Metallogenic Relationship Between Yanshanian Magmatic Rocks and Cu-Au-Mo Deposits in Guichi Area of Anhui: Evidences from Geological-geochemical-geophysical Characteristics(PDF)
《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]
- Issue:
- 2016年第04期
- Page:
- 444-463
- Research Field:
- 基础地质与矿产地质
- Publishing date:
Info
- Title:
- Metallogenic Relationship Between Yanshanian Magmatic Rocks and Cu-Au-Mo Deposits in Guichi Area of Anhui: Evidences from Geological-geochemical-geophysical Characteristics
- Author(s):
- YANG Xiao-yong; GU Huang-ling; YAN Zhi-zhong; LU Qi-liang; DUAN Liu-an; DENG Jiang-hong; ZHU Yong-sheng; WANG Mei-sheng; ZHAO De-kui
- 1. School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, Anhui, China; 2. No.324 Geological Team, Anhui Bureau of Geology and Mineral Exploration, Chizhou 247100, Anhui, China; 3. No.7 Gold Geological Party of Chinese People‘s Armed Police Force, Yantai 264004, Shandong, China
- Keywords:
- metallogenic regularity; Yanshanian; geophysics; geochemistry; magmatic rock; adakite; Guichi area; Middle-lower Yangtze metallogenic belt
- PACS:
- P588.12+1;P597+.3
- DOI:
- -
- Abstract:
- Guichi area in Anhui is one of the most important Cu-Au deposits in the Middle-lower Yangtze metallogenic belt, which is rich in gold, silver, copper, molybdenum, sulfur and other mineral resources. The metallogenic relationships among the geology, magmatic rocks, geochemistry-geophysics, other geological features and Au-Ag polymetallic deposits were systematically studied; Paodaoling gold deposit, Wushi gold and polymetallic deposits, Zhujiachong gold deposit, Tongshan Cu-Au deposit were analyzed in detail, and the geochemical characteristics of related magmatic rocks were summarized; furthermore, the porphyry types of deposits and the metallogenic specialization were analyzed particularly. Together with the published chronological data, the diagenetic mineralization in Guichi area can be divided into two phase. One is at ~140 Ma, the Early Cretaceous (Early Yanshanian), which is related to Cu-Au deposit; another is at ~125 Ma, related to Mo (Cu) deposit (mineralization). The two phases include high-potassium calc-alkaline and alkaline series, mainly as intermediate acid-acid granodiorite and granite, similar to other ore clusters in the Middle-lower Yangtze metallogenic belt. Combined with geological, geophysical and geochemical information, the prospecting characteristics of ore exploration are established. Moreover, it is helpful to deepen the metallogenic theory of metals such as Au, Ag(Pb-Zn) and Cu-Mo, and the metallogenic regularities, providing a scientific basis for ore prospecting breakthrough in Guichi area.
Last Update: 2016-07-19