张夏黄土组成特征及其成因分析  

Characteristics of the composition of the Zhangxia loess and its origin

作　　者：辛良杰[1] 

机构地区：[1]山东师范大学人口资源与环境学院,山东济南250014

出　　处：《中国地质》2005年第1期55-61,共7页Geology in China

基　　金：山东省自然科学基金重点项目(Z2000E01)资助。

摘　　要：大沙河沿岸阶地、山麓地带广泛发育厚度不一的黄土层堆积,笔者对张夏黄土剖面研究后认为,张夏黄土物质来源复杂,既有西风漂流、西北气流、莱州湾气流搬运来的物质,又有近地生成的颗粒,堆积期间又经过明显的水流作用。张夏黄土、古土壤的堆积、发育与晚更新世气候变化相吻合,同时又受到当地微地貌的影响,缺失黑垆土和全新世堆积。张夏、淄博均在山东省中部,其黄土成分较细,使山东黄土在宏观上没有规律可循,更加显示出黄土的复杂多样。Loess layers with different thicknesses are piled up widely on terraces of the Dasha River and piedmont zones. According to a study of the Zhangxia loess section, the author thinks that the materials of the loess have complex sources, comprising not only materials transported by west wind drifts and northwest and Laizhou Bay air currents but also local materials. During their accumulation, they were subjected to the action of water. The accumulation and development of the Zhangxia loess and paleosol accorded with the late Pleistocene climatic change and were also influenced by local microrelief, with black loam and Holocene deposits being absent. Zhangxia and Zibo are located in the central part of Shandong, where loess is finer in grain size, so loess in Shandong has no regularity to follow on the whole, which more evidently shows that the loess is complex and variable.

关 键 词：黄土 堆积 微地貌 物质来源 晚更新世 古土壤 全新世 组成特征 黑垆土 发育 

分 类 号：P534.63[天文地球—第四纪地质学]