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

NDI Carrara 1 is a 1751-meter stratigraphic drill hole completed in 2020, intersecting the Paleozoic Georgina Basin and Proterozoic Lawn Hill Formation in the Carrara Sub-basin. This dataset provides high-resolution strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) isotope measurements from carbonate samples to analyze paleo-depositional environments and chemostratigraphy. The data suggest connections to mid-Cambrian seawater but are flagged for significant sample alteration.

Use Cases

• Correlating local stratigraphy with global Cambrian marine isotope excursions based on δ13C and δ18O trends.
• Assessing paleo-depositional environment connectivity using 87Sr/86Sr ratios compared to seawater values.
• Evaluating hydrocarbon potential in the Carrara Sub-basin by analyzing isotopic data from sections with recorded shows.
• Refining chemostratigraphic models for the Proterozoic Lawn Hill Formation and Paleozoic Georgina Basin.

Strengths

• Provides the first isotopic data from the newly discovered Carrara Sub-basin, intersecting ~1120 m of Proterozoic rock.
• Data is high-resolution and targets specific geological formations (Georgina Basin, Lawn Hill Formation).
• Results are linked to a major collaborative campaign (MinEx CRC National Drilling Initiative) involving Geoscience Australia.

Limitations

• Metadata for row count, file size, license, and author is consistently missing or listed as 'None' across all platform entries.
• The description explicitly warns that the majority of samples show significant alteration, limiting their use for assessing primary depositional conditions.
• Column names are unknown, hindering precise understanding of the data structure.

Provenance

Source

Geoscience Australia, MinEx CRC, Northern Territory Geological Survey

Collection Method

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

Time Range

Mid-Cambrian (Paleozoic) to Proterozoic eras, as indicated by the geological formations.

Freshness

Last updated 2026-06 04 06:58:25.272653 on data.gov.au

Geography

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