Rare earth element (REE) concentrations and radiogenic isotopes (Sr-Nd-Hf) retrieved from bulk sediment leachates, and bulk and clay mineralogical signatures from two piston cores recovered in the Canadian Beaufort and Chukchi-Alaskan margins@en

Rare earth element (REE) concentrations and radiogenic isotopes (Sr-Nd-Hf) retrieved from bulk sediment leachates, together with bulk and clay mineralogical signatures, were studied on two piston cores recovered in the Canadian Beaufort (AMD0214-02PC) and Chukchi-Alaskan (HLY0501-01JPC) margins to investigate changes in the weathering regimes and deep-water circulation during the Holocene.本研究针对采自加拿大波弗特海（AMD0214-02PC）与楚科奇-阿拉斯加大陆边缘（HLY0501-01JPC）的两根活塞岩心展开分析，测定了其中全沉积物浸提液的稀土元素（Rare earth element, REE）浓度与Sr-Nd-Hf放射性同位素组成，同时获取了全岩及黏土矿物学特征，以此探究全新世时期的风化模式与深水环流演化过程。