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Gold Science and Technology ›› 2014, Vol. 22 ›› Issue (5): 39-44.doi: 10.11872/j.issn.1005-2518.2014.05.039

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Characteristics of C,O Isotopes in the Upper Carboniferous Keluke Formation in South Qilian Mountains

PAN Meihui1,JIA Zhilei2,3,HOU Pengbo4   

  1. 1.College of Geography and Environment Science,Northwest Normal University,Lanzhou   730070,Gansu,China;
    2.Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Lanzhou   730000,Gansu,China;
    3.College of Geology and Mineral Resources,Lanzhou University,Lanzhou   730000,Gansu,China;  
    4.Gansu Electric Deign Institue,Lanzhou   730050,Gansu,China
  • Received:2014-07-20 Revised:2014-08-15 Online:2014-10-28 Published:2015-01-22

Abstract:

Huashigou copper mine is located about 120 km east of Akesai County,tectonically in the South Qilian area.The strata in the area are mainly distributed by Paleoproterozoic Dakendaban Group,Devonian-Carboniferous Amunike Formation and Carboniferous Keluke Formation.The marble,the main lithology of Carboniferous Keluke Formation,is considered to be carbonatite by former geologist as its closer relationship with quartz diorite of Huashigou copper mine.According to the determination and analysis of C,O isotopes,the result of δ13CPDB and δ18OSMOW values(-9.3‰~0‰ and 14.44‰~31.76‰ respectivly) shows that the marble belongs to carbonate rocks originate from sedimentation,and lower δ13CPDB and δ18OSMOW values is probably related to the magmatic hydrothermal of intruding of quartz diorite.

Key words: marble, C, O isotopes, marine environment, Huashigou copper mine, South Qilian Mountains

CLC Number: 

  • P618.41

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