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渭南游河张坡沟第四纪地质剖面自1964年北京地质学院曹伯勋等同志研究以来,地科院、科学院植物所、西北大学、地质部第三石油普查大队等单位,又相继进行了不少工作.但多偏重于生物地层学研究.本文试图依据古地磁学资料,并结合前人生物地层学及古气候学资料,对这一剖面的地层划分及形成年代作一初步分析.一、本剖面地层简介游河位于西安以东的渭南县南部,蓝田东北约50公里.张坡沟是游河的一个支沟,雨季时有水,雨季过后则为干沟.
Quaternary geological profile of Zhangpo ditch in Weinan river Since the study of Cao Bosun and other comrades of Beijing Geological College in 1964, many units such as the Institute of Botany, Academy of Sciences, Northwestern University and the Third Petroleum Census Brigade of the Ministry of Geology have successively carried out many Work.But more emphasis on bio-stratigraphic research.This paper attempts to make a preliminary analysis of stratigraphic division and formation of this section based on paleomagnetic data, combined with previous bio-stratigraphy and paleoclimate data. Section profile Brief introduction The river is located in the south of Weinan County, east of Xi’an about 50 km northeast of Lam Tin. Zhangpo ditch is a branch channel of the river, rainy season when there is water, dry season after the rainy season.