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

Geoscience Australia presents strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) isotope data from carbonate samples in the NDI Carrara 1 drill hole. The 1751-meter hole, completed in 2020, intersected Paleozoic and Proterozoic rocks in the Carrara Sub-basin. The data aims to improve understanding of paleo-depositional environments and chemostratigraphy.

Use Cases

• Reconstructing paleo-depositional environments based on strontium, carbon, and oxygen isotope ratios.
• Correlating local stratigraphy with global marine chemostratigraphy trends mentioned in the description.
• Assessing basin restriction and terrigenous influx using radiogenic strontium isotope values.
• Identifying diagenetic alteration in carbonate rocks through paired carbon and oxygen isotope analysis.

Strengths

• Data is from a 1751-meter stratigraphic drill hole, providing a deep geological section.
• High-resolution isotopic measurements for three distinct elements (Sr, C, O).
• Samples cover two major geological units: the Paleozoic Georgina Basin and the Proterozoic Lawn Hill Formation.
• Analysis was conducted by Geoscience Australia, a national geological survey.

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 were collected from the NDI Carrara 1 drill hole, with isotopic analysis carried out as part of a comprehensive analytical program.

Time Range

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

Freshness

Last updated 2026-04-30 14:09:49.228642; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Northern Territory, Australia.