Amphibolite Geochemistry and Geochronology from the Nantinghe Ophiolites, SW China

466–456 Ma zircon U-Pb ages and whole-rock geochemical data for amphibolites from the Nantinghe area in the Changning–Menglian suture zone, southwestern Yunnan Province, China. The dataset, authored by Yanlong Zhang and last updated in April 2026, includes geochemical affinities and metamorphic ages (445–436 Ma) used to constrain the closure of the Proto-Tethys Ocean.

Use Cases

• Modeling Early Palaeozoic subduction initiation based on arc-related magmatism signatures
• Dating continental collision events based on metamorphic zircon rim ages
• Correlating tectonic evolution across suture zones using geochemical and geochronological data
• Reconstructing Proto-Tethys Ocean closure timing based on protolith and metamorphic age pairs

Strengths

• Includes specific zircon U-Pb ages for protolith (466–456 Ma) and metamorphism (445–436 Ma)
• Provides whole-rock geochemical data including SiO2, Al2O3, MgO, TFe2O3, and rare earth element contents
• Data is openly licensed under CC-BY-4.0

Limitations

• Row count is unknown, which may limit suitability assessment
• Column-level documentation is absent; field semantics must be inferred after download
• Dataset size is 767.9 KB, indicating a limited scope

Provenance

Source

figshare

Collection Method

Zircon U-Pb dating and whole-rock geochemical analysis of amphibolite samples.

Time Range

Early Palaeozoic (Ordovician to Silurian, ~480–436 Ma)

Freshness

Last updated 2026-04-11 13:20:05; freshness should be verified

Geography

Nantinghe area, Changning–Menglian suture zone, southwestern Yunnan Province, China