Summerhayes, Colin P; Gilbert, Deborah (1982): Characteristics, pyrolysis, age, lithology, sedimentation rate, organic matter, and thermal alteration index at DSDP Leg 67 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.817561
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Abstract:
Marine-derived amorphous organic matter dominates hemipelagic and trench sediments in and around the Middle America Trench. These sediments contain, on the average, 1% to 2% total organic carbon (TOC), with a maximum of 4.8%. Their organic facies and richness reflect (1) the small land area of Guatemala, which contributes small amounts of higher land plant remains, and (2) high levels of marine productivity and regionally low levels of dissolved oxygen, which encourage deposition and preservation of marine organic remains. These sediments have good potential for oil but are now immature. For this reason, gaseous hydrocarbons like the ethane identified in the deep parts of the section, as at Sites 496 and 497, are probably migrating from a mature section at depth. The pelagic sediments of the downgoing Cocos Plate are lean in organic carbon and have no petroleum potential
Related to:
Summerhayes, Colin P; Gilbert, Deborah (1982): Distribution, origin, and hydrocarbon potential of organic matter in sediments from the Pacific Margin of Guatemala. In: Abouin, J; von Huene, R; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 67, 595-599, https://doi.org/10.2973/dsdp.proc.67.127.1982
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 12.828613 * Median Longitude: -90.889433 * South-bound Latitude: 12.496300 * West-bound Longitude: -91.037700 * North-bound Latitude: 13.063700 * East-bound Longitude: -90.795200
Date/Time Start: 1979-05-17T00:00:00 * Date/Time End: 1979-06-12T00:00:00
Event(s):
67-494A * Latitude: 12.716800 * Longitude: -90.932800 * Date/Time: 1979-05-17T00:00:00 * Elevation: -5472.0 m * Penetration: 366.5 m * Recovery: 91.3 m * Location: North Pacific/TRENCH * Campaign: Leg67 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 35 cores; 329 m cored; 0 m drilled; 27.8 % recovery
67-495 * Latitude: 12.496300 * Longitude: -91.037700 * Date/Time: 1979-05-26T00:00:00 * Elevation: -4140.0 m * Penetration: 455.5 m * Recovery: 333.7 m * Location: North Pacific/TRENCH * Campaign: Leg67 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 446 m cored; 9.5 m drilled; 74.8 % recovery
67-496 * Latitude: 13.063700 * Longitude: -90.795200 * Date/Time: 1979-05-30T00:00:00 * Elevation: -2049.0 m * Penetration: 378 m * Recovery: 191.9 m * Location: North Pacific/TRENCH * Campaign: Leg67 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 349.5 m cored; 19 m drilled; 54.9 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Summerhayes, CP; Gilbert, D (1982): (Table 4) Characteristics of bitumen or soluble organic matter at DSDP Holes 67-499 and 67-497. https://doi.org/10.1594/PANGAEA.817560
- Summerhayes, CP; Gilbert, D (1982): (Table 1) Age, lithology, sedimentation rate, organic matter, and thermal alteration index at DSDP Leg 67 Holes. https://doi.org/10.1594/PANGAEA.817558
- Summerhayes, CP; Gilbert, D (1982): (Table 3) Interpretation of pyrolysis analyses at DSDP Leg 67 Holes. https://doi.org/10.1594/PANGAEA.817559