| Geology, Mineralization, Fluid Inclusion and Stable Isotope
of the Early Cretaceous Sn and Associated Metal Deposits in
the Southern Great Xing’an Range, NE China: A Review |
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| 作者姓名： | WANG Chengyang LIU Guanghu SUN Zhenjun LIU Jie LI Jianfeng LIANG Xinyang |
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| 基金项目： | The authors thank anonymous reviewers for their constructive comments and suggestions.The paper is supported by Key Discipline Construction Projects of Institute of Disaster Prevention;Prospecting Projects of National Important Mineral Concentration Areas of Development Research Center of China Geological Survey |
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| 摘 要： | The Southern Great Xing'an Range(SGXR) hosts a number of Early Cretaceous Sn and associated metal deposits, which can be divided into three principal types according to their geological characteristics: skarn type deposits, porphyry type deposits and hydrothermal vein type deposits. Fluid inclusion assemblages of different types of deposits are quite different, which represent the complexities of metallogenic process and formation mechanism. CH_4 and CO_2 have been detected in fluid inclusions from some of deposits, indicating that the ore-forming fluids are affected by materials of Permian strata. Hydrogen and oxygen isotope data from ore minerals and associated gangue minerals indicate that the initial ore fluids were dominated by magmatic waters, some of which had clearly exchanged oxygen with wall rocks during their passage through the strata. The narrow range for the δ~(34)S values presumably reflects the corresponding uniformity of the ore forming fluids, and these δ~(34)S values have been interpreted to reflect magmatic sources for the sulfur. The comparation between lead isotope ratios of ore minerals and different geological units' also reveals that deeply seated magma has been a significant source of lead in the ores.
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| 关 键 词： | fluid inclusion stable isotope Early Cretaceous Sn and associated metal deposits Southern Great Xing’an Range |
| 收稿时间： | 2019/5/15 0:00:00 |
| 修稿时间： | 2019/8/14 0:00:00 |
Geology,Mineralization, Fluid Inclusion and Stable Isotope of the Early Cretaceous Sn and Associated Metal Deposits in the Southern Great Xing'an Range,NE China: A Review |
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| Authors: | WANG Chengyang LIU Guanghu SUN Zhenjun LIU Jie LI Jianfeng and LIANG Xinyang |
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| Institution: | 1 Institute of Disaster Prevention, Sanhe, Hebei 065201, China,1 Institute of Disaster Prevention, Sanhe, Hebei 065201, China,1 Institute of Disaster Prevention, Sanhe, Hebei 065201, China,1 Institute of Disaster Prevention, Sanhe, Hebei 065201, China,2 College of Urban and Environmental Science, Liaoning Normal University, Dalian, Liaoning 116029, China and 1 Institute of Disaster Prevention, Sanhe, Hebei 065201, China |
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| Abstract: | The Southern Great Xing'an Range (SGXR) hosts a number of Early Cretaceous Sn and associated metal deposits, which can be divided into three principal types according to their geological characteristics: skarn type deposits, porphyry type deposits and hydrothermal vein type deposits. Fluid inclusion assemblages of different types of deposits are quite different, which represent the complexities of metallogenic process and formation mechanism. CH4 and CO2 have been detected in fluid inclusions from some of deposits, indicating that the ore‐forming fluids are affected by materials of Permian strata. Hydrogen and oxygen isotope data from ore minerals and associated gangue minerals indicate that the initial ore fluids were dominated by magmatic waters, some of which had clearly exchanged oxygen with wall rocks during their passage through the strata. The narrow range for the δ34S values presumably reflects the corresponding uniformity of the ore forming fluids, and these δ34S values have been interpreted to reflect magmatic sources for the sulfur. The comparation between lead isotope ratios of ore minerals and different geological units’ also reveals that deeply seated magma has been a significant source of lead in the ores. |
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| Keywords: | fluid inclusion stable isotope Early Cretaceous Sn and associated metal deposits Southern Great Xing'an Range |
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