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

The Carrara Sub-basin in the South Nicholson region of Australia is the source of strontium, carbon, and oxygen isotope data from carbonate samples in the NDI Carrara 1 drill hole. Geoscience Australia collected this data in 2020 from a 1751-meter drill hole intersecting Paleozoic and Proterozoic rocks. The data was presented at the 2023 Australian Earth Science Convention to improve understanding of paleo-depositional environments and chemostratigraphy.

Use Cases

• Correlating local stratigraphy with global Cambrian seawater chemistry based on strontium isotope ratios.
• Identifying mid-Cambrian positive carbon isotope excursions within the Georgina Basin samples.
• Investigating basin restriction and diagenetic overprinting in the Proterozoic Lawn Hill Formation using radiogenic strontium values.
• Assessing hydrocarbon resource potential in the Carrara Sub-basin based on the described geological intersections.

Strengths

• Data originates from the first drillhole to intersect Proterozoic rocks of the recently discovered Carrara Sub-basin.
• Drill hole provides a continuous 1751-meter stratigraphic record intersecting ~625 m of Paleozoic and ~1120 m of Proterozoic rocks.
• Isotope data is described as high-resolution for strontium, carbon, and oxygen.

Limitations

• 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 is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

Samples from a 1751 m stratigraphic drill hole completed in 2020, followed by a comprehensive analytical program.

Time Range

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

Freshness

Last updated 2026-05-26 19:13:53.840426; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Australia.