Early Permian Rhyolite Geochemistry and Zircon Hf Isotopic Maps

296 to 299 million-year-old Bole rhyolite samples from the Alataw Mountains provide data on high-K calc-alkaline aluminous A2-type affinities, zircon εHf(t) values from +3.2 to +15.2, and Mg# values of 21–38. Author Bo Liu published this research dataset in 2026 to clarify the post-accretionary tectonic setting and crustal growth processes in the Western Tianshan Orogen.

Use Cases

• Classify tectonic setting using high-K calc-alkaline aluminous A2-type affinity data from rhyolite samples.
• Model crustal source composition by analyzing zircon εHf(t) values ranging from +3.2 to +15.2.
• Correlate magmatic events across terranes using regional-scale zircon Hf isotopic mapping data.
• Infer mantle contribution to crustal growth through low Mg# values (21–38) in the rhyolites.

Strengths

• Zircon εHf(t) values provided with a precise range from +3.2 to +15.2.
• Geochemical data includes specific Mg# values ranging from 21 to 38.
• Samples are temporally constrained to a narrow Early Permian window of 296 to 299 Ma.

Limitations

• Sample size and row count are unknown, limiting statistical power.
• Data is geographically focused on the Bole area and Alataw Mountains, not globally representative.
• The 91.4 MB size indicates a small-scale dataset, likely containing detailed analyses for a specific case study rather than broad coverage.

Provenance

Source

Author Bo Liu, published via figshare.

Collection Method

Geochemical and isotopic analysis of Early Permian Bole rhyolite samples.

Time Range

Early Permian, specifically 296 to 299 Ma.

Freshness

Last updated in April 2026.

Geography

Alataw Mountains in the Western Tianshan Orogen, Central Asian Orogenic Belt.