【摘要】 对天山地区的调查发现天山北麓有较好的岩石漆发育。利用特殊的超薄片磨制技术,在对100 个岩石漆超薄切片的显微影象分析对比后,初步建立了研究区内晚更新世以来岩石漆显微层理的标准层序,经过年代校正后,给出了该层序的大致年代控制。并对其在估计河流阶地、断层陡坎等地貌面时代方面的应用作了探讨。更多还原

【Abstract】 We collected 100 rock varnish samples from the northern Tian Shan for ultra-thin sectioning. Laterally continuous dark and orange microlaminations are observed in these ultra-thin sections of rock varnish. Microprobe chemical analyses indicate that dark layers in the varnish are rich in Mn and orange layers are poor in Mn. Microscopic examinations of varnish ultra-thin sections reveal a lamination pattern that is regionally consistent and comparable. Based on paleoclimatic and geomorphic age control,the Late Pleistocene varnish lamination sequence is tentatively established and its chronological impications are explored as well.更多还原