龙山文化末期泾河特大洪水事件光释光测年研究

被引：30

作者：

葛本伟 ^{[1
]}

黄春长 ^{[1
,2
]}

周亚利 ^{[1
]}

庞奖励 ^{[1
]}

查小春 ^{[1
]}

机构：

[1] 陕西师范大学旅游与环境学院

[2] 中国科学院黄土与第四纪地质国家重点实验室

来源：

第四纪研究 | 2010年 / 30卷 / 02期

关键词：

龙山文化; 古洪水; 光释光测年; 全新世; 泾河;

D O I：

暂无

中图分类号：

P331.1 [洪水调查];

学科分类号：

摘要：

通过对泾河流域深入的野外考察,在其中游基岩峡谷内发现了含有龙山文化末期文化层和古洪水滞流沉积单元的全新世黄土土壤剖面。利用光释光的单片测年技术,确定古洪水滞流沉积层覆盖着的黑垆土层的OSL年龄为4078±382aB.P.和4111±450aB.P.。结合其中所含龙山文化遗址的考古年代,揭示出泾河流域在4100～4000aB.P.之间出现一个古洪水多发时期。这组古洪水滞流沉积单元包含5个单层,记录了4100～4000aB.P.之间泾河流域曾经发生的5次特大古洪水事件。这个洪水期对应着我国北方在4000aB.P.前后,由全新世大暖期向着全新世晚期干旱期转折过程中的气候剧烈变化。这些史前洪水事件可能对我国龙山文化的衰落和古代华夏文明的诞生具有重大的影响。

引用

页码：422 / 429

页数：8

共 36 条

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