[an error occurred while processing this directive] Global Geology 2019, 22(2) 67-77 DOI:   10.3969/j.issn.1673-9736.2019.02.01  ISSN: 1673-9736 CN: 22-1371/P
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quartz porphyry
zircon U-Pb age
geochemistry
Yuejinshan Fe-polymetallic deposit
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JIN Ye
CUI Bo
WANG Li
YANG Baihui
YIN Yue
LI Qing
WANG Shuo
CHEN Xiaohang
LIU Xiang
PubMed
Article by Jin Y
Article by Cui B
Article by Wang L
Article by Yang B
Article by Yin Y
Article by Li Q
Article by Wang S
Article by Chen X
Article by Liu X
Geochemistry and zircon U-Pb chronology of quartz porphyry in Yuejinshan Fe-polymetallic deposit of Heilongjiang
JIN Ye1, CUI Bo2, WANG Li1, YANG Baihui1, YIN Yue1, LI Qing1, WANG Shuo3, CHEN Xiaohang4, LIU Xiang4
1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China;
3. School of Earth Science and Researces, Chang'an University, Xi'an 710064, China;
4. Geological Survey of Hebei Province, Shijiazhuang 050000, China
ժҪ�� Quartz porphyry in Yuejinshan Fe-polymetallic deposit is one of the rock masses, which formed the granite belt relating to the late Yanshanian skarn-type Fe-polymetallic deposits in the eastern Heilongjiang, and is also closely related to the metallogenic space of the Fe-polymetallic deposits. Quartz porphyry has the zircon U-Pb concordia age of 125.0±1.1 Ma, overall showing high Si (SiO2=74.48%-75.00%), rich alkaline (Na2O+K2O=7.93%-8.17%, K2O/Na2O=1.39-1.46), and poor Mg (MgO=0.27%-0.31%), with the A/CNK value being 0.95-0.99, having the characteristics of obvious enrichment of LREE and medium Eu negative anomaly (0.69-0.74), indicating that the rock belongs to quasi-aluminous high potassium calc-alkaline series and has the same characteristics as those of the I-type granite. The rock is also characterized by the enrichment of LILE and active incompatible elements, and depletion of HFSE such as Nb, Ta, P and Ti, with the Mg# value being 32-37, indicating that the rock originated from partial melting of crustal materials. It can be concluded from the above characteristics or data and from the distribution of contemporary magmatic rocks in the area, that quartz porphyry in Yuejinshan Fe-polymetallic deposit was formed in a tectonic background of the subduction of the paleo-Pacific plate in late Yanshanian.
�ؼ����� quartz porphyry   zircon U-Pb age   geochemistry   Yuejinshan Fe-polymetallic deposit  
Geochemistry and zircon U-Pb chronology of quartz porphyry in Yuejinshan Fe-polymetallic deposit of Heilongjiang
JIN Ye1, CUI Bo2, WANG Li1, YANG Baihui1, YIN Yue1, LI Qing1, WANG Shuo3, CHEN Xiaohang4, LIU Xiang4
1. College of Earth Sciences, Jilin University, Changchun 130061, China;
2. College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China;
3. School of Earth Science and Researces, Chang'an University, Xi'an 710064, China;
4. Geological Survey of Hebei Province, Shijiazhuang 050000, China
Abstract: Quartz porphyry in Yuejinshan Fe-polymetallic deposit is one of the rock masses, which formed the granite belt relating to the late Yanshanian skarn-type Fe-polymetallic deposits in the eastern Heilongjiang, and is also closely related to the metallogenic space of the Fe-polymetallic deposits. Quartz porphyry has the zircon U-Pb concordia age of 125.0±1.1 Ma, overall showing high Si (SiO2=74.48%-75.00%), rich alkaline (Na2O+K2O=7.93%-8.17%, K2O/Na2O=1.39-1.46), and poor Mg (MgO=0.27%-0.31%), with the A/CNK value being 0.95-0.99, having the characteristics of obvious enrichment of LREE and medium Eu negative anomaly (0.69-0.74), indicating that the rock belongs to quasi-aluminous high potassium calc-alkaline series and has the same characteristics as those of the I-type granite. The rock is also characterized by the enrichment of LILE and active incompatible elements, and depletion of HFSE such as Nb, Ta, P and Ti, with the Mg# value being 32-37, indicating that the rock originated from partial melting of crustal materials. It can be concluded from the above characteristics or data and from the distribution of contemporary magmatic rocks in the area, that quartz porphyry in Yuejinshan Fe-polymetallic deposit was formed in a tectonic background of the subduction of the paleo-Pacific plate in late Yanshanian.
Keywords: quartz porphyry   zircon U-Pb age   geochemistry   Yuejinshan Fe-polymetallic deposit  
�ո����� 2019-02-03 �޻����� 2019-02-28 ����淢������  
DOI: 10.3969/j.issn.1673-9736.2019.02.01
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Supported by Project of China Geological Survey (No.12120113098300)

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