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Geoscience ›› 2011, Vol. 25 ›› Issue (2): 201-210.

• Water Resource and Environment • Previous Articles     Next Articles

Characteristics and Geochronology of the W, Mo-bearing Granodiorite  Porphyry in Dongyuan, Southern Anhui

周翔1,余心起1,王德恩 2,张德会 1,春麟 1,傅建真 2,董会明 2   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China;
    2. 332 Geological Team of Anhui Bureau of Geology and Mineral Resources, Huangshan, Anhui245000, China
  • Online:2011-04-25 Published:2011-05-13

Abstract:

Based on the field investigation, profiling and geochemical testing in detail, the systematic studies have been performed on geochronology of the Dongyuan W, Mo-bearing granodiorite porphyry in southern Anhui.The Sensitive High Resolution Ion Micro Probe (SHRIMP) U-Pb zircon dating yields a concordant age of (146 ±1) Ma for granodiorite, suggesting that the intrusive body was formed during the Late Jurassic.While the Re-Os dating result of 146 Ma shows that the molybdenite from the body was formed in the Late Jurassic, the same stage when the intrusive body formed.The content of Re from the molybdenite (22.02×10-6 - 98.09×10-6) shows that the ore-forming materials are derived from the crust-mantle mixed source.

Key words: granodiorite porphyry, SHRIMP U-Pb zircon dating, Re-Os dating, Dongyuan, southern Anhui

CLC Number: