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Provenance heterogeneity of uranium-bearing strata and its implications for uranium mineralization along the northern margin of Ordos Basin
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DOI：10.1016/j.oregeorev.2026.107377.png)
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Abstract
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• Provenance shifted from a dominant northern source (Daqingshan-Wulashan) in the Middle Jurassic to multi-sourced northwestern inputs by the Early Cretaceous, fundamentally altering sediment composition. • Early Cretaceous paleocurrents opposed ore-fluid migration pathways, inhibiting mineralization and explaining the west-east transition of uranium hosts from Cretaceous to Jurassic strata. • Zircon Lu-Hf isotopes record deep crustal processes (NCC destruction, ancient crust recycling, juvenile magmatism) that preconditioned the basin for uranium enrichment.
Keywords:
Ordos Basin
Saitai area
Mesozoic strata
Detrital zircon
U-Pb-Hf
Provenance
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