• 责任者：Yin Jiyuan (Guangzhou Institute of Geochemistry ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Yuan Chao
• 刊名：Geotectonica et Metallogenia
• 出版年：2011
• 卷期：35(2)
• 关键词：构造演化 ; structural evolution ; 岩浆活动 ; igneous activity ; 准噶尔盆地 ; Junggar Basin
• 页码：p.278-291
• 图表：3 illus., 1 table, 118 refs.
• 分类号：0300
• issnNo：ISSN1001-1552
• isbnNo：CN44-1595/P

Carboniferous to Permian is a critical period for tectonic evolution of the Central Asian Orogenic Belt and formation of major metal ore deposits in the northern Xinjiang.  As the western oft-com:office:smarttags" />Junggar Basin is a ore resource-rich area, its tectonic settings during that period have attracted wide attention.  The statistics of geochronological data indicate that the peak period of magmatic activities is 300～310 Ma in Western Junggar.  Voluminous granitoids of various types (A-type granites, charnockite I-type granites, adakite, magnesian diorite) formed in this period, and the isotopic data of these rocks suggest significant addition of juvenile material.  The authors argue that this dramatic change was due to the onset of ridge subduction.  This model supplies also a plausible explanation for mechanism of Cu-Au mineralization in the period.  Moreover, ridge subduction was likely important for amalgamation and crustal growth in the CAOB.