力馬河区域地質概述本文所述的地区位于康滇地盾的中部东側。区內出露的主要是前震旦紀变質岩系和部分中生代的陸相沉積岩層,而古生代及震旦紀海相地層僅分布于区域外圍。无論是中酸性、基性或超基性的火成岩均广泛出露于古生代以前的地層中,加上多次的構造作用,使这里的大部分岩石都遭受深度的变質。(如圖1) Lima River Regional Geology Overview The area described in this article is located on the eastern side of the central Conti Dian Shield. Pre-Sinian metamorphic rocks and some Mesozoic terrigenous sedimentary rocks are exposed in the area, while the Paleozoic and Sinian marine strata are only distributed in the periphery of the area. Both acidic and basic or ultrabasic igneous rocks are widely exposed in pre-Paleozoic strata, combined with multiple tectonic actions that have caused most of the rocks here to undergo deep metamorphism. (Figure 1)