MARGIN: 0cm 0cm 0pt" class=MsoNormal>man">SHRIMP U-Pb Zircon Dating and Geochemical Characteristics of Xiaomoshan Granites in mas-microsoft-com:office:smarttags" />Huarong County, Northern Hunan Provincemas-microsoft-com:office:office" />

• 责任者：Ma Tieqiu (Hunan Institute of Geology Survey ; Changsha 410011 ; China) ; Li Gang
• 刊名：Resources Survey & Environment
• 出版年：2010
• 卷期：31(1)
• 关键词：花岗岩 ; granite ; 湖南 ; Hunan Province
• 页码：p.1-11
• 图表：9 illus., 4 tables, 20 refs.
• 分类号：0801
• issnNo：ISSN1671-4814
• isbnNo：CN32-1640/N

MARGIN: 0cm 0cm 0pt" class=MsoNormal>man">Xiaomoshan granitic pluton in northern Hunan intrudes in Middle Proterozoic Lengjiaxi Formation, and is composed of early-stage coarse-medium-grained and medium-grained porphyritic biotitic monzonitic granite and late-stage fine-grained biotite-two-mica monzonitic granite.  SHRIMP U-Pb zircon dating of the granites is (122.5+2.1) Ma which belong to Early Cretaceous. The rocks were formed in a post-orogenic tectonic setting with the weakening of the stress and lithospheric extending and thinning after Jurassic compression orogeny.mas-microsoft-com:office:office" />