Geophysical borehole logging data of wells ER-GLS1, ER-GUM1, ER-PLM7, and ER-PLM8 at the East River Watershed, Colorado

The purpose of this data set is to provide a means of characterizing the bedrock variability both within a single borehole location and across the East River Watershed. The East River is part of the Watershed Function Scientific Focus Area (WFSFA) located in the Upper Colorado River Basin, United States, and all boreholes are located within Mancos shale bedrock. The data set contains geophysical borehole logging data acquired in October 2018 in boreholes ER-GUM1 (East River- Gothic Upper Montane Borehole #1) and ER-GLS1 (East River- Gothic Lower Subalpine Borehole #1), and acquired in October 2019 in boreholes ER-PLM7 (East River- Pumphouse Lower Montane Borehole #7) and ER-PLM8 (East River- Pumphouse Lower Montane Borehole #8). It contains depth, natural gamma ray emission, spectral gamma ray emission(Th, K, U), magnetic susceptibility, fluid temperature and electrical conductivity, electromagnetic (EM) induction derived rock electrical resistivity, heat pulse and spinner flow measurements to estimate groundwater flow, and Nuclear Magnetic Resonance (NMR) derived water content and hydraulic conductivity. Data for each borehole are provided as comma delimited text files. For each borehole accurate location information is provided (based on RTK GPS (Real Time Kinematic Global Positioning System) surveying). Borehole logging data were acquired using Mount Sopris borehole tools, and Vista Clara Javelin for NMR data.

本数据集旨在提供表征单钻孔点位内以及东河流域（East River Watershed）范围内基岩变化特征的方法。东河是位于美国科罗拉多河上游流域的流域功能科学重点区域（Watershed Function Scientific Focus Area, WFSFA）的组成部分，所有钻孔均布设于曼科斯页岩（Mancos shale）基岩地层中。本数据集包含2018年10月在ER-GUM1（东河-哥特高地山地钻孔1号，East River- Gothic Upper Montane Borehole #1）与ER-GLS1（东河-哥特低地亚高山钻孔1号，East River- Gothic Lower Subalpine Borehole #1）中采集的地球物理钻孔测井数据，以及2019年10月在ER-PLM7（东河-泵房低山地钻孔7号，East River- Pumphouse Lower Montane Borehole #7）与ER-PLM8（东河-泵房低山地钻孔8号，East River- Pumphouse Lower Montane Borehole #8）中采集的对应数据。数据涵盖深度、自然伽马射线发射强度、能谱伽马射线发射强度（钍、钾、铀）、磁化率、流体温度与电导率、电磁感应法获取的岩石电阻率、用于估算地下水流量的热脉冲与旋转流量计流量测量数据，以及核磁共振（Nuclear Magnetic Resonance, NMR）获取的含水量与导水率。各钻孔的数据以逗号分隔文本文件形式提供，且每个钻孔均配有基于RTK GPS（实时动态全球定位系统，Real Time Kinematic Global Positioning System）测量得到的精确位置信息。钻孔测井数据采用Mount Sopris钻孔测井仪采集，核磁共振数据则通过Vista Clara Javelin设备获取。