• 责任者：Liu Liang (State Key Laboratory of Mineral Deposits Research ; Nanjing University ; Nanjing 210093 ; China) ; Qiu Jiansheng
• 刊名：Geological Review
• 出版年：2011
• 卷期：57(3)
• 关键词：石英二长岩 ; quartz monzonite ; 岩石包体 ; rock inclusions ; 浙江 ; Zhejiang Province
• 页码：p.327-336
• 图表：6 illus., 2 tables, 32 refs.
• 分类号：0801
• 出版序号：811
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

MARGIN: 0cm 0cm 0pt" class=MsoNormal>mary name="EnDivSummary">Numerous mafic microgranular enclaves (MMEs) with different shapes are found in quartz monzonites of the Muchen pluton in mas-microsoft-com:office:smarttags" />Zhejiang Province. Precise LA-ICP-MS U-Pb dating was conducted on zircon grains extracted from the host quartz monzonites and the MMEs, yielding crystallization ages of (112.1±1.0) Ma and (112.4±1.2) Ma, respectively. The consistent ages within analytical errors suggest that the host rocks and MMEs were coeval, providing crucial evidence for magma mixing during their petrogenesis. The MMEs commonly show plastic forms and contain similar K-feldspar megacrysts to the host rocks. Furthermore, plagioclases with core-rim zoning texture and apatites with euhedral acicular shape occur widely in the MMEs. These micrographic features are also consistent with the involvement of magma mixing in their petrogenesis.