在这种情况下，铀铅定年法被用来确定样本中一半的砂岩是在阿巴拉契亚山脉花岗岩形成的同时形成的。
In this case, Uranium-Lead Dating was used to establish that half of the sandstone in the samples was formed at the same time the granite in the Appalachian Mountains was formed.
在某些富锂、氟含稀有金属花岗岩的石英和钾长石斑晶中常见（半）雪球结构。
The snowball texture in quartz and K_feldspar phenocrysts is commonly observed in some Li_F enriched and raremetal_bearing granites.
应用地表标志带和隐伏花岗岩进行隐伏、半隐伏石英脉型黑钨矿床预测和评价，必须研究其地质地球化学类型，只有属于钨锡硫化物型的标志带，才具有找矿评价意义。
The use of the surface indication zone and hidden granite body to the prospecting forecast and evaluate the hidden and semi-hidden quartz-vein type wolframite deposit is studied.
华南稀土花岗岩风化壳主要可分为腐植层、全风化层和半风化层。
The weathering crust of REE granites in southern China can be divided into humic layer, completely weathering layer and partly weathering layer.
华南稀土花岗岩风化壳主要可分为腐植层、全风化层和半风化层。
The weathering crust of REE granites in southern China can be divided into humic layer, completely weathering layer and partly weathering layer.
应用推荐