论文部分内容阅读
博格达山北麓山前断裂西段全长１４０ ｋｍ ，由５ 条雁列状排列的逆断裂组成。全新世时期，古牧地断裂的最新活动发生在６．８２±０．５４～４．８７±０．３９ Ｋａ Ｂ．Ｐ．之间；四工河口断裂切割Ⅱ级河流阶地，最新活动时间与古牧地断裂大体相同；泉泉子断裂切割Ⅰ级河流阶地，最新活动发生在３．７５±０．４１ Ｋａ Ｂ．Ｐ．；热水河断裂及东风牧场断裂由于缺乏断代年龄实测数据，无法对其最新活动时间作出判断，但是推断它们也是全新世活断裂
The northern section of the northern foot of Bogda Mountain, with a total length of 140 km, consists of five reverse faults arranged in an echelon sequence. During the Holocene, the latest activity of the ancient grazing fault occurred at 6.82 ± 0.54 ~ 4.87 ± 0.39 Ka B. P. ; The Sijiahe Estuary fault cutting Ⅱ grade river terraces, the latest active time and ancient Muti fracture roughly the same; Quanqunzi fault cutting Ⅰ grade terraces, the latest activity occurred at 3.75 ± 0.41 Ka B. P. ; The fault of the Heishuihe fault and the break of the Dongfeng ranch can not judge the latest activity time due to the lack of the data of the age of the fault, but it is inferred that they are also the faults of the Holocene active fault