山字型构造或弧形构造,在滇东南地区占居着重要地位。作者曾在该区工作多年,认为本文提出的新街山字型构造体系与作者已发表的云南开远山字型构造及滇东南地区的其他弧形构造,在该区迭次出现,反映了在中生代以前曾多次发生过自北而南的不均衡的水平扭动运动;并认为自西而东在同一纬度上成带出现,在时间发展上从东而西依次增新。 Mountain font structure or curved structure, occupy an important position in southeast Yunnan. The author has worked in this area for many years and believes that the Xinjie Shan font structure system proposed in this paper has been published by the authors and has been published by other authors in the Kaiyuan Mountains and other arc structures in southeastern Yunnan, The Mesozoic has repeatedly wrenched unevenly from the north to the south for many times before. It is believed that the west-east belt has appeared on the same latitude and has been renewed in time from east to west.