SR-XRF elemental record from varved sediments of Lake Sihailongwan, NE China (2007–761 CE)

This dataset contains high-resolution elemental concentration data obtained by synchrotron radiation X‑ray fluorescence (SR‑XRF) core scanning of varved sediments from Lake Sihailongwan (NE China). The dataset includes continuous geochemical profiles for five elements (Br, Rb, Sr, Y, Zr) measured in parts per million (ppm) with sub‑annual resolution over the period 761–2007 CE.本数据集包含采用同步辐射X射线荧光（synchrotron radiation X‑ray fluorescence, SR‑XRF）岩芯扫描技术获取的中国东北四海龙湾湖纹层沉积物的高分辨率元素浓度数据。该数据集涵盖公元761年至2007年时段内，以百万分比（ppm）为测定单位、具备亚年分辨率的5种元素（Br、Rb、Sr、Y、Zr）的连续地球化学剖面。