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从山东郯城至安徽庐江有一条大的断裂带,称郯庐断裂。郯庐断裂深达上地幔,是世界大陆上规模最大的平移断裂之一,是环太平洋中、新生代断裂的重要组成部分。沂沭断裂带属郯庐断裂的中段,1948年地质界前辈李四光教授就指出:“横过山东从南边的沂水到北边的潍县有一强烈的破碎带,?
From Yuncheng in Shandong Province to Lujiang in Anhui Province there is a large fault zone called the Tan-Lu fault. The Tan-Lu fault reaches the upper mantle, which is one of the largest translocations in the world and an important part of Meso-Cenozoic faults in the Pacific Rim. Yishu fault zone belongs to the middle part of the Tan-Lu fault. In 1948, Professor Li Siguang, a predecessor of the geological community, pointed out: “There is a strong crushing zone in Shandong Province that runs from Yishui in the south to Wei in the north.”