Large Format Map Points

Oregon Department of Geology and Mineral Industries 2020 Large Format Map Points vector digital data Oregon Department of Geology and Mineral Industries Digital Data MILO-Release 3 Portland, Oregon, USA Oregon Department of Geology and Mineral Industries http://www.oregongeology.org Oregon Department of Geology and Mineral Industries 2020 Mineral Information Layer for Oregon-Release 3 Release 3 vector digital data Oregon Department of Geology and Mineral Industries Digital Data MILO-Release 3 Portland, Oregon, USA Oregon Department of Geology and Mineral Industries http://www.oregongeology.org/ Large Format Map Points are scans of the literature originally found in DOGAMI published and unpublished hardcopy holdings in the Portland and Grants Pass offices. Hardcopy was scanned and saved in .tiff format. Tiffs were then converted to PDFs. Understand that recreation in or around inactive mine sites is extremely dangerous, and can result in serious injury or death. Stay out and stay alive! Large Format Map Points is intended for use as reference material. This data set represents the documents that have not been referenced to specific MILO point(s). 2020 Complete As needed -124.606676 -116.751962 45.878802 42.027008 ISO 19115 Topic Category geoscientificinformation Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus stone metallic mineral industrial mineral mineral resource zeolite sand and gravel MILO (Mineral Information Layer for Oregon) Mine Mineral fuel Aggregate Gemstone Borrow Pit Prospect Quarry Gravel Pit Mineral Occurrence Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus North America United States of America Oregon Baker Benton Clackamas Clatsop Columbia Coos Crook Curry Deschutes Douglas Gilliam Grant Harney Hood River Jackson Jefferson Josephine Klamath Lake Lane Lincoln Linn Malheur Marion Morrow Multnomah Polk Sherman Tillamook Umatilla Union Wallowa Wasco Washington Wheeler Yamhill Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus None REPORT DATA: This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. See the accompanying text report for more details on the limitations of the methods and data used to prepare this publication. Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965

Portland Oregon 97232 USA 1 971 673 1555 1 971 673 1562 dogami-info@oregon.gov When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org Jason D. McClaughry Oregon Department of Geology and Mineral Industries Eastern Oregon Regional Geologist jpeg image (.jpg) The Mineral Information Layer of Oregon Release 3 (MILO Release-3) is a large database developed over several decades by DOGAMIs researchers and reporters. Funding for the compilation of MILO Release-3 during 2018 to 2020 was provided by the U.S. Geological Survey (USGS) National Geological and Geophysical Data Preservation Program (NGGDPP) under assistance award G18AP00102. Unclassified Attribute accuracy is tested by manual comparison of the source and hard copy plots. The detail level (e.g. location information) of the source material and interpretation procedures for capturing that source affect the quality of the data. Fields that do not contain applicable attributes were left blank. Field checking of the data was not performed. Some documents are duplicated due to varying degrees in quality of scans, but each scan has its own individual feature. However no duplicated features exist although individual point features may overlap and share the same coordinates but have differences in attribute(s). Because the data were collected and reported by numerous people, the descriptions provided are not highly consistent in structure or terminology or similar characteristics may be described differently. Attribution of the database is generally sparse, meaning that not all fields are attributed. These data are scans of the literature originally found in DOGAMI published and unpublished hardcopy holdings in the Portland and Grants Pass offices, some documents may not have been included. The spatial data are presented in the form of points representing the approximate centroid of the map. For additional maps outside the State of Oregon please contact the Oregon Department of Geology and Mineral Industries at dogami-info@oregon.gov For large format map scans, the positional quality of each varies widely or is entirely unknown especially where their location information was obtained from older published and unpublished sources. For example, in older sources location information is often reported in a narrative format and are accurate within a mile and most to within a quarter mile. Those in newer publications are usually reported by subdivisions of a section of land (Public Land Survey System or PLS) or by latitude and longitude, and consequently, are probably accurate within a quarter of a mile, and most within an eighth of a mile. The digitizing method for locating the approximate centroid point locations involved heads-up digitization of various scale maps on the computer screen by using a computer mouse to scribe the feature. No steps were taken to check the point features positional accuracy. The accuracy of this data depends on a number of different types of errors: geodetic, machine, cartographic, and random errors. Not least of which depends on the level of detail included in the source material and the interpretation procedures for capturing that source. Therefor accuracy of this data is at best no more than 30 to 40 ft. Vertical accuracy is impacted by the accuracy of the data source and the methods used to locate each map. Therefor the elevation accuracy cannot be quantified. Oregon Department of Geology and Mineral Industries 2014 Large-Format Mine Maps - Interactive Map vector digital data Portland, Oregon Oregon Department of Geology and Mineral Industries Grey literature. Scanning of documents done by National Mine Map Repository (NMMR) at the Office of Surface Mining Reclamation and Enforcement, 3 Parkway Center, Pittsburgh, PA 15220 https://www.oregongeology.org/milo/map-minemaps.htm 10/28/2019 Updated DOGAMI replaced ESRIs GIS shapefile with ESRIs GIS feature class. This necessitated a conversion, in which the earlier version of MILO-Release 2 was converted from a ESRIs .shp (shapefile) file format to ESRIs .gdb (file geodatabase) file format by using ESRIs (Version 10.7) Load Data function. DOGAMI updated the Large Format Map Points file structure to adhere to the Geologic Map Schema (GeMS), designed by the U.S. Geological Survey. The schema can be found here (https://ngmdb.usgs.gov/Info/standards/GeMS/). Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965