【摘要】 乌鲁木齐市雅玛里克断裂是博格达弧形构造第二排断裂的西翼尾段部分。断裂从乌鲁木齐市中部通过,基本由两条断层构成,断裂构造地貌明显,断裂带的宽度可达百余米。通过该断裂错动第四纪地层和变动地貌面的反复勘察,大量断层地质剖面的观察,与断层活动相关的第四纪堆积物的年代测定,经分析认为雅玛里克断裂最新活动时代具有"西老东新"空间变化特点。断裂活动时代大体分为3段:葛家沟以西至雅玛里克山西北麓,为中更新世晚期活动;葛家沟以东到铁厂沟,为晚更新世活动;铁厂沟以东为全新世活动。更多还原

【Abstract】 Yamalike fault is the western part of second row fault of Bogeda arcuate structure.The fault goes across Urumqi city and consists of two faults with obvious geofractures and tectnic landform and hundreds of meter broad riftzone.Through investigation of the fault overlaying the quaternary strata and varying morphologic unit repeatedly,observing of a lot of geological section of the fault,determinating the age of the quaternary deposit related to fault activity,the analysis result showed the latest active age of Yamalike fault had the spatial characteristics: old in west and new in east.There are three parts: the part from the west of Gejiagou to northwest of Yamalikeshan mountain is latest mid Pleistocene epoch activity;the part from the east of Gejiagou to Tiechanggou is late Pleistocene and the east of Tiechanggou is Holocene activity.更多还原