Buddycurrawa Volcanics: Late Paleoproterozoic Geochronology and Hydrothermal Data

The Buddycurrawa Volcanics dataset from Geoscience Australia provides geochronology and geological data for a sequence of trachyte lavas and siliciclastic rocks in the South Nicholson region, Northern Territory. It establishes extrusion ages between approximately 1662 and 1631 Ma and documents evidence of hydrothermal systems. The data was published in 2020 as part of the Exploring for the Future initiative.

Use Cases

• Correlating regional stratigraphy based on established late Paleoproterozoic age constraints.
• Modeling shallow-marine hydrothermal systems based on descriptions of 'white smoker' siliceous pipes.
• Investigating regional fluid flow and alteration events based on reported potassic alteration ages from 1612 to 1323 Ma.

Strengths

• Provides precise maximum (ca. 1662 Ma) and minimum (ca. 1631 Ma) extrusion ages from SHRIMP U-Pb zircon and laser Rb-Sr dating.
• Links the volcanics to regional, highly prospective late Paleoproterozoic successions and documented episodes of fluid flow.
• Identifies specific geological features like vertical siliceous pipes ('white smokers') suggestive of base metal mineral systems.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia, Australian Ocean Data Network

Collection Method

Field geology, SHRIMP U-Pb zircon dating, in situ laser Rb-Sr dating.

Time Range

Late Paleoproterozoic (approximately 1662 to 1631 Ma for extrusion, with alteration events from 1612 to 1323 Ma).

Freshness

Last updated 2026-04-28 15:13:07.704351; freshness should be verified.

Geography

Benmara region, northwestern Mount Drummond 1:250 000 map sheet, Northern Territory, Australia.