BMR Cruise 067: Geological Samples and Heatflow Data from the Otway and Sorell Basins

Geoscience Australia Data collected geological, geochemical, and heatflow data during a 29-day research cruise in early 1987. Scientists aboard R.V. Rig Seismic occupied 130 sampling stations using dredges, corers, grabs, and a heatflow probe across the Otway Basin and west Tasmanian margin. The samples include Paleozoic volcanics, Cretaceous to Tertiary sedimentary rocks, and Quaternary sediments, all taken along seismic profiles.

Use Cases

• Modeling hydrocarbon maturation zones based on heatflow calculations from 20 stations
• Analyzing the distribution of thermogenic hydrocarbons based on headspace gas analyses
• Developing sedimentation models based on a variety of recovered Quaternary sediments
• Correlating rock ages with water depth based on the observation that older rocks were found further down the continental slope
• Assessing regional geological framework by incorporating sample results from seismic profiles

Strengths

• Data collection involved 130 sampling stations, providing broad spatial coverage.
• Heatflow calculations from 20 stations provide quantitative thermal data.
• Samples were taken along seismic profiles, enabling integration with regional geological frameworks.
• Recovered a great variety of rock types spanning from Paleozoic to Quaternary periods.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic and temporal bias inherent to the specific 1987 cruise.

Provenance

Source

Geoscience Australia Data

Collection Method

Marine sampling via dredges, corers, grabs, and a heatflow probe from R.V. Rig Seismic.

Time Range

Early 1987 (29-day cruise)

Freshness

Last updated 2026-05-14 05:15:01.816958; freshness should be verified.

Geography

Otway Basin and Sorell Basin of the west Tasmanian margin, Australia