D-02, Minnesota Bedrock Outcrop Database

Overview This feature service provides a comprehensive geological dataset focused on bedrock outcrops within the state of Minnesota. Compiled and distributed by the Minnesota Geological Survey, the dataset features over 200,000 polygons representing locations where bedrock is exposed at or near the land surface. The data reflects the detailed geological characteristics of these outcrops, including rock types and descriptions. Feature Layer Minnesota Bedrock Outcrop : This primary layer captures extensive bedrock outcrop information across Minnesota. Each polygon is attributed with detailed rock classification, including multiple rock names based on an extensive coded value domain that covers both volcanic and non-volcanic rock types. Additional attributes include descriptions from geological field stations, geologist collaborators, sampling information, photographic records, and mapping references. The dataset captures subtle geological variations by allowing multiple, overlapping polygons with differing descriptions to represent historical mapping nuances. Geographic Coverage This dataset is specific to Minnesota, providing complete statewide coverage of bedrock outcrop locations as documented by the Minnesota Geological Survey. Use Cases Geological mapping and research focused on bedrock exposures Environmental and land use planning requiring knowledge of bedrock composition and distribution Educational and academic studies related to Minnesota's geology Resource exploration and assessment based on rock type data Licensing and Attribution There are no restrictions on the use of this data; users are encouraged to reference the Minnesota Geological Survey when utilizing this information. Minnesota Outcrop Database Download概述 本要素服务（feature service）提供一套聚焦美国明尼苏达州基岩露头的综合地质数据集。该数据集由明尼苏达地质调查局（Minnesota Geological Survey）编制并发布，包含超过20万个多边形要素，用以表征基岩裸露或近地表出露的点位。数据涵盖此类露头的详细地质特征，包括岩石类型与岩性描述。 要素图层 明尼苏达基岩露头（Minnesota Bedrock Outcrop）：作为核心图层，该图层收录了明尼苏达州全域范围内的基岩露头信息。每个多边形要素均附带详细的岩石分类属性，其基于覆盖火山岩与非火山岩类别的完整编码值域（coded value domain），包含多种岩石名称。额外属性还包括地质野外台站记录、合作地质学者的成果、采样信息、影像记录与制图参考文献。本数据集支持创建多个描述各异的重叠多边形，以体现历史制图中的细微差异，从而捕捉精细的地质变化。 地理覆盖范围 本数据集仅限明尼苏达州境内，完整覆盖该州由明尼苏达地质调查局记录的全部基岩露头点位。 应用场景 1. 针对基岩裸露区的地质制图与相关研究 2. 需掌握基岩组成与分布信息的环境规划与土地利用规划 3. 与明尼苏达州地质相关的教育与学术研究 4. 基于岩石类型数据开展的资源勘探与评价 授权与引用说明 本数据集无使用限制，鼓励使用者在引用该信息时标注明尼苏达地质调查局。 明尼苏达露头数据库下载