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取该区活动断裂中的断层泥,并首次在几个断层面附近的劈理化黄土中取样测出热释光年龄。12个断层热释光年龄数据在20—240kaBP之间变化,证实中更新世晚期和晚更新世期间断层曾有一次活动,为本区断层的活动性提供了证据。本研究成果也为西安地裂缝的活断层与人工抽水双重成因提供了证据。
Taking the fault mud in the active fault of this area, the thermoluminescence age was taken for the first time in several split-sectioned loess samples. Twelve faulted thermoluminescence ages varied from 20 to 240 kbps, confirming that there was an event in the late Middle-Pleistocene and late Pleistocene faults that provided evidence for the activity of the fault in this area. The results of this study also provide evidence for the dual causes of active faults and artificial pumping in ground fissures in Xi’an.