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该测区位于张广才岭西侧,山高林密,第四系覆盖广泛,给填图工作带来了不少困难。在填图工作后期利用1/20万航磁资料配合地质填图,对划分岩体及断裂构造取得了一定效果。现将工作中的一些体会概述如下,仅供参考。一、地质概况及其地球物理特征本区地层以二迭系为主,由老至新为一拉溪组安山岩、英安岩及流纹岩等,杨家沟组主要为板岩、变质砂岩,马达屯组为疑灰熔岩、安山岩及流纹岩等。上三迭统西土山
The survey area is located on the west side of Zhang Guangcai Mountain, with a high mountain and dense forest. The Quaternary has extensive coverage and has brought many difficulties to the mapping work. In the later period of mapping work, 1 / 200,000 pieces of aeromagnetic data were used in conjunction with geological mapping to obtain some results for the division of rock mass and fault structure. Now some of the work experience is summarized below, for reference purposes only. I. Geological General Situation and Geophysical Characteristics The strata of this area are dominated by Permian, consisting of andesite, dacite and rhyolite from Laoxi to Lixi Formation. The Yangjiagou Formation is mainly composed of slate and metamorphic sandstone , Madatun Formation is suspected gray lava, andesite and rhyolite. On the three Diego West soil