10.1594/PANGAEA.759922
Snowdon, Lloyd R
Lloyd R
Snowdon
0000-0003-3430-5243
Meyers, Philip A
Philip A
Meyers
0000-0002-9709-7528
Vitrinite reflectance and carbon chemistry of ODP Leg 122 samples (Table 1)
PANGAEA
1992
Event label
Sample code/label
DEPTH, sediment/rock
Stage
Vitrinite reflection
Carbon, organic, total
Pyrolysis temperature maximum
Hydrogen index, mass HC, per unit mass total organic carbon
Oxygen index, mass CO2, per unit mass total organic carbon
Drilling/drill rig
DSDP/ODP/IODP sample designation
Rock eval pyrolysis (Behar et al., 2001)
Leg122
Joides Resolution
Ocean Drilling Program (ODP)
1988-07-09T07:00:00/1988-07-19T00:45:00
en
Supplementary Dataset
10.2973/odp.proc.sr.122.131.1992
21 data points
text/tab-separated-values
Creative Commons Attribution 3.0 Unported
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.
Sediment depth is given in mbsf. Vitrinite reflectance measurements (%Ro) made by W. Kalkreuth at the Geological Survey of Canada.
Supplement to: Snowdon, Lloyd R; Meyers, Philip A (1992): Source and maturity of organic matter in sediments and rocks from Sites 759, 760, 761, and 764 (Wombat Plateau) and Sites 762 and 763 (Exmouth Plateau). In: von Rad, U; Haq, BU; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 122, 309-315
115.5411
115.5605
-16.954
-16.922
South Indian Ridge, South Indian Ocean