U-Pb-Hf Zircon Data from Wilkes and Queen Mary Lands

U-Pb-Hf zircon data from Wilkes and Queen Mary lands is an unpublished dataset from the Australian Antarctic Data Centre. The data was collected using SHRIMP U-Pb analysis and LAM-ICPMS Lu-Hf analysis at the John de Laeter Centre, Curtin University, with methods detailed in Daczko et al. (2018) and Halpin et al. (2020). The dataset was last updated in October 2015.

Use Cases

• Determining the crystallization age of zircon grains based on U-Pb isotope ratios.
• Investigating crustal evolution and magma sources using Lu-Hf isotope signatures.
• Correlating geological units in Antarctica through comparative geochronology.
• Calibrating and validating isotopic analysis methods against reference materials like BR266 and OGC-1.

Strengths

• Analytical methods are explicitly detailed, referencing published procedures from Daczko et al. (2018) and Halpin et al. (2020).
• Data processing used established tools SQUID 2.50 and Isoplot 3.76.
• Analysis was performed at a specialized facility, the John de Laeter Centre, using a SHRIMP II ion microprobe and a Nu Plasma MC-ICPMS.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Last updated 2015-10-31 23:59:59.999000; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC)

Collection Method

U-Pb analysis via SHRIMP II and Lu-Hf analysis via LAM-ICPMS on hand-picked zircon grains.

Time Range

null

Freshness

Last updated 2015-10-31 23:59:59.999000

Geography

Wilkes and Queen Mary lands, Antarctica