ODP Sites 1166 & 1167: Pliocene-Pleistocene Glacial Sediments in Prydz Bay

Lithostratigraphy and down-hole logs from Ocean Drilling Program Sites 1166 and 1167 reconstruct glacial dynamics in eastern Prydz Bay, Antarctica. The data indicate repeated advances and retreats of the Lambert Glacier-Amery Ice Shelf system, with the grounding line not reaching the shelf break after 0.78 million years. Systematic fluctuations in sediment facies link the development of the Prydz trough-mouth fan to increased ice-rafted debris delivery to the Southern Ocean.

Use Cases

• Reconstructing glacial advance/retreat cycles based on interbedded glaciomarine sediments and open-marine muds.
• Analyzing the link between trough-mouth fan sedimentation and ice-rafted debris records using lithofacies and grain size data.
• Modeling the evolution of the Lambert Glacier-Amery Ice Shelf system from upper Pliocene to mid Pleistocene using down-hole logs.
• Investigating the transition from waterlaid tills to subglacial tills to understand glacial drainage system changes.

Strengths

• Data originates from specific Ocean Drilling Program sites (1166 and 1167), providing a precise geological context.
• Analysis covers a defined and significant temporal transition from the upper Pliocene to the lower Pleistocene.
• Dataset synthesizes multiple measurement types (lithostratigraphy, grain sizes, down-hole logs) for a multi-faceted reconstruction.

Limitations

• Key metadata such as row count, specific column names, file size, and license are unavailable across all sources.
• The dataset appears to be derived from a published external paper, which may limit direct access to the raw underlying data.
• Update dates are inconsistent between sources (2026-04-30 and 2026-04-20), suggesting potential metadata synchronization issues.

Provenance

Source

Geoscience Australia Data, likely associated with the Ocean Drilling Program.

Collection Method

Data gathered from lithostratigraphic analysis, grain size measurements, and down-hole logging at drill sites.

Time Range

Upper Pliocene to lower Pleistocene, with specific reference to events before and after 0.78 Ma.

Freshness

2026-04-30 12:30:03.781300

Geography

Eastern Prydz Bay and the upper continental slope, East Antarctica (ODP Sites 1166 and 1167).