NDI Carrara 1: Strontium, Carbon, and Oxygen Isotope Data from a Stratigraphic Drill Hole

Strontium, carbon, and oxygen isotope data from carbonate samples collected from the NDI Carrara 1 stratigraphic drill hole. The 1751-meter drill hole, completed in 2020, intersected Paleozoic and Proterozoic rock sequences in the Carrara Sub-basin. Data was generated by Geoscience Australia as part of the MinEx CRC National Drilling Initiative to understand paleo-depositional environments and chemostratigraphy.

Use Cases

• Analyzing paleo-depositional environments based on strontium, carbon, and oxygen isotope ratios.
• Investigating local and global chemostratigraphy trends within the Georgina Basin and Lawn Hill Formation.
• Assessing basin connectivity to the global ocean during the Cambrian period based on 87Sr/86Sr ratios.
• Identifying diagenetic alteration in carbonate rocks based on isotopic data patterns.

Strengths

• Data is from a 1751-meter stratigraphic drill hole, providing a continuous subsurface record.
• High-resolution isotopic measurements (87Sr/86Sr, δ13C, δ18O) are provided for carbonate samples.
• Analysis includes samples from both the Paleozoic Georgina Basin (~625 m) and Proterozoic Lawn Hill Formation.

Limitations

• The description notes that the majority of samples show significant alteration, limiting assessment of primary depositional conditions.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and sample size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Isotopic analysis of carbonate-bearing samples from a stratigraphic drill hole.

Time Range

Samples span Proterozoic (~1600 Ma) and Paleozoic (mid-Cambrian) periods.

Freshness

Last updated 2026-04-20 00:54:05.008912; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Australia.