Late Neogene to mid Pleistocene sediment records from Prydz Bay, Antarctica, document the history of the Lambert Glacier-Amery Ice Shelf system. The dataset, provided by the Australian Ocean Data Network, describes a trough mouth fan built by debris flows from an ice stream reaching the continental shelf edge. Age control from ODP Site 1167 indicates the bulk of fan deposition occurred prior to 780,000 years ago.
Use Cases
- Reconstructing past ice sheet extents based on described subglacial till and debris flow deposits.
- Modeling ice-ocean interactions using the described grounding line and shelf edge processes.
- Analyzing the timing of extreme glacial advances from the stratigraphy of debris flow intervals and mudstone horizons.
- Investigating mid-Pleistocene climate change impacts on ice volume from the described cessation of extreme advances.
Strengths
- Provides age control tied to the Brunhes-Matuyama Boundary (780 ka).
- Describes a specific geological feature (Prydz Channel trough mouth fan) with a clear depositional model.
- Links stratigraphy to changes in ice dynamics, offering a cause-and-effect narrative.
Limitations
- Description metadata is limited; actual data quality requires manual inspection after download.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Likely contains geological core sample analysis from Ocean Drilling Program (ODP) Site 1167.
- Time Range
- Late Neogene to mid Pleistocene, with key events prior to 780,000 years ago.
- Freshness
- Last updated 2026-06-04 06:54:27.329070; freshness should be verified.
- Geography
- Prydz Bay, Antarctica, focusing on the Lambert Glacier-Amery Ice Shelf drainage system.