    Type: Dataset
    Format: text/tab-separated-values, 94 data points
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  • 6
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    Carbonate saturation in the water column of station M8_056 off Cap Sao Vincente, Portugal (Table 1)
    PANGAEA
    In:  Supplement to: Gieskes, Joris M (1970): Einige Beobachtungen über Lösungsvorgänge am Boden des Ozeans. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe A Allgemeines, Physik und Chemie des Meeres, Gebrüder Bornträger, Berlin, Stuttgart, A8, 12-17
    Details
    Publication Date: 2023-05-12
    Description: Changes in the dissolved oxygen content, the alkalinity, and the pH in sea water near the ocean floor are interpreted in terms of chemical and biochemical processes at the sediment water interface. A simple model provides a plausible explanation of the observed phenomena. Special emphasis is given to the importance of borate corrections in the calculation of the solution effects of calcium carbonate.
    Keywords: Aragonite saturation; Atlantische Kuppenfahrten 1967/1-3; Calcium carbonate saturation; Carbonate mass; Chloride; DEPTH, water; IFM-GEOMAR; Leibniz-Institut für Meereswissenschaften, Kiel; M8; M8_065-8b; M8056-8b; Meteor (1964); Northeast Atlantic; pH; Temperature, water; Water sample; WS
    Type: Dataset
    Format: text/tab-separated-values, 90 data points
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  • 7
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    Geochemistry of shallow sediments in Guaymas Basin
    PANGAEA
    In:  Supplement to: Simoneit, Bernd R T; Leif, R N; Sturz, Anne Aleda; Sturdivant, A E; Gieskes, Joris M (1992): Geochemistry of shallow sediments in Guaymas Basin, Gulf of California: hydrothermal gas and oil migration and effects of mineralogy. Organic Geochemistry, 18(6), 765-784, https://doi.org/10.1016/0146-6380(92)90046-Z
    Details
    Publication Date: 2023-05-12
    Description: Offset of prograde hydrothermal alterations by retrograde reactions is evident in sediments from a piston core (PC6, 8 m long) from the Guaymas Basin, Gulf of California. Geochemical and mineralogical analyses of sediments and pore fluids show superimposed geochemical signals that indicate currently active reactions are modifying previously formed secondary solids. Hydrothermal barite was formed in a previously active flow channel between 150 and 250 cm depth. Hydrothermal gypsum is presently dissolving at depths 〉780 cm, below which hydrothermal fluid flow is channeled by a secondary dolomite layer. Thermal stress of organic matter generates hydrothermal gas and petroleum having wide ranges of compositions and maturities. A significant amount of hydrothermally generated oil has been transported laterally through a porous debris flow (approx. 240 cm subbottom), overwhelming the indigenous bituminous matter. Water soluble petroleum constituents have disseminated throughout the cored sediments. From 400 to 700 cm depth the immature organic matter continues to experience thermally-enhanced diagenesis, and an even higher thermal stress has occurred at the bottom of the core. Enhanced bacterial degradation of organic matter has led to depletion of pore water sulfate and enrichment of ammonium (NH4+) in both pore fluid and sediment, resulting in formation of NH4+ bearing secondary clay minerals at depths below 780 cm.
    Keywords: Guaymas Basin; Guy-06PC; PC; Piston corer
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 8
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    Interstitial water chemistry at DSDP Leg 79 Holes
    PANGAEA
    In:  Supplement to: Gieskes, Joris M; Johnston, Kirk; Boehm, Marcus (1984): Interstitial water studies, Leg 79. In: Hinz, K; Winterer, EL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 79, 825-834, https://doi.org/10.2973/dsdp.proc.79.134.1984
    Details
    Publication Date: 2023-05-12
    Description: Interstitial water analyses of samples collected at Sites 544-547 of DSDP Leg 79 are presented. In Site 547 chloride concentrations increase to almost 80% of the halite saturation values. Gypsum occurrences in the sediments immediately overlying the halite deposit can be explained in terms of migration of Ca**2+ and SO2**2- from the underlying evaporites. At shallower depths sulfate concentrations decrease rapidly as a result of sulfate reduction processes. The same processes lead to the removal of calcium in the form of calcium carbonate. At Site 547, the chloride concentration depth profile suggests a maximum of dissolved chloride which may be the result of advective flow from nearby (abput 6 km) evaporite salt diapirs.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 9
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    Chemistry of interstitial waters of samples from DSDP Leg 25
    PANGAEA
    In:  Supplement to: Gieskes, Joris M (1974): Interstitial water studies, Leg 25. In: Simpson, ESW; Schlich, R; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Government Print Office), 25, 361-394, https://doi.org/10.2973/dsdp.proc.25.113.1974
    Details
    Publication Date: 2023-06-27
    Description: Interstitial water analyses from sediments collected during Leg 25 of the Deep Sea Drilling Project have revealed that in the southwest Indian Ocean, great chemical activity exists in sediments in various depositional environments. Variable sedimentation rates allow us to set some interesting boundary conditions on chemical and transport processes in these interstitial waters, particularly with regard to the distribution of dissolved sulfate. In terrigenous rapidly deposited sediments, large depletions are observed in magnesium and potassium, whereas relatively small decreases in dissolved calcium occur. In slowly deposited detrital sediments, also, large decreases in potassium and magnesium coincide with very large calcium increases. In truly pelagic sediments, a one to one replacement of magnesium by calcium is observed in the interstitial waters, presumably due to reactions in the basal sediment layers. Biogenous deposits have great influence on dissolved silica (sponge spicules and radiolarians) and on dissolved strontium (carbonate recrystallization). Otherwise, dissolved silica reflects the clay mineralogy and shows variations which seem particularly dependent on the presence or absence of kaolinite. Variable dissolved manganese values reflect reducing conditions and/or availability of manganese in the solid phases for mobilization in reducing sediments.
    Keywords: 25-239; 25-241; 25-242; 25-245_Site; 25-248; 25-249; COMPCORE; Composite Core; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Indian Ocean//BASIN; Indian Ocean//CHANNEL; Indian Ocean//RIDGE; Leg25
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 10
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    Chemistry of interstitial water of samples from DSDP Leg 38
    PANGAEA
    In:  Supplement to: Gieskes, Joris M; Lawrence, James R; Galleisky, Guntwin (1976): Interstitial water studies, Leg 38. In: Talwani, M., Udintsev, G., et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Government Printing Office), 38, 121-133, https://doi.org/10.2973/dsdp.proc.38394041s.112.1978
    Details
    Publication Date: 2023-06-27
    Description: Interstitial waters recovered during Leg 38 show large changes in major ion composition and also in oxygen isotope composition. Increases in Ca[++] and Sr[++] and decreases in K[+], Mg[++], and O18/O16 are interpreted in terms of extensive diagenesis of terrigenous, volcanic, or basaltic igneous materials in the sediments and underlying basalts. Slight, but well-established increases in chlorinity with depth indicate that these postulated weathering reactions involve uptake of water to a measurable extent. Interstitial waters from sites drilled on the Inner Voring Plateau suggest the infusion of fresh waters by aquifers from the mainland of Norway.
    Keywords: 38-336; 38-337; 38-338; 38-339; 38-340; 38-341; 38-342; 38-343; 38-344; 38-345; 38-346; 38-348; 38-349; 38-350; 38-352_Site; COMPCORE; Composite Core; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg38; North Atlantic/Greenland Sea/RIDGE; North Atlantic/Norwegian Sea; North Atlantic/Norwegian Sea/BASIN; North Atlantic/Norwegian Sea/DIAPIR; North Atlantic/Norwegian Sea/PLATEAU; North Atlantic/Norwegian Sea/RIDGE; North Atlantic/RIDGE
    Type: Dataset
    Format: application/zip, 16 datasets
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