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| Main Authors: | , |
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| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
1992
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| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.759922 |
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| _version_ | 1867171776166887424 |
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| author | Snowdon, Lloyd R Meyers, Philip A |
| author_facet | Snowdon, Lloyd R Meyers, Philip A |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A summary of shipboard Rock-Eval measurements shows that organic matter in Upper Triassic siltstone from the Wombat Plateau is dominated by Type III kerogen and is thermally immature. Neocomian siltstone from the Exmouth Plateau similarly contain thermally immature Type III organic matter. Overlying Upper Cretaceous to Quaternary carbonates are poor in organic matter at both locations, yet significant amounts of methane-dominated gas are dissolved in the pore waters of the thick carbonate sequence present on the Exmouth Plateau. This dry gas is believed to have migrated from deeper and more mature strata containing Type III kerogen. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_759922 |
| institution | PANGAEA |
| language | en |
| publishDate | 1992 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Vitrinite reflectance and carbon chemistry of ODP Leg 122 samples (Table 1) Snowdon, Lloyd R Meyers, Philip A 122-759B; 122-760B; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Hydrogen index, mass HC, per unit mass total organic carbon; Joides Resolution; Leg122; Ocean Drilling Program; ODP; Oxygen index, mass CO2, per unit mass total organic carbon; Pyrolysis temperature maximum; Rock eval pyrolysis (Behar et al., 2001); Sample code/label; South Indian Ridge, South Indian Ocean; Stage; Vitrinite reflectance A summary of shipboard Rock-Eval measurements shows that organic matter in Upper Triassic siltstone from the Wombat Plateau is dominated by Type III kerogen and is thermally immature. Neocomian siltstone from the Exmouth Plateau similarly contain thermally immature Type III organic matter. Overlying Upper Cretaceous to Quaternary carbonates are poor in organic matter at both locations, yet significant amounts of methane-dominated gas are dissolved in the pore waters of the thick carbonate sequence present on the Exmouth Plateau. This dry gas is believed to have migrated from deeper and more mature strata containing Type III kerogen. |
| title | Vitrinite reflectance and carbon chemistry of ODP Leg 122 samples (Table 1) |
| topic | 122-759B; 122-760B; Carbon, organic, total; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Hydrogen index, mass HC, per unit mass total organic carbon; Joides Resolution; Leg122; Ocean Drilling Program; ODP; Oxygen index, mass CO2, per unit mass total organic carbon; Pyrolysis temperature maximum; Rock eval pyrolysis (Behar et al., 2001); Sample code/label; South Indian Ridge, South Indian Ocean; Stage; Vitrinite reflectance |
| url | https://doi.org/10.1594/PANGAEA.759922 |