摘要
中国北方的晚更新统,以黄河中游地区最典型,主要是两套堆积——风成马兰黄土和河湖相粘土与砂砾石堆积。根据年代学、孢粉学和沉积相的分析,晚更新世河湖相堆积分属不同发育阶段,萨拉乌苏动物群所在层位似乎应与δ^(18)O地层的第6阶段对比,其他地点含晚更新世动物化石的堆积可与韦克塞尔冰期对比。马兰黄土底界或第1古土壤层的发育是穿时的。风积黄土与河湖相地层是发育在不同地貌单元的同时异相堆积。
The Late Pleistocene deposits of North China are best developed in the middle reaches of the Yellow River. Two sedimentary units are distinguished, which consist of aeolian loess and fluvo-lacustrine sands and gravels, respectively. Chronology, polynology, and analysis of sedimentary facies show that the Late Pleistocene fluvo-lacustrine deposits can be subdivided into different stages. The stratigraphic level containing Salawusu fauna may be compared with stage 6 with respect to δ18O and the deposits developed in other locations with Weichse-lian glaciation. The bottom boundary of Malan loess or the development of the first paleosol is chronologically different from place to place. The Late Pleistocene aeolian loess and flu-vo-lacustrine strata are synchronous deposits with different sedimentary facies and deposited in different morphologic units.
出处
《地球化学》
CAS
CSCD
北大核心
1989年第4期343-351,共9页
Geochimica
基金
中国科学院科学基金
