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这里介绍了大地电磁测深在色林错-申扎北剖面的应用,根据电性特征对盆地边界、基底埋深和盆地基本构造格架给出了初步认识。分析表明:色林错地区表现为“南隆北坳”特征,中北部凹陷最大深度接近5km,南部隆起部分基底埋深小于2km,发育郎山组和多尼组地层,盆地内发育多条断裂,控制了盆地形态。
This paper introduces the application of the magnetotelluric sounding to the Selin fault-Xinshabei section, and gives a preliminary understanding of the basin boundary, basement depth and basic structural framework of the basin based on the electrical characteristics. The analysis shows that the fault of Seirin fault area is characterized by “Nanlongbei Au”, the maximum depth of the central-northern depression is nearly 5km, the buried depth of the basal part of the southern uplifted part is less than 2km, and the strata of Langshan Formation and Duoni Formation are developed. Fractures dominated basin morphology.