图1 大关地震区的主要断裂及马边—昭通地震带1900年以来M≥5.0级地震震中分布图
Fig.1 Major faults in Daguan seismic area and epicentral distribution of
the events
(M≥5.0) along Mabian-Zhaotong seismic belt since 1900
①马边—奕良断裂;②巧家—莲峰断裂;③洒鱼河断裂;④宜宾断裂