DOI: 10.1007/s00531-015-1261-4
Scopus记录号: 2-s2.0-84958049046
论文题名: Geochronology and geochemistry of the Badaguan porphyry Cu–Mo deposit in Derbugan metallogenic belt of the NE China, and their geological significances
作者: Gao B. ; Zhang L. ; Jin X. ; Li W. ; Chen Z. ; Zhu M.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2016
卷: 105, 期: 2 起始页码: 507
结束页码: 519
语种: 英语
英文关键词: Adakite
; Badaguan porphyry Cu–Mo deposit
; Derbugan metallogenic belt
; Mongol–Okhotsk Orogen
; Triassic
Scopus关键词: adakite
; copper
; geochronology
; igneous geochemistry
; metallogenesis
; molybdenum
; ore deposit
; orogenic belt
; porphyry
; Triassic
; China
; Mongol-Okhotsk Fold Belt
英文摘要: The Badaguan porphyry Cu–Mo deposit belongs to the Derbugan metallogenic belt, which is located in the Ergun block, NE China. In the mining area, the Cu–Mo mineralization mainly occurs in quartz diorite porphyry and is hosted within silicified-sericitized and sericite alteration zone. Geochemical results of the host porphyry is characterized by high SiO2, high Al2O3, low MgO, weak positive Eu anomalies and clearly HREE depletion, high Sr, low Y and low Yb, similar to those of adakite. The Sr–Nd isotopic composition of the host porphyry displays an initial (87Sr/86Sr)i ratio of 0.7036–0.7055 and positive Nd(t) values of +0.1 to +0.6, which are similar to the OIB, reflecting the source of the host porphyry may derive from subducted ocean slab, and the new lower crust also had some contribution to the magma sources. The SIMS zircon U–Pb age from the host porphyry is 229 ± 2 Ma. The Re–Os isochron age for the molybdenite in the deposit is 225 ± 2 Ma closed to zircon U–Pb age of the host porphyry, indicating that Cu–Mo mineralization event occurred in Triassic. Combining the geology–geochemistry of the host porphyry and the regional tectonic evolution, we infer that the subduction processes of Mongol–Okhotsk oceanic slab under the Ergun block led to the formation of the Badaguan porphyry Cu–Mo deposit during the Triassic. © 2015, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958049046&doi=10.1007%2fs00531-015-1261-4&partnerID=40&md5=359c5bbc6e54f1ef085fa495316b2627
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70190
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Gao B.,Zhang L.,Jin X.,et al. Geochronology and geochemistry of the Badaguan porphyry Cu–Mo deposit in Derbugan metallogenic belt of the NE China, and their geological significances[J]. International Journal of Earth Sciences,2016-01-01,105(2)