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一、超基性岩体分布与地质构造的关系按照1/400万全国构造体系图,新疆超基性岩体主要分布于欧亚山字型构造、天山东西复杂构造带、帕米尔歹字型及昆仑-阿尔金弧形构造等4个大的构造体系中,共计有十九个岩带,列表如下: 就岩带、岩体与构造的关系可归纳下列四点: (一)岩带各分布于Ⅰ、Ⅱ级压性或压扭性断裂的旁侧,以分布于断裂上盘居多,岩带展布的方位与各构造体系主断裂延伸方位一致,长百公里至数百公里,一般宽数公里至十余公里,除个别岩带外(唐巴勒、玛依拉山),线型明显。
First, the relationship between the distribution of ultramafic rocks and geological structure According to 1/4 million national tectonic map, Xinjiang ultramafic rocks are mainly distributed in the Eurasian fonts, Tianshan complex structures, Pamir and Kunlun - Altyn arc structure and other four large tectonic system, a total of 19 rock belt, the list is as follows: Rock belt, rock mass and structure can be summarized in the following four points: (A) Ⅰ, Ⅱ compressive or compressive-torsional fracture side to distribute in the majority of faults on the plate, rock belt distribution of the orientation and extension of the main fault extension of the tectonic system, from a hundred kilometers to hundreds of kilometers, the general width Kilometers to more than ten kilometers, with a few individual rock belt (Fowler, Mayu La), line type obvious.