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他念他翁山中段地处青藏高原东南部和云贵高原过渡地带,海拔4 200 m以上保存着确切的第四纪冰川遗迹.对其进行深入研究,不仅可以重建横断山脉冰川作用的演化历史,还能够为青藏高原的隆升机制提供重要依据.采用野外地貌调查与电子自旋共振测年(ESR)相结合的方法,查明他念他翁山第四纪冰川发育的地貌特点,并初步对研究区的冰期系列进行划分.结果显示,他念他翁山中段古冰川类型主要为山麓冰川、山谷冰川和冰斗冰川.晚第四纪以来至少经历了4次冰川作用,分别为倒数第二次冰期(MIS 6),年代为(192±51)~(207±45)ka;末次冰期中期(MIS 3),年代为(55±8)~(54±9)ka;末次冰盛期(M IS 2),年代为(25±1)~(38±6)ka,以及全新世新冰期/小冰期(MIS 1).
He remembered that the middle section of his mountain was located in the transitional zone of southeastern Qinghai-Tibet Plateau and the Yunnan-Guizhou Plateau with an elevation above 4 200 m, which preserved the exact Quaternary glacial relics.It can not only reconstruct the evolutionary history of the cross-mountain glaciers, But also provide an important basis for the uplift mechanism of the Qinghai-Tibet Plateau.Using the combination of the field survey and ESR to find out the features of the topography of Quaternary glaciers in Mount Tengshan, The division of glacial series in the study area shows that the ancient glaciers in the middle of Heungshan Mountain are mainly foothills, valley glaciers and glacial glaciers, and at least four glaciers have been experienced since the late Quaternary, During the second glacial (MIS 6), the age was (192 ± 51) ~ (207 ± 45) ka; in the middle of the last glacial period (MIS 3), the age was (55 ± 8) ~ (54 ± 9) ka; (M IS 2) with ages of (25 ± 1) ~ (38 ± 6) ka and the Holocene / Little Ice Age (MIS 1).