Buddycurrawa Volcanics: Late Paleoproterozoic Geochronology and Hydrothermal Data

Geoscience Australia data describes the Buddycurrawa Volcanics, a sequence of trachyte lavas and shallow-marine siliciclastic rocks in the South Nicholson region, Northern Territory. New geochronology establishes an extrusion age constrained between approximately 1662 and 1631 million years ago. The dataset also documents potassic alteration and siliceous pipes indicative of a regional hydrothermal system.

Use Cases

• Correlating regional stratigraphy based on reported U-Pb and Rb-Sr geochronology ages.
• Assessing base metal mineral potential based on described 'white smoker' hydrothermal pipes.
• Studying Paleoproterozoic volcanic rock alteration using data on pervasive potassic alteration and associated fluid flow ages.

Strengths

• Geochronology provides specific maximum (ca. 1662 Ma) and minimum (ca. 1631 Ma) age constraints.
• Data links volcanic units to regional hydrothermal systems and base metal mineral potential.
• Includes multiple dating methods (SHRIMP U-Pb zircon, in situ laser Rb-Sr).

Limitations

• Row count and column-level documentation are unknown, which may limit suitability assessment.
• Data is provided as a PDF, which may require extraction and structuring for analysis.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Geoscience Australia Data

Collection Method

Field mapping and laboratory geochronological analysis (SHRIMP U-Pb, laser Rb-Sr).

Time Range

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

Freshness

Last updated 2026-04-20 02:15:38.526536; freshness should be verified.

Geography

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