Glacial Groove Surfaces in Western Australia Indicating Late Palaeozoic Ice Sheets

Grooved surfaces in Grant Group rocks provide evidence for Late Palaeozoic ice sheets in Western Australia. The orientation of grooves and sedimentary structures indicate ice motion from the south-southeast, while pebbles suggest the ice originated in the Pilbara Block and extended 400 km into the Canning Basin. Geoscience Australia Data published this geological study, last updated in March 2026.

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 grounding line positions of ancient ice shelves
• Correlating glacial features with regional geology to confirm the existence of large continental ice sheets

Strengths

• Provides specific evidence for ice sheet extent, including a 400 km distance from the Pilbara Block
• Includes directional data on ice motion from groove orientations and sedimentary structures
• Published by the authoritative source Geoscience Australia Data

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 region of Western Australia

Provenance

Source

Geoscience Australia Data

Collection Method

Geological field study and analysis of grooved surfaces and sedimentary structures.

Time Range

Late Palaeozoic

Freshness

Last updated 2026-03 25 16:21:16.372696; freshness should be verified

Geography

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