Single Grain Zircon (U-Th)/He Ages for Combustion Metamorphic Rocks, Junggar Basin

Middle Pleistocene zircon (U-Th)/He ages, with a weighted mean of 0.63 ± 0.19 Ma, constrain the timing of coal seam combustion and combustion metamorphic rock formation in the Junggar Basin. The dataset, created by Bin Chen and last updated in May 2026, includes three tightly clustered ages and two older single-grain ages interpreted as pre-combustion components. It is a small dataset (5.5 KB) stored in an XLS file format.

Use Cases

• Constraining the timing of near-surface tectonic uplift based on combustion metamorphic rock ages.
• Reconstructing late Cenozoic tectonic evolution in intracontinental orogenic belts using zircon (U-Th)/He thermochronology.
• Correlating combustion events with regional exhumation patterns based on spatial distribution data.
• Analyzing the resetting or inheritance of thermochronologic signals in combustion-altered zircon grains.

Strengths

• Provides a specific weighted mean age of 0.63 ± 0.19 Ma for the principal combustion event.
• Includes three tightly clustered Middle Pleistocene ages and two older single-grain ages (8.7 Ma and 87.7 Ma) for analysis.
• Dataset is openly available under a CC-BY-4.0 license.

Limitations

• Row count is unknown, which may limit suitability assessment for statistical analysis.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset is very small (5.5 KB), indicating a limited scope of data points.

Provenance

Source

figshare, author Bin Chen.

Collection Method

Data likely generated through zircon (U-Th)/He dating applied to combustion metamorphic rocks, with supporting field investigations, thin-section observation, and X-ray diffraction.

Time Range

Principal event dated to the Middle Pleistocene (~0.63 Ma); includes older Miocene and Cretaceous grain ages.

Freshness

Last updated 2026-05-05 17:34:27; freshness should be verified.

Geography

Focus on the peripheral orogenic belts around the Junggar Basin, associated with the India–Asia collision.