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本文根据堆积物具有的多方面共同特点,确认黑龙江省东部河谷地区(河床、河漫滩和一级阶地)堆积物为流水成因。又根据岩石地层、年代地层、磁性地层及孢粉资料综合分析与评价该地区发育的冰缘现象的形成时代,特别是对嘉荫县团结沟大青剖面同时发育的四层冰缘层内卷划分为四个形成期:第一形成期称中团结沟冰缘阶,时代47400±2800—22000±250年;第二形成期称晚团结沟早冰缘阶,时代14800±740—13000年;第三形成期称晚团结沟晚冰缘阶,时代11370±100—10000年;第四形成期称大青冰缘期,时代约6500年。
In this paper, according to the common features of the deposits, it is confirmed that the sediments of river basins, river floodplains and first terrace in the eastern Heilongjiang Province are the causes of water flow. Based on the data of lithostratigraphy, chronostratigraphy, magnetic stratigraphy and sporopollen, a comprehensive analysis and evaluation of the formation of ice margins in this area is carried out, especially for the co-development of four layers of ice-perch in the Daqing section of Tuanjiegou, Jiayin County It is divided into four formation periods: the first formation period is called the middle margin of the integration of the icy margin, and the age is 47400 ± 2800 - 22000 ± 250 years; the second formation period is called the early margin of the neotectonic period, 14800 ± 740-1000 years old; The third formation period is called the Late Neolithic Devonian Order, with an age of 11370 ± 100 to 10000 years. The fourth formation period is called the Great Ice Progression Period, with an age of about 6,500 years.