• 责任者：Ren Jiangbo (Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Xu Jifeng
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2011
• 卷期：30(4)
• 关键词：斑岩铜矿床 ; porphyry copper deposit ; 云南 ; Yunnan Province
• 页码：p.581-592
• 图表：9 illus., 2 tables, 48 refs.
• 分类号：1001
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

Located in Zhongdian island arc belt in northwestern Yunnan Province, the Pulang superlarge porphyry copper deposit was formed in Late Triassic during the westward subduction of the Ganzi-Litang ocean plate below Zhongdian microplate. The mineralized rocks of the Pulang porphyry copper deposit mainly include quartz dioritic porphyries and quartz monzonitic porphyries in a complex pluton, and economic ores are mainly preserved in the quartz monzonitic porphyries. The quartz dioritic porphyrites were intruded by later quartz monzonitic porphyries, but the two kinds of rocks display similar geochemical characteristics, such as similar REE patterns, incompatible trace element patterns and initial ⁸⁷Sr/⁸⁶Sr and ¹⁴³Nd/¹⁴⁴Nd ratios, suggesting that they were cogenetic products or were derived from similar sources. Therefore, the authors hold that the Pulang porphyry copper deposit was probably related to the westward subduction of Ganzi-Litang oceanic plate during Late Triassic.