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

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

Use Cases

• Correlating local isotopic trends with global marine excursions based on reported δ13C and δ18O shifts.
• Investigating basin restriction and terrigenous influx based on radiogenic 87Sr/86Sr values in Proterozoic samples.
• Assessing diagenetic alteration and its impact on primary isotopic signatures for depositional condition studies.
• Modeling paleo-depositional environments of the Georgina Basin and Lawn Hill Formation using high-resolution isotope data.

Strengths

• Data is from a 1751-meter deep stratigraphic drill hole, providing a continuous subsurface record.
• High-resolution isotopic measurements (87Sr/86Sr, δ13C, δ18O) are presented for carbonate-bearing samples.
• Analysis was conducted by Geoscience Australia, a national geological survey, as part of a collaborative research initiative.

Limitations

• The description notes most 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 and sample size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia under the Exploring for the Future program, in collaboration with MinEx CRC and the Northern Territory Geological Survey.

Collection Method

Isotopic analysis of carbonate-bearing samples from the NDI Carrara 1 stratigraphic drill hole.

Time Range

Samples span the Paleozoic Georgina Basin and the Proterozoic Lawn Hill Formation (~1600 Ma).

Freshness

Last updated 2026-03-19 23:20:10.559713; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Australia.