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三江平原位于我国的东北端,总面积约42500平方公里,是我国垦荒的重点地区之一。该区第四纪的研究曾长期处于空白,有关专门论述很少。本文系笔者于1974和1976年参加该区野外调查所获有关资料的初步整理,谬误之处望指正。一、地貌地质概述三江平原是一个辽阔的沼泽化冲积低平原,只有少数构造侵蚀残山和玄武岩残丘散布其间,才打破了单一的平原地貌景观。海拔高度一般为50-60米,最低的抚远三角洲只高出海平面34米。总地势由西南向东北缓缓倾斜,总坡降1/10000左右。松花江、七星河、挠力河、别拉洪河、浓江等平原河流应顺着总倾向而发育,除松花江外,一般中
Sanjiang Plain is located in the northeast end of China, with a total area of about 42,500 square kilometers, is one of the key areas of reclamation in China. Quaternary studies in the area have long been in vain, with little discussion about the subject. This article is the author in 1974 and 1976 to participate in the field investigation of the area obtained preliminary information on the relevant information, look at the error correction. First, the geomorphological geological overview Sanjiang Plain is a vast swamp alluvial low plain, only a small number of tectonic eclogites and basaltic remnants of the distribution, before breaking a single plain landscape. Altitude is generally 50-60 meters, the lowest Fuyuan Delta is only 34 meters above sea level. The total terrain slowly tilted from southwest to northeast, the total slope of about 1/10000. Songhua River, Qixinghe, Naolihe, Belajang River, thick river and other plain rivers should follow the general trend of development, in addition to the Songhua River, the general