Late Palaeozoic Glacial Grooves and Ice Sheet Extent in Western Australia

Geospatial data from Geoscience Australia documents grooved surfaces cut by glacial ice in the Grant Group rocks of the Grant Range. The orientation of grooves and sedimentary structures indicate ice motion from the south-southeast, suggesting ice sheets extended 400 km from the Pilbara Block into the Canning Basin. These features confirm the existence of large continental ice sheets in Western Australia during the Late Palaeozoic glaciation.

Use Cases

• Reconstructing paleo-ice flow directions based on groove orientations mentioned in the description.
• Modeling the extent of Late Palaeozoic ice sheets based on the reported 400 km extension from the Pilbara Block.
• Analyzing sedimentary facies geometry to infer past ice shelf grounding line positions in marine embayments.
• Correlating glacial features with specific lithologies, such as banded iron formation pebbles in diamictites.

Strengths

• Data provides direct evidence for the existence of large continental ice sheets in Western Australia during a specific geological period.
• Includes a specific inferred ice sheet extension distance of 400 km.
• Originates from Geoscience Australia, a national geological survey organization.

Limitations

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

Provenance

Source

Geoscience Australia Data

Collection Method

Field geological observation and analysis of rock surfaces and sedimentary structures.

Time Range

Late Palaeozoic era

Freshness

Last updated 2026-04-30 13:02:24.645234; freshness should be verified.

Geography

Grant Range, Grant Group, Canning Basin, Fitzroy Trough, and Pilbara Block in Western Australia