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 rocks in the Carrara Sub-basin. Geoscience Australia conducted the analytical program to understand paleo-depositional environments and chemostratigraphy.

Use Cases

• Reconstructing paleo-depositional environments based on strontium, carbon, and oxygen isotope ratios.
• Correlating local stratigraphy with global chemostratigraphy trends mentioned in the description.
• Assessing basin connectivity to ancient oceans using 87Sr/86Sr ratios compared to expected seawater values.
• Identifying diagenetic alteration events from isotopic signatures as described for the Proterozoic samples.

Strengths

• Data originates from a 1751-meter deep stratigraphic drill hole, providing a continuous geological record.
• High-resolution isotope measurements for three distinct systems (Sr, C, O) are described.
• Analysis was conducted by Geoscience Australia, a national geological survey, suggesting institutional credibility.

Limitations

• The majority of samples show significant alteration, limiting their use for assessing 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, MinEx CRC, and the Northern Territory Geological Survey.

Collection Method

Samples were collected from the NDI Carrara 1 drill hole and analyzed in a comprehensive laboratory program.

Time Range

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

Freshness

Last updated 2026-06-23 00:53:12.502454; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Australia.