Lander Trough Geological Survey Report

A 300 km long and 100 km wide crustal downwarp, the Lander Trough contains up to 800 meters of Cambrian and Ordovician sediments. This report details its structure, rock sequences, and petroleum potential based on recent geological mapping and geophysical data reassessment. The Australian Ocean Data Network published the findings, last updated in April 2026.

Use Cases

• Assess petroleum potential by analyzing the thickness (up to 800 m) and marine nature of the Cambrian-Ordovician sediment sequence.
• Model basin structure using dimensions (300 km long, 100 km wide) and fault system data bounding the Arunta Block.
• Correlate stratigraphy by comparing the three rock sequences (Proterozoic basement, Cambrian/Ordovician wedge, Late Palaeozoic sandstone) with adjacent basins.
• Study tectonic history through the post-Devonian Alice Springs Orogeny fault system contemporaneous with the trough formation.

Strengths

• Report integrates multiple data sources: recent geological mapping, shallow stratigraphic drilling, and geophysical data reassessment.
• Provides specific dimensional metrics for the trough (300 km long, 100 km wide) and sediment thicknesses (100-250 m, up to 800 m).

Limitations

• Primary data format is a descriptive PDF/HTML report, not a structured, machine-readable dataset.
• No sample data or column definitions are provided for quantitative analysis.
• Geographic focus is limited to the southeastern part of the Lander Trough.

Provenance

Source

Australian Ocean Data Network

Collection Method

Geological mapping, shallow stratigraphic drilling, and reassessment of geophysical data.

Time Range

Focuses on geological timeframes from Proterozoic to Late Palaeozoic.

Freshness

Report was last updated in April 2026.

Geography

Lander Trough, southern Wiso Basin, Northern Territory, Australia.