胶州湾李村河口沉积物稀土元素地球化学特征

GEOCHEMICAL FEATURES OF REE IN THE SEDIMENT OF LICUN RIVER ESTUARY IN JIAOZHOU BAY

在胶州湾李村河口钻取两个柱状沉积物样,分层进行REE含量测定。本区沉积物REE分布模式为右倾,富集轻稀土,具中等Eu负异常,与东海、黄海等近海陆源沉积物相似。同时与崂山花岗岩REE配分特征十分相近。因此,李村河口沉积物REE地球化学特征主要是源区物质崂山花岗岩稀土配分特征的继承与发展,基本未受人类活动的影响。

Two sediment cores were collected from the Licun River Estuary, the REE contents were analyzed by layers, result shows that the REE distribution pattern is rightdipping and rich in light REE but with negative Eu anomaly. This is similar to the REE characteristics of continental sediments such as the East Sea and the Yellow Sea sediments. It has almost the same feature of that of Laoshan granites. All these show that the REE in Licun River Estuary sediment is an inheritance of the REE of the source rock from Laoshan granites, and there is no mark of anthropogenic influence.