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对昌宁—孟连带西区的两个地层问题进行了讨论。根据牙形刺和放射虫的发现将原定为拉巴组的塔拉弄—南雅条带的时代厘定为晚泥盆世至早石炭世 ,时代大致与南皮河群的弄巴组或“中区”的“上泥盆统”相当 ,它们之间的确切关系仍有待进一步研究。怕拍组实际上主体属晚二叠世晚期 ,仅顶部可能包含有少量下三叠统印度阶最底部的沉积。对怕拍组的研究证实了澜沧运动的存在 ,昌宁—孟连带自此开始了由海洋盆地向造山带的演变进程 ,这一过程持续达七千万年之久。
The two strata problems of Changning-Menglian belt west area were discussed. Based on the findings of conodonts and radiolarians, the age of the Taraon-Nanya strip, originally designated as the Raba Formation, was defined as Late Devonian to Early Carboniferous, Central “,” the “Devonian” fairly, the exact relationship between them remains to be further studied. In fact, the sub-clan group is mainly hosted in the late Permian Late Cretaceous. Only the top part may contain a small amount of sediments at the bottom of the lower Triassic Indian order. The research on the fearful-beat group confirmed the existence of the Lancang movement. The Changning-Menglian belt began the process of evolution from the marine basin to the orogenic belt, which lasted for 70 million years.