A review of the geological characteristics and geodynamic setting of Late Paleozoic porphyry copper deposits in the Junggar region, Xinjiang Uygur Autonomous Region, Northwest China

Geochronology and Geochemistry of Igneous Rocks from the Laoshankou District, North Xinjiang: Implications for the Late Paleozoic Tectonic Evolution and Metallogenesis of East Junggar

“…The combined results suggest a voluminous early Late Paleozoic magmatic event (390-370 Ma) in the northern margin of East Junggar Xue et al, 2010). Yang et al (2012a) proposed that the Late Devonian Kalaxianger porphyry Cu metallogenic belt formed in an oceanic island arc at the northern margin of East Junggar between 378 to 374 Ma, coeval with the Late Paleozoic magmatic event. Geochronological data for the deposits includes a Re-Os isochron age of 376.9 ± 2.2 Ma for molybdenite in the Halasu porphyry copper ore district and Re-Os ages of 378.3 ± 5.6 Ma and 373.9 ± 2.2 Ma for molybdenite in the Halasu and Yulekenhalasu porphyry copper deposits, respectively (Yang et al, 2012b).…”

Mid-Late Paleozoic metallogenesis and evolution of the Chinese Altai and East Junggar Orogenic Belt, NW China, Central Asia

“…Zhao ZF et al (2009) dated the Yulekenhalasu porphyritic granite by a LA-ICP-MS zircon U-Pb method at 381.6 ± 2.5 Ma, for which Yang FQ et al (2012) have obtained a molybdenite Re-Os isochron age of 373.9 ± 2.2 Ma (Tab. 3).…”

“…A better understanding of metallogenesis of these mineral deposits and their relationships with the tectonic evolution of the Chinese Altai-East Junggar collage is now possible because of several detailed studies that have been carried out in the past two decades (Wang DH et al 2002;Wang DH 2003;Yang FQ et al 2012, 2013. However, there have not been extensive reviews in the English language relating the tectonic evolution of the Chinese Altai-East Junggar collage to the distribution of different types of metal deposits.…”

Magmatic sequences in the Halasu Cu Belt, NW China: Trigger for the Paleozoic porphyry Cu mineralization in the Chinese Altay–East Junggar

“…Dong and Li, 2006;Zhao et al, 2009a;Wan et al, 2014). In the CAEJ, the Halasu porphyry copper belt (or Kalaxiange'er porphyry copper belt), including the Yulekenhalasu, Halasu I, II and III orebodies from north to south, was the first porphyry copper district recognized since exploration commenced in the 1960s (Liu et al, 1991;Yan et al, 2006;Yang et al, 2012b). The mineralization in Halasu belt is closely associated with the Late Devonian porphyries (Xiang et al, 2009;Zhao et al, 2009b;Yang et al, 2012c); however, many coeval intrusions in Halasu are geochemically similar to the ore-bearing ones but lack copper mineralization.…”