ZHENG Yi, LI Dengfeng, ZHANG Li, et al. Biotite 40Ar/39Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2014,53(6):10-18.
ZHENG Yi, LI Dengfeng, ZHANG Li, et al. Biotite 40Ar/39Ar Geochronology Constraint on the Genesis of the Sarekuobu Gold Deposit, Xinjiang[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2014,53(6):10-18.DOI:
The genesis of polymetallic deposits in southern Altay
NW China has been disputed between a syngenetic seafloor hydrothermal process and an epigenetic orogenic-type mineralization. The Sarekuobu gold deposit occurs as NW-trending veins in the Devonian Kelan volcanicsedimentary basin of the Altay orogenic belt. To constrain the metallogenic age
biotite
40
Ar/
39
Ar geochronological analysis was carried out in this paper. One biotite sample separated from the gold-bearing lodes yielded
40
Ar/
39
Ar isotopic plateau age of (213.5 ± 2.3) Ma
representing the mineralization age of gold-polymetallic sulfides. By summarizing the available isotopic ages and geochemistry data
a significant collision event and related metallogeny during the Triassic in the Altay Orogen is recognized. In combination with the characteristics of ore geology and fluid inclusion geochemistry
the Sarekuobu gold deposit can be determined as an epigenetic orogenictype gold deposit.