Table 1_Detrital zircon geochronology and its geological implications of the Nanduan forma

Eight analyzed samples of detrital zircons from the Nanduan Formation provide U-Pb age and Lu-Hf isotope data. The age spectra show three dominant populations: Pan-African (530–680 Ma), Late Grenvillian (900–980 Ma), and Early Grenvillian (1100–1300 Ma). Author ShiChang Wang published this dataset on figshare under a CC-BY-4.0 license to provide sedimentary evidence for the closure of the Proto-Tethys Ocean.

Use Cases

• Analyzing sediment provenance based on U-Pb age spectra and Hf isotopic compositions.
• Constraining maximum depositional ages based on the presence of Carboniferous zircons.
• Investigating crustal evolution and source mixing based on εHf(t) values ranging from -49.42 to +10.23.
• Correlating regional stratigraphy using detrital zircon signatures to understand tectonic events.

Strengths

• Includes Lu-Hf isotope data (εHf(t) values) for detrital zircons, providing insights into crustal evolution.
• U-Pb age data defines three dominant age populations and subordinate peaks, offering detailed provenance constraints.
• Data from eight analyzed samples, with four containing 1%–8% Carboniferous zircons used for age dating.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is small (568.1 KB), indicating a limited scope of data.

Provenance

Source

figshare, author ShiChang Wang.

Collection Method

LA-ICP-MS analysis of detrital zircons from sedimentary rocks.

Time Range

Zircon ages range from ~350 Ma to 1700 Ma, with a focus on Paleozoic and Proterozoic populations.

Freshness

Last updated 2026-04-30 05:40:04; freshness should be verified.

Geography

Changning-Menglian tectonic belt, southwestern Yunnan.