Late Palaeozoic glaciation in Western Australia is documented by grooved surfaces in Grant Group rocks. The orientation of grooves and sedimentary structures indicate ice motion from the south-southeast, while pebble composition suggests the ice sheet originated in the Pilbara Block and extended 400 km into the Canning Basin. This dataset, provided by the Australian Ocean Data Network, confirms the existence of large continental ice sheets during that period.
Use Cases
- Reconstructing Late Palaeozoic ice sheet extent based on documented groove surfaces.
- Analyzing ice flow direction based on groove orientation and sedimentary structures.
- Investigating sediment provenance and ice sheet origin based on banded iron formation pebbles.
- Modeling grounding line geometry and marine embayment environments based on facies geometry.
- Confirming the existence of continental ice sheets in Western Australia during the Late Palaeozoic glaciation.
Strengths
- Provides a specific ice sheet extent measurement of 400 km.
- Identifies a precise ice motion direction from the south-southeast.
- Links geological features (grooves, pebbles) to a specific glacial event and geographic origin (Pilbara Block).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data formats are PDF and HTML, which may require extraction for quantitative analysis.
Provenance
- Source
- Australian Ocean Data Network
- Time Range
- Late Palaeozoic
- Freshness
- Last updated 2026-05-05 00:41:43.315622; freshness should be verified.
- Geography
- Grant Group, Grant Range, Fitzroy Trough, Canning Basin, Pilbara Block, Western Australia