quaternary research

Eco-environment change and influence factors in the Songnen plain since the Quaternary;松嫩平原第四纪以来生态环境演化的影响因素DOQ汉语字典

Discovery of Quaternary potassic volcanic rocks and the establishment of Sailipu Formation in West Gangdis of Tibet, China;冈底斯西段第四纪钾质火山岩的发现及赛利普组的建立DOQ汉语字典

Character of heavy minerals in Quaternary sediments in Yichang area and its relationship with cut-through of the Yangtze Three Gorges,China;宜昌地区第四纪沉积物重矿物特征及其与三峡贯通的关系DOQ汉语字典

Re-study on the Lower Boundary of Quaternary System in the North China Plain;华北平原第四系下限的再研究DOQ汉语字典

The Quaternary system, which mainly consists of weak consolidated sandstone and mudstone, has a thickness of more than 3400 meters.该区第四系厚达3400m,以固结较差的砂、泥岩为组成特征,长期低温和沉积水体的高盐度等条件为生物气的产生提供了丰富的物质基础,砂泥岩互层的高度发育为生物气的成藏提供了良好的储集和封盖条件,更新世以来一直存在的同沉积背斜为生物气提供了良好的圈闭条件,充足的地下水和地下水的定向流动将生物气的生、储和封存体系有机地联系在了一起,并构成了生物气聚—散的动态平衡。DOQ汉语字典

In Jingyuan region,the Quaternary system developed well,and zoned clearly,and there are complex genetical types.靖远地区第四系发良良好,分带性明显,成因类型较为复杂。DOQ汉语字典

The exploration method of late Quaternary shallow biogenic gas reservoirs in Hangzhou Bay area.;杭州湾地区晚第四纪浅层生物气藏勘探方法研究DOQ汉语字典

Environmental Changes of Late Quaternary in Source Rigion of The Huanghe River;黄河源地区晚第四纪环境变迁DOQ汉语字典

Evolution of Paleovegetation and Paleoenvironment of Late Quaternary on Basis of Spore-pollen Analysis in Shanghai Region;从孢粉推测上海地区晚第四纪以来的植被、环境演变DOQ汉语字典

Quarternary sediments in Shenyang are widely distributed with NE thin and SW thick,which basically is multilayered sand compound texture:the surface is a relatively thin clay,downward relatively thick and grading layers of fine medium grained sand,coarse grained sand,gravelly sand,and gravel.沈阳市第四纪沉积物分布广泛，北东薄、南西厚。DOQ汉语字典

In the Tathang and Yan Mountains,incised and meandering valleys formed in Quarternary.太行山、燕山山地中的深切曲流河谷形成于第四纪。