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一、引言1964年夏,作者为辅导地质力学进修班同志的实习,到四峨山地区进行地质构造调查,取得了许多资料,1972年春,在成都地质学院举办地质力学短训班实习期间,又先后到该区作了补充工作。通过前后两次工作,对该区构造体系划分获得了一些粗浅认识,供大家讨论。所讨论地区位于四川省乐山、峨边和马边三县接壤地带。北起乐山县九里,南至马边县朝天马,西达峨边县江岸坝,东到乐山县福禄场.地理位置约在北纬29°11′—29°27′,东经103°25′—103°40′之间。
I. INTRODUCTION In the summer of 1964, for the purpose of mentoring the comrades of the training class of geomechanics, the author made an investigation into the geology structure of Sishan area and obtained a lot of information. In the spring of 1972, during the geotechnical short-training internship at the Chengdu Institute of Geology, To the area made a supplementary work. Through the previous work and the second work, we got some superficial understanding of the tectonic system of this area for discussion. The area in question is located in Leshan, Sichuan, Ebian and Mabian bordering three counties. Jiuli in Leshan County in the north, Chaotianma in Mabian County in the south, Jiangba Dam in Xida Ebian County in the south and the Phuoc Lok Field in Leshan County in the east. The geographical location is about 29 ° 11’-29 ° 27’N and 103 ° 25’E -103 ° 40 ’.