Geochemical and Geochronological Data for Granitoids in the North Qilian Orogenic Belt

Zircon and apatite ages of 512–504 Ma record a regional magmatic pulse in the Dachadaban area. This dataset, created by Jie Sun and last updated in April 2026, contains geochemical and isotopic analyses of intermediate–felsic intrusions, including whole-rock geochemistry and Sr–Nd isotopic data. The 13.9 KB Excel file is licensed under CC-BY-4.0.

Use Cases

• Classifying granitoid types (I-type vs. A-type) based on apatite and whole-rock geochemical characteristics.
• Modeling magma source and mantle-crust interaction based on Sr–Nd isotopic ratios and TDM2 ages.
• Reconstructing paleo-tectonic settings using geochemical discrimination diagrams mentioned in the description.
• Analyzing crystallization conditions and magmatic evolution based on zircon Ti-thermometry and oxygen fugacity data.

Strengths

• Includes multiple analytical methods: zircon and apatite U–Pb geochronology, whole-rock geochemistry, and Sr–Nd isotopic analyses.
• Provides specific age constraints (512–504 Ma) and temperature ranges (692–826 °C) for the magmatic event.
• Data is explicitly linked to a specific geological area (Dachadaban, North Qilian Orogenic Belt) and tectonic model.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is very small (13.9 KB), indicating a limited scope of samples or variables.

Provenance

Source

figshare, authored by Jie Sun.

Collection Method

Zircon and apatite U–Pb geochronology, whole-rock geochemistry, and Sr–Nd isotopic analyses conducted on rock samples.

Time Range

Late Cambrian (ca. 512–503 Ma).

Freshness

Last updated 2026-04-20 05:23:24; freshness should be verified.

Geography

Dachadaban area, North Qilian Orogenic Belt.