地质科技情报2011，Vol.30Issue(1)：47-50,4.
江汉盆地周老孔0～108m沉积物的稀土元素特征及其物源判别
Geochemistry of REE and Provenance of Sediments from 0-108 m Zhoulao Borehole in Jianghan Plain
摘要
Abstract
This paper analyses REE content in sediments from Zhoulao borehole in sedimentation center of Jianghan Plain. The results indicate that the REE content, gross amount of REE, the ratio about ∑Ce/∑Y, Ce anomaly and Eu anomaly above 108 m sediments in Zhoulao borehole is no changing and close to that in modern Yangtze sediments. These indexes also demonstrate that the provenance of Jianghan Plain sediments is the same as the modern Yangtze sediments, the rocks in upper Yangtze drainage. In the discrimination diagram of REE characteristic parameters, the REE characteristic in Jianghan Plain sediments is similar to that in Jinshajiang and Jialingjiang drainage sediments. Therefore, the main provenance of Jianghan Plain sediments above 108 m is Jinshajiang and Jialingjiang drainage. Moreover, the modern Yangtze is formed before 1Ma because geochemical characteristics of REE of Yangtze sediments basically have no change since 1 Ma ago.关键词
长江/沉积物/稀土元素/物源判别Key words
Yangtze River/ sediment/ REE/ provenance分类
天文与地球科学引用本文复制引用
刘引迪,李长安,袁胜元..江汉盆地周老孔0～108m沉积物的稀土元素特征及其物源判别[J].地质科技情报,2011,30(1):47-50,4.基金项目
国家自然科学基金项目(40971008 （）
40771213) （）
黄土与第四纪地质国家重点实验室开放基金项目(SKLLQG0908) （SKLLQG0908）
