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采用ESR(电子自旋共振)方法,对酒西盆地老君庙剖面晚新生代地层进行了系统测年.结果表明,玉门砾岩开始沉积的年代为3.45 Ma,结束时间为0.94 Ma;酒泉砾石层自0.84 Ma堆积.玉门砾岩开始堆积的时间大约是祁连山和青藏高原北部强烈隆升开始时.
The ESR (Electronic Spin Resonance) method was used to systematically study the Late Cenozoic strata in the Laojunmiao profile in the Jiuxi West Basin.The results show that the age of the Yumen conglomerate began to deposit was 3.45 Ma and the ending time was 0.94 Ma. The gravel layer has been deposited since 0.84 Ma, and the Yumen conglomerate began to accumulate at about the beginning of the intense uplift of the Qilian Mountains and the northern Tibetan Plateau.