1751 meters of stratigraphic drill core from the NDI Carrara 1 hole completed in 2020. The dataset presents high-resolution strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) isotope data from carbonate samples of the Paleozoic Georgina Basin and Proterozoic Lawn Hill Formation. This data was acquired by Geoscience Australia to understand paleo-depositional environments and chemostratigraphy trends in the Carrara Sub-basin.
Use Cases
- Reconstructing paleo-depositional environments based on strontium, carbon, and oxygen isotope ratios.
- Correlating local stratigraphy with global marine isotope excursions mentioned in the description.
- Assessing basin restriction and terrigenous influx using radiogenic strontium isotope values.
- Evaluating the resource potential of the Carrara Sub-basin through geochemical analysis of hydrocarbon-bearing sections.
Strengths
- Data originates from a 1751-meter-deep stratigraphic drill hole, providing a continuous subsurface record.
- High-resolution isotope measurements for three distinct elements (Sr, C, O) are presented.
- The drill hole intersected both Paleozoic (~625 m) and Proterozoic (~1120 m) geological sections.
- Analysis was conducted by Geoscience Australia, a national geoscience organization.
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 and sample size are unknown, which may limit suitability assessment.
Provenance
- Source
- Geoscience Australia, MinEx CRC, and the Northern Territory Geological Survey via the Australian Ocean Data Network.
- Collection Method
- Isotope analysis of carbonate-bearing samples from the NDI Carrara 1 stratigraphic drill hole.
- Time Range
- Samples cover Proterozoic (~1600 Ma) and mid-Cambrian (Paleozoic) periods.
- Freshness
- Last updated 2026-06-27 18:12:56.106772; freshness should be verified.
- Geography
- Carrara Sub-basin, South Nicholson region, Australia.