Buddycurrawa Volcanics: Late Paleoproterozoic Volcanic Sequence in Northern Territory

The Buddycurrawa Volcanics dataset describes a sequence of trachyte lavas and shallow-marine siliciclastic rocks in the Benmara region, Northern Territory. Carson et al. (2020) provide new geochronology data establishing an extrusion age constrained between ca. 1662 Ma and ca. 1631 Ma. The dataset also documents evidence of hydrothermal systems and pervasive potassic alteration.

Use Cases

• Correlating regional stratigraphy based on established late Paleoproterozoic age constraints.
• Investigating shallow-marine hydrothermal systems based on descriptions of 'white smoker' siliceous pipes.
• Analyzing episodes of regional fluid flow and alteration based on reported Rb-Sr dating on secondary microcline.
• Assessing base metal mineral system potential based on the described hydrothermal features and alteration.

Strengths

• Provides precise age constraints: a maximum age of ca. 1662 Ma and a minimum age of ca. 1631 Ma.
• Describes specific geological features like vertical siliceous pipes ('white smokers') and pervasive potassic alteration.
• Includes geochronology data from two methods: SHRIMP U-Pb zircon and in situ laser Rb-Sr on glauconite.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is presented in PDF format, which may require extraction for quantitative analysis.

Provenance

Source

Carson, C.J., Kositcin, N., Farkas, J., Champion, D.C., Whelan, J., Redaa, A., Gilbert. S., Henson, P.A., Maas, R., Williams, B. and Doublier, M.P., 2020.

Collection Method

Geological survey and geochronological analysis (SHRIMP U-Pb zircon, laser Rb-Sr dating).

Time Range

Late Paleoproterozoic, specifically ca. 1662–1631 Ma for extrusion, with alteration events ca. 1612–1323 Ma.

Freshness

Last updated 2026-05-05 02:22:13.174808; freshness should be verified.

Geography

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