D-01, Surficial Geology of Minnesota

Overview This feature service provides a detailed dataset compiling new and previously published geologic mapping to represent the surficial sediments across Minnesota. It focuses on the texture and genesis of these sediments, offering a comprehensive view of the state's Quaternary geology. Feature Layers Surficial Geology: This layer depicts surficial sediments categorized by texture rather than provenance, using color-coded map units such as green for diamicton interpreted as till, red/orange for sand and gravel-dominated sediments, and blue for silt and clay. It incorporates glacial sediments mapped with lithostratigraphic formation names and identifies post-glacial and proglacial sediments by genesis. The dataset also includes peat and modern lake sediments, representing the most recent and detailed surficial geology data available for Minnesota. Geographic Coverage The data covers the entire state of Minnesota, supporting geological and environmental studies throughout the region. Use Cases Geological mapping and research focused on glacial and post-glacial sediment distribution. Water resource management Environmental assessments and land-use planning requiring detailed surface sediment information. Infrastructure development and natural resource management benefiting from understanding sediment textures and deposit types. Additional Information This dataset is curated and provided by the Minnesota Geological Survey, with licensing encouraging appropriate citation to credit the source. The service supports GIS applications that require detailed, reliable surficial geological information for analysis and decision-making. Minnesota Surficial Geology Application View Minnesota Surficial Geology Database Download## 概览 本要素服务整合全新及已发表的地质填图成果，构建出用以表征明尼苏达州全境表层沉积物的详细数据集。该数据集聚焦于沉积物的粒度特征与成因机制，全面展现该州第四纪（Quaternary）地质全貌。 ## 要素图层 ### 表层地质图层 该图层按粒度特征而非物源对表层沉积物进行分类，采用色彩编码的制图单元：绿色代表解译为冰碛物的混杂堆积物（diamicton），红/橙色代表以砂和砾石为主的沉积物，蓝色代表粉砂与黏土。其整合了以岩石地层组名称标注的冰川沉积物，并依据成因机制区分冰期后与冰前沉积物。本数据集还涵盖泥炭与现代湖泊沉积物，是明尼苏达州目前可获取的最新、最详尽的表层地质数据。 ## 地理覆盖范围 本数据覆盖明尼苏达州全域，可为该区域内的地质与环境相关研究提供支撑。 ## 应用场景 1. 聚焦冰川及冰期后沉积物分布的地质填图与研究工作 2. 水资源管理 3. 需依托详尽表层沉积物信息开展的环境评估与土地利用规划 4. 需掌握沉积物粒度特征与沉积类型以支撑决策的基础设施建设与自然资源管理工作 ## 补充信息 本数据集由明尼苏达州地质调查局整理并发布，授权条款鼓励使用者进行恰当引用以注明数据源。本服务可支持各类需要详尽可靠表层地质信息以开展分析与决策的地理信息系统（GIS, Geographic Information System）应用。 明尼苏达州表层地质应用视图 明尼苏达州表层地质数据库 下载