Australian Ocean Data Network provides data on ice drainage changes in Prydz Bay, East Antarctica, during the late Neogene. The dataset describes flow pattern changes of the Lambert Glacier-Amery Ice Shelf system, including the deposition of a trough mouth fan and compositional shifts around 1.1 million years ago. Age control is derived from an Ocean Drilling Program hole, indicating most fan deposition predates the Brunhes-Matuyama Boundary (780,000 years BP).
Use Cases
- Modeling past ice sheet dynamics based on described changes in flow patterns and erosion depth.
- Analyzing sediment provenance shifts based on the described compositional change from Lambert Graben to basement-derived material around 1.1 Ma BP.
- Correlating extreme ice advance events with climatic cycles based on the stratigraphy indicating rare advances after the mid Pleistocene.
- Investigating the relationship between ice discharge sources (Lambert Glacier vs. Princess Elizabeth Land) over time as described for shelf grounding episodes.
Strengths
- Specific temporal markers are provided, such as the compositional shift at ~1.1 Ma BP and the Brunhes-Matuyama Boundary (780 ka BP).
- Data provenance is linked to the Ocean Drilling Program, a recognized scientific initiative.
- The description provides a detailed geological interpretation of ice sheet evolution and climate interaction.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- The primary file format is HTML, which may not be a standard data format for analysis.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Likely contains geological and stratigraphic data from Ocean Drilling Program cores and analysis.
- Time Range
- Late Neogene, with specific events in the Early Pliocene and around 1.1 million years ago.
- Freshness
- Last updated 2026-04-16 08:29:43.228418; freshness should be verified.
- Geography
- Prydz Bay and the Lambert Glacier-Amery Ice Shelf system, East Antarctica.