论文部分内容阅读
作者近两年来在研究渡口-西昌地区地壳稳定性时,对年龄尚存争议的昔格达层归属问题,进行了初步探讨。本区广泛分布昔格达层,最初,常隆庆先生称其为“浑且层”,划为第三纪上新世;后来袁复礼教授(1938)改称为“昔格达层”,并于1958年将其划为第四纪中期或晚期的冰期湖相纹泥类型;1966年杨理华等人及1977年国家地震局西南烈度队,将昔格达层划分为下更新统。本文报道利用热发光方法测定其沉积年代的初步结果,以及几点认识。
In the past two years, when studying the crustal stability of the Dukou-Xichang region, the author made a preliminary study on the age-controversial problem of the attribution of the Škada layer. In the area, the Xigeda layer was widely distributed. Initially, Mr. Chang Longqing described it as “muddy and layer” and classified it as the Tertiary Pliocene. Later Professor Yuan Fuli (1938) was renamed as “the Xigeda layer” and in 1958 They are classified as glacial lacustrine mudstones in the middle or late Quaternary. Yanglihua et al. In 1966 and Southwest China National Seismological Bureau in 1977 divided the Xigeda layer into lower Pleistocene. This article reports the preliminary results of the dating of sediments by thermoluminescence and some observations.