Traces of geologic and hydrogeologic cross sections used to develop the hydrogeologic framework model of the Death Valley regional ground-water flow system, Nevada and California

This digital dataset defines the traces of geologic and hydrogeologic cross sections that were used in the construction of a digital three-dimensional (3D) hydrogeologic framework model (HFM) of the Death Valley regional ground-water flow system (DVRFS). The HFM represents the geometry and extent of hydrogeologic units and major structures in an approximately 45,000 square-kilometer region of southern Nevada and California. The HFM was constructed from digital elevation models, geologic maps, borehole information, geologic and hydrogeologic cross sections, and other 3D models to represent the geometry of the hydrogeologic units. Cross sections from five sources were used as input to the HFM: (1) 28 sections of the DVRFS region, (2) six sections of southern Nevada and eastern California, (3) 22 sections from a hydrogeologic framework model of the Nevada Test Site region, (4) four sections of the Yucca Mountain area, and (5) three sections of the southern part of Yucca Mountain and the northern part of Amargosa Desert (Faunt and others, 2004, Chapter E, pages 176-179). The HFM represents principal aquifers and confining units and is an integral component of the DVRFS transient ground-water flow model. The DVRFS HFM and transient ground-water flow models are the most recent in a number of regional-scale models developed by the U.S. Geological Survey (USGS) for the U.S. Department of Energy (DOE) to support investigations at the Nevada Test Site (NTS) and at Yucca Mountain, Nevada (see "Larger Work Citation", Chapter A, page 8).本数字数据集定义了用于构建死亡谷区域地下水流系统（Death Valley regional ground-water flow system, DVRFS）三维（3D）水文地质框架模型（hydrogeologic framework model, HFM）的地质与水文地质剖面数字化迹线。该HFM刻画了内华达州南部与加利福尼亚州约45000平方千米区域内的水文地质单元及主要构造的几何形态与分布范围。本HFM依托数字高程模型、地质图、钻孔资料、地质与水文地质剖面及其他三维模型构建而成，用以表征水文地质单元的几何形态。本次HFM构建共使用5类来源的剖面作为输入数据：① 死亡谷区域地下水流系统范围内的28条剖面；② 内华达州南部与加利福尼亚州东部的6条剖面；③ 内华达试验场区域水文地质框架模型中的22条剖面；④ 尤卡山区域的4条剖面；⑤ 尤卡山南部与阿马戈萨沙漠北部的3条剖面（Faunt等人，2004年，E章，第176-179页）。该HFM表征了主要含水层与隔水层的分布特征，是DVRFS瞬态地下水流模型的核心组成部分。本次DVRFS的HFM与瞬态地下水流模型，是美国地质调查局（U.S. Geological Survey, USGS）为美国能源部（U.S. Department of Energy, DOE）支持内华达试验场（Nevada Test Site, NTS）及内华达州尤卡山相关调查工作所开发的一系列区域尺度模型中的最新成果（详见"Larger Work Citation"，A章，第8页）。