Strontium, Carbon, Oxygen Isotope Data from NDI Carrara 1 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 stratigraphic drill hole intersected the Paleozoic Georgina Basin and Proterozoic Lawn Hill Formation in the Carrara Sub-basin. The data was acquired to understand paleo-depositional environments and chemostratigraphy trends.

Use Cases

• Correlating local isotopic signatures with global marine excursions based on reported δ13C and δ18O data.
• Investigating basin restriction and terrigenous influx based on radiogenic 87Sr/86Sr values in Proterozoic samples.
• Assessing diagenetic alteration and its impact on primary geochemical signals based on the described sample alteration.
• Modeling paleo-depositional environments of the Carrara Sub-basin using high-resolution isotope profiles.

Strengths

• Data is from the first drillhole to intersect Proterozoic rocks of the recently discovered Carrara Sub-basin.
• High-resolution isotopic measurements for three distinct elements (Sr, C, O) are provided.
• The drill hole provides a continuous stratigraphic record intersecting approximately 625 m of Paleozoic and 1120 m of Proterozoic rocks.

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 Data

Collection Method

Analytical program on carbonate-bearing samples from the NDI Carrara 1 stratigraphic drill hole.

Time Range

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

Freshness

Last updated 2026-05-14 03:29:08.097408; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Australia.