Seismic Facies Mapping of the Mentelle Basin Post-Rift Succession

2008-09 2D seismic data acquired by Geoscience Australia provides a detailed study of the post-rift depositional history of the Mentelle Basin. The analysis identified fourteen distinct seismic facies based on reflection continuity, amplitude, frequency, and geometry. The study uses stratigraphic constraints from wells DSDP 258 and DSDP 264 and comparisons to the south Perth Basin.

Use Cases

• Classify seismic facies based on reflection continuity, amplitude, and internal configuration to interpret depositional environments.
• Map the distribution of channel and channel fill features, mounded facies, and progradational wedges to reconstruct paleogeography.
• Correlate seismic facies with lithological data from DSDP wells 258 and 264 to ground-truth interpretations of deep marine mudstones and other units.
• Analyze stratal geometries and external shapes like basin-fill and wedge facies to model subsidence history and sedimentation rates.
• Study the transition from syn-depositional volcanism to thermal subsidence facies to understand post-rift basin evolution from Valanginian to Campanian.

Strengths

• Analysis based on 2D seismic data acquired in a dedicated 2008-09 survey.
• Fourteen distinct seismic facies defined using multiple reflection attributes.
• Age and lithology constraints provided by two Deep Sea Drilling Project (DSDP) wells.

Limitations

• Specific row count, column count, and data file size are unknown.
• Data is derived from a single survey period (2008-09), limiting temporal analysis.
• Geographic focus is exclusively on the Mentelle Basin, a frontier region.

Provenance

Source

Geoscience Australia via the Australian Ocean Data Network.

Collection Method

Interpretation of acquired 2D seismic data and integration with DSDP well logs.

Time Range

Geological study covers Valanginian to Campanian periods; data acquired 2008-09.

Freshness

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Geography

Mentelle Basin, located approximately 200 km southwest of Perth, Australia.