本文为中国地质调查局国土资源大调查项目《内蒙古 1∶5 万杭嘎勒幅、哈尔扎盖幅区域调查》（编号：K48E02005 1212010610419）成果。
杭嘎勒地区中二叠世石英闪长岩，轻重稀土分馏程度较强，无明显铕异常，稀土配分曲线为向右倾，属轻稀土富集型。中二叠世石英闪长岩显示了 I 型花岗岩的特点。中二叠世石英闪长岩表现出元素Th、Ta、Sr、Hf元素富集，而Nb、La、P元素亏损。AR SiO2图解显示，主体与包体岩石虽同属钙碱性+拉斑玄武系列区，显示了同源岩浆演化的特点，在R1 R2图解上，大部分样品集中在碰撞前与碰撞后花岗岩区分界处，以碰撞前为主；在Nb Y图解上，样品落在了火山弧－同碰撞花岗岩区；在Rb－Y+Nb图解上，样品落在了火山弧花岗岩区，反映石英闪长岩形成于板块边缘的岩浆弧环境。LA ICP MS 锆石U Pb 定年表明主体岩石年龄（2664±37）Ma。 杭嘎勒晚二叠世石英闪长岩为碰撞前火山弧花岗岩，研究区在晚二叠世时属于活动大陆边缘的火山弧。
Quartz diorites in Hanggale area are characterized by strong REE fractionation, enrichment of LREE, and without significant Eu anomalies, implying an I type granite. Enrichment of Th、Ta、Sr、Hf elements and depletion of Nb, Sr, P, Ti elements. In the R1 R2 diagram, most of the samples are concentrated in the pre collision granite area. In the Nb Y diagram, the samples fall into the area of the volcanic arc syncollisional granite. In the Rb (Y+Nb)diagram, the samples lie in the area of volcanic arc granite. LA ICP MS zircon U Pb dating shows that its age is 266.4±3.7Ma. The Middle Permian quartz diorite of Hanggale was a pre collisional volcanic arc granite, and Hanggale area was a volcanic arc that belonged to active continental margin in Middle Permian.
刘治博,张维杰.2014.内蒙古阿拉善右旗杭嘎勒中二叠世石英闪长岩地球 化学特征和LA ICP MS锆石U Pb定年[J].地质学报,88(2):198-207.
Liu Zhibo.2014. Geochemical Characteristics and LA ICP MS Zircon U Pb Dating of the Middle Permian Quartz Diorite in Hanggale, Alax Right Banner, Inner Mongolia[J]. Acta Geologica Sinica,88(2):198-207.
