Hydrocarbon Gas Geochemistry in Offshore Otway and Gippsland Basin Sediments, 1988

Light hydrocarbon gas measurements from 342 sediment locations on the continental shelf and slope of Australia's Otway and Gippsland Basins. The data was collected during a 21-day research cruise in April/May 1988 by the BMR vessel 'Rig Seismic' under Project 9131.20. It identifies 42 locations with evidence of thermogenic hydrocarbons in near-surface sediments.

Use Cases

• Identify potential hydrocarbon source rocks based on thermogenic gas evidence in sediments.
• Assess hydrocarbon source maturity based on wet gas content ratios (C2-C4/C1-C4).
• Model near-surface faulting intensity by correlating it with total gas concentrations.
• Integrate geochemical data with thermal maturation models to characterize source rock potential.

Strengths

• Data from 342 specific sampling locations provides spatial coverage of the basins.
• Identifies 42 locations with thermogenic hydrocarbons, including 32 in Otway and 10 in Gippsland.
• Results are integrated with thermal maturation modeling and well data for interpretation.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from a preliminary report dated 1988; freshness should be verified.

Provenance

Source

Australian Ocean Data Network

Collection Method

Ship-based geochemical and sedimentological research program.

Time Range

April/May 1988

Freshness

Last updated 2026-05-04 23:27:41.900673; freshness should be verified

Geography

Offshore Otway Basin (17 days) and Gippsland Basin (4 days), Australia