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  • 1
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    PANGAEA
    In:  Supplement to: Hartung, Birgitta; Mukhopadhyay, Prasanta K; Rullkötter, Jürgen; Schaefer, Rainer G; Welte, Dietrich Hugo (1985): Petrography and geochemistry of organic matter in Cretaceous sediments from the Goban Spur, Deep Sea Drilling Project Leg 80. In: De Graciansky, PC; Poag, CW; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Gov. Printing Office), 80, 983-991, https://doi.org/10.2973/dsdp.proc.80.145.1985
    Publication Date: 2023-05-12
    Description: Three lower Barremian to middle/upper Cenomanian samples from DSDP Hole 549 and three lower Cenomanian to lower Maestrichtian samples from DSDP Hole 550B were investigated by organic geochemical and organic petrographic methods. The samples came from wells drilled in the area of the Goban Spur in the northeastern Atlantic; they represent gray to greenish gray carbonaceous mud or siltstones from the deeper parts of the Cretaceous sequences penetrated and light-colored chalks from the shallower ones. The total amount of organic carbon is below 1% in all samples; it is especially low in the Cenomanian to Maestrichtian chalks. Terrigenous organic matter predominates; only the Barremian sample shows a moderate number of marine phytoclasts. As indicated by several parameters, the maturity of the organic matter is low, corresponding to about 0.4% vitrinite reflectance.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 2
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    PANGAEA
    In:  Supplement to: Mukhopadhyay, Prasanta K; Rullkötter, Jürgen; Schaefer, Rainer G; Welte, Dietrich Hugo (1986): Facies and diagenesis of organic matter in Nankai Trough sediments, Deep Sea Drilling Project Leg 87A. In: Kagami, H; Karig, DE; Coulbourn, WT; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 87, 877-889, https://doi.org/10.2973/dsdp.proc.87.134.1986
    Publication Date: 2023-05-12
    Description: A series of upper Pliocene to Pleistocene sediment samples from DSDP Sites 582 and 583 (Nankai Trough, active margin off Japan) were investigated by organic geochemical methods including organic carbon determination, Rock- Eval pyrolysis, gas chromatography of extractable hydrocarbons, and kerogen microscopy. The organic carbon content is fairly uniform and moderately low (0.35 to 0.77%) at both sites, although accompanied by high sedimentation rates. The low organic matter concentrations are the result of the combined effect of several factors: low bioproductivity, oxic depositional environment, and dilution with lithogenic material. Organic petrography revealed a mixture of three maceral types: (1) fresh, green fluorescent alginites of aquatic origin probably transported by turbidites from the shelf edge, (2) gelified huminites and paniculate liptinites derived from the erosion of unconsolidated peat, and (3) highly reflecting inertinites derived from continental erosion. By a combination of organic petrography and Rock-Eval pyrolysis results, the organic matter is characterized as mainly type III kerogen with a slight tendency to a mixed type II-III. During Rock-Eval pyrolysis, a mineral matrix effect on the generated hydrocarbons was observed. The organic matter in all sediments has a low level of maturity (below 0.45% Rm) and has not yet reached the onset of thermal hydrocarbon generation according to several geochemical maturation parameters. This low maturity is in contrast to anomalously high extract yields at both sites and large hydrocarbon proportions in the extracts at Site 583. This contrast may be due to early generation of polar compounds and perhaps redistribution of hydrocarbons caused by subduction tectonics. Carbon isotope data of the interstitial hydrocarbon gases indicate their origin from bacterial degradation of organic matter, although only very few bacterially degraded maceral components were detected.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 3
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    Unknown
    PANGAEA
    In:  Supplement to: Rullkötter, Jürgen; Mukhopadhyay, Prasanta K; Schaefer, Rainer G; Welte, Dietrich Hugo (1984): Geochemistry and petrography of organic matter in sediments from Deep Sea Drilling Project Sites 545 and 547, Mazagan Escarpment. In: Hinz, K; Winterer, EL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 79, 775-806, https://doi.org/10.2973/dsdp.proc.79.132.1984
    Publication Date: 2023-05-12
    Description: A series of sediment samples of probable Triassic to Miocene age from DSDP Sites 545 and 547 seaward of the Mazagan Plateau on the Northwest African Continental Margin off Morocco were investigated by organic geochemical methods including organic carbon determination, Rock-Eval pyrolysis, gas chromatography and combined gas chromatography/ mass spectrometry (GC/MS) of extractable hydrocarbons, and kerogen microscopy. The total organic matter content and the organofacies types are significantly variable, but a generally strong influence of terrigenous organic matter was found in all sediments. The organic matter preservation at Sites 545 and 547 was controlled by the intensity of the terrigenous organic matter supply from the nearby continent, which appeared to be particularly strong during the Cretaceous and had diminished at least by early Miocene times. A noticeable amount of marine organic matter has been preserved in the deep-water sediments by a sequence of processes starting with primary deposition in oxygen-depleted shallow waters on the outer shelf followed by downslope transport and rapid burial at the continental rise. These mass movements happened in the Eocene and throughout the Cretaceous as far as this process could be traced by the sedimentary record. Thin black shale layers in the Jurassic interval at Site 547 indicate strongly fluctuating organic matter preservation conditions probably also controlled by the intensity of terrigenous organic matter supply. All of the primary organic matter except that in the Triassic sediment was thermally immature as expressed by low vitrinite reflectance values and an abundance of olefins in the extractable hydrocarbons.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 4
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    PANGAEA
    In:  Supplement to: Rullkötter, Jürgen; Mukhopadhyay, Prasanta K; Welte, Dietrich Hugo (1984): Geochemistry and petrography of organic matter in sediments from Hole 530A, Angola Basin, and Hole 532, Walvis Ridge, Deep Sea Drilling Project. In: Hay, WW; Sibuet, J-C; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 75, 1069-1087, https://doi.org/10.2973/dsdp.proc.75.138.1984
    Publication Date: 2023-06-27
    Description: Seventeen sediment samples of Albian-Cenomanian to early Pliocene age from DSDP Hole 530A in the Angola Basin and six sediment samples of early Pliocene to late Pleistocene age from the Walvis Ridge were investigated by organic geochemical methods, including organic carbon determination, Rock-Eval pyrolysis, gas chromatography and combined gas chromatography/mass spectrometry of extractable hydrocarbons, and kerogen microscopy. The organic matter in all samples is strongly influenced by a terrigenous component from the nearby continent. The amount of marine organic matter present usually increases with the total organic carbon content, which reaches an extreme value of more than 10% in a Cenomanian black shale from Hole 530A. At Site 530 the extent of preservation of organic matter in the deep sea sediments is related to mass transport down the continental slope, whereas the high organic carbon contents in the sediments from Site 532 reflect both high bioproductivity in the Benguela upwelling regime and considerable supply of terrigenous organic matter. The maturation level of the organic matter is low in all samples.
    Keywords: 75-530A; 75-532; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg75; South Atlantic; South Atlantic/RIDGE
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
    Publication Date: 2023-06-27
    Keywords: 93-603; 93-603B; 93-603C; Aromatic hydrocarbon fraction; Carbon analyser, LECO; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Epoch; Event label; Extract; Gas chromatography; Glomar Challenger; Heterocomponents; Hydrocarbons; Leg93; Liquid chromatography; Nonaromatic hydrocarbon fraction; Sample code/label; Total extract from total organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 160 data points
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  • 6
    Publication Date: 2023-06-27
    Keywords: 93-603; 93-603B; 93-603C; Carbon, organic, total; Carbon analyser, LECO; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Epoch; Event label; Glomar Challenger; Hydrogen index, mass HC, per unit mass total organic carbon; Leg93; Lithologic unit/sequence; Lithology/composition/facies; Oxygen index, mass CO2, per unit mass total organic carbon; Production index, S1/(S1+S2); Pyrolysis temperature maximum; Rock eval pyrolysis (Espitalié et al. 1977); Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 178 data points
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  • 7
    Publication Date: 2023-06-27
    Keywords: 93-603; 93-603B; 93-603C; Alginite; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Epoch; Event label; Fluorescent microscope; Glomar Challenger; Huminite; Huminite/vitrinite ratio; Inertinite; Leg93; Liptinite; Organic matter, amorphous; Plankton; Pyrite; Sample code/label; Sporinite; Thermal alteration index, description; Vitrinite reflection; Vitrinite reflection, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 238 data points
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  • 8
    Publication Date: 2023-06-27
    Keywords: 87-582; 87-582A; 87-582B; 87-583; 87-583B; 87-583D; 87-583F; Area/locality; Carbon, organic, total; Comment; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Element analyser CS, LECO; Event label; Glomar Challenger; Hydrogen index, mass HC, per unit mass total organic carbon; Leg87; Lithology/composition/facies; North Pacific; Oxygen index, mass CO2, per unit mass total organic carbon; Period; Production index, S1/(S1+S2); Pyrolysis temperature maximum; Rock eval pyrolysis (Behar et al., 2001); Rock eval pyrolysis (Espitalié et al. 1977); Sample code/label; Sample comment
    Type: Dataset
    Format: text/tab-separated-values, 514 data points
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  • 9
    Publication Date: 2023-06-27
    Keywords: 87-582; 87-582B; 87-583; 87-583D; 87-583F; Carbon Preference Index; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Leg87; North Pacific; Peak area integration using a Kratos-Instem Datachrom II system; Pristane/n-heptadecane ratio; Pristane/n-octadecane; Pristane/Phytane ratio; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 133 data points
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  • 10
    Publication Date: 2023-06-27
    Keywords: 87-582; 87-582B; 87-583; 87-583D; 87-583F; Alginite; Bitumen; Carbon, organic, total; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Element analyser CS, LECO; Event label; Flow-blending extraction technique (Radke et al., 1978); Glomar Challenger; Humic compounds; Huminite/vitrinite ratio; Huminite reflection; Huminite reflection, standard deviation; Inertinite; Leg87; Liptinite; North Pacific; Reflection, minimum; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 247 data points
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