L032 Haddon Downs: Experimental Seismic Survey Data, SA 1957

An experimental 1957 seismic survey at Haddon Downs recorded two key refractors at 10,250 ft/sec (2,700 ft depth) and 17,000 ft/sec (7,250 ft depth), mapping subsurface structure in the Eromanga Sub-basin. The work revealed a sedimentary section potentially 16,000 feet thick and correlated minor subsurface dips with surface anticlines. This foundational data was collected by Santos Ltd. under an oil prospecting license using large geophone arrays and pattern shots.

Use Cases

• Mapping subsurface geological structure based on recorded seismic velocities and reflector depths.
• Correlating surface anticlines with interpreted minor subsurface dips of less than 1 degree.
• Estimating the thickness of Mesozoic and Palaeozoic sedimentary sections for basin modeling.
• Analyzing the potential for marine Cretaceous and dense limestone facies from velocity data.

Strengths

• Provides specific, measured seismic velocities (10,250 and 17,000 ft/sec) and depths for key refractors.
• Describes a detailed geological context, including basin location (Eromanga Sub-basin) and estimated section thicknesses up to 16,000 feet.
• Documents the experimental methodology, including the use of large geophone arrays and pattern shots.

Limitations

• Core metadata is incomplete: column names, row counts, file size, license, and author are not provided.
• The dataset's exact content and structure are unclear, as descriptions focus on the survey report rather than the data files.
• Update dates conflict between sources (2026-04-30 vs 2026-04-20), suggesting potential metadata inconsistency.

Provenance

Source

Geoscience Australia Data (organization implied from platform). Survey conducted by Santos Ltd.

Collection Method

Experimental seismic survey using refraction and reflection techniques with geophone arrays and pattern shots.

Time Range

October-November 1957

Freshness

2026-04-30 14:07:58.896398

Geography

Haddon Downs, South Australia, within the Eromanga Sub-basin of the Great Artesian Basin