Geology of the Stillwell Hills: Rock Formations Spanning Over 2500 Million Years

Over 2500 million years of geological history are recorded in the granulite facies gneisses of the Stillwell Hills region. This dataset from Geoscience Australia describes the complex assemblage of Archaean to Meso-Neoproterozoic orthogneisses, paragneisses, and intrusive rocks. It was last updated on 2026-05-14.

Use Cases

• Map the distribution of Archaean craton margins based on the described Stillwell Orthogneiss.
• Study late Proterozoic crustal reworking events based on evidence for multiple deformation periods.
• Analyze the composition and emplacement of younger crustal additions like the Scoresby Charnockite and Kemp Dykes.
• Model the intercalation and folding of supracrustal rock sequences with older basement gneisses.

Strengths

• Covers a geological timescale exceeding 2500 million years.
• Describes a detailed lithological sequence including specific named rock units like Stillwell Orthogneiss and Dovers Paragneiss.
• Sourced from the authoritative national geological survey Geoscience Australia.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing on a specific Antarctic region.

Provenance

Source

Geoscience Australia Data

Time Range

Archaean to Meso-Neoproterozoic (spanning over 2500 million years)

Freshness

Last updated 2026-05-14 04:32:01.724545; freshness should be verified.

Geography

Stillwell Hills region, Antarctic, near Enderby Land