Quartz-feldspar-lithic (QFL), and feldspar composition from the Cenozoic deposits of Weihe Basin, central China

The Quartz-feldspar-lithic (QFL), and feldspar composition data in the sediments can provide valuable information on the provenance and the weathering intensity of the sediments. Traditionally, the QFL composition is identified under binocular microscope. In this dataset, all data were obtained by a novel method of Quantitative Evaluation of Minerals by Scanning Electron Microscopy (QEMSCAN). We applied this methods on a nearly continuous Cenozoic deposits of the Weihe Basin, Central China, which can provide information about the history of weathering intensity over the past 46 Ma.
Two tables of data are included. Table 1 is the Quartz-feldspar-lithic (QFL) data determined by QEMSCAN method. The grain counts of monocrystal and coarse grained k-feldspar, plagioclase, albite and quartz, carbonate, the number of all particles, and the calculated quartz-feldspar-lithic composition of all samples are shown. The sources and formations of the samples are also labeled. Table 2 is the number of grains of albite, K-feldspar, Ca-plagioclase and the ratios of Ca-plagioclase/all feldspar (Ca%), albite / K-feldspar (Na/K-feldspar), and Ca-plagioclase/albite (Ca/Na-feldspar) of all samples in this study are shown. The sources and formations of the samples are also labeled.

石英-长石-岩屑（QFL）组成数据，以及长石成分在沉积物中的含量，能够为沉积物的源区和风化强度提供宝贵信息。传统上，QFL成分的识别是在双目显微镜下进行的。在本数据集中，所有数据均通过扫描电子显微镜（Scanning Electron Microscopy, SEM）的定量矿物评价方法（Quantitative Evaluation of Minerals by Scanning Electron Microscopy, QEMSCAN）获得。我们运用此方法对位于中国中部、渭河流域的几乎连续分布的新生代沉积物进行研究，该研究可揭示过去4600万年间风化强度的历史变迁。数据集包含两张表格。表1展示了由QEMSCAN方法确定的石英-长石-岩屑（QFL）数据，包括单晶和粗晶斜长石、钙长石、钠长石和石英的颗粒计数、所有颗粒的总数以及所有样品的石英-长石-岩屑成分计算值。样品的来源和形成也被标注。表2显示了本研究中所有样品中钠长石、钾长石、钙质斜长石颗粒的数量，以及钙质斜长石与所有长石的比率（Ca%）、钠长石与钾长石的比率（Na/K-长石）、钙质斜长石与钠长石的比率（Ca/Na-长石）。样品的来源和形成也被标注。