Strontium Carbon Oxygen Isotope Data From Carrara Drill Core

A 2020 stratigraphic drill hole provides isotope data from carbonate samples spanning the Paleozoic Georgina Basin and Proterozoic Lawn Hill Formation. The dataset contains high-resolution strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) isotope measurements. Data were acquired by Geoscience Australia and presented at the 2023 Australian Earth Science Convention.

Use Cases

• Correlating 87Sr/86Sr ratios from Georgina Basin samples to mid-Cambrian global seawater records.
• Identifying δ13C and δ18O excursions within drill core samples to match known mid-Cambrian marine events.
• Comparing radiogenic 87Sr/86Sr values from Proterozoic Lawn Hill Formation samples to coeval ocean baselines.
• Assessing sample alteration to filter data for primary depositional environment analysis.

Strengths

• Data sourced from a 1751-meter deep stratigraphic drill hole.
• Includes three distinct isotope systems: 87Sr/86Sr, δ13C, and δ18O.

Limitations

• The majority of samples show significant alteration, limiting primary condition assessment.
• Specific sample count, row count, and measurement precision are not provided.

Provenance

Source

Geoscience Australia, MinEx CRC, Northern Territory Geological Survey.

Collection Method

Analytical program on carbonate samples from the NDI Carrara 1 drill core.

Time Range

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

Freshness

Data presented in 2023, from a drill hole completed in 2020.

Geography

Carrara Sub-basin, South Nicholson region, Australia.