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本文根据沉积环境特征的研究和14C年代的测定表明,本区近3万年来的岩层,可划分为五个层段。主要是河流或河流泛滥相沉积。全新世底界为6m。历史上白洋淀多次变化,人类活动是影响变化的主导因素。
Abstract：Based on studies of lithology, spatial distribution of lithofacies, grains micropalaeontology, superficial structure of quartz particles, pollen analysis and 14C dating data from drill holes, the palaeoenvironment of Baiyangdian area since 30,000 a. B. P., was made clear: sediments were mainly fluvial or pluvial, and a little lacustrine. Subsand sediments best developed, clay and subclay sediments were mostly interbedded with subsa'nd, and silty subclay sediments were rather unstable in distribution. The thickness of Holocene deposit was about 6m. Morden lacustrine sediment is distributed on the surface of the land. Human activities have played a leading role in the environment changes in the Baiyangdian area.
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基本信息:
DOI：10.16562/j.cnki.0256-1492.1992.02.010
引用信息:
[1]何乃华,朱宣清.白洋淀地区近3万年来的古环境与历史上人类活动的影响[J].海洋地质与第四纪地质,1992(02):79-88.DOI:10.16562/j.cnki.0256-1492.1992.02.010.
基金信息:
国家自然科学基金资助项目