DOGAMI Geologic Map Series

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GMS-121, Geologic map of the Devine Ridge North 7.5' quadrangle, Harney County, Oregon, by Robert A. Houston, Jason D. McClaughry, Carlie J. M. Duda, and Clark A. Niewendorp; 110 p. report; 34- x 45-inch map plate, scale 1:24,000; Esri format geodatabase; shapefiles, metadata; spreadsheet (5 sheets).

Report Downloads:

INTRODUCTION [from the report]
The Oregon Department of Geology and Mineral Industries (DOGAMI) mapped the geology of the Devine Ridge North 7.5' quadrangle, Harney County, Oregon, during 2017 and 2018. This mapping is part of a multi-year geologic study of the Harney Basin, designated a high priority by the Oregon Geologic Mapping Advisory Committee (OGMAC; Figure 1-1; Plate 1). Key objectives of this project are: 1) provide an updated and spatially accurate geologic framework for the Devine Ridge North 7.5' quadrangle; 2) correlate lithologic units to surrounding areas; 3) improve the understanding of the structural and lithologic controls on groundwater aquifers; and 4) describe the occurrence of geologic resources (aggregate, industrial, mineral, and energy) and geologic hazards within the quadrangle. This study was supported in part by a grant from the STATEMAP component of the National Cooperative Geologic Mapping Program (G17AC00210). Additional funds were provided by the State of Oregon.

The core products of this study are this report, an accompanying geologic map and cross sections, and an Esri™ ArcGIS™ ArcMap™ geodatabase. The geodatabase presents new geologic mapping in a digital format, consistent with the U.S. Geological Survey (USGS) National Cooperative Geologic Mapping Program 2009 draft standard format for digital publication of geologic maps, version 1.1 (NCGMP, 2010). It contains spatial information about geologic polygons, contacts, and structures, and basic data about each geologic unit such as age, lithology, mineralogy, and structure. The geologic map and cross sections, showing the distribution of bedrock lithology, critical structural relationships, and surficial geology, are at a scale of 1:24,000 (Plate 1).

GEOGRAPHIC INFORMATION SYSTEM (GIS) DATA
Geodatabase is Esri® version 10.1 format.
Metadata is embedded in the geodatabase and in the shapefiles and is also provided as separate .xml formatted files.

DRN2018_NCGMP09_v10.1.gdb (geodatabase only, with embedded metadata; 5.3 MB, zip file)
Feature dataset classes
Name Description Metadata
bundle (zip)
Bedding This feature class represents point locations in the quadrangle where bedding measurements were made or were compiled from previous studies. These data are also contained in the bedding (strike and dip) spreadsheet. .xml
CartographicLines Vector lines that have no real-world physical existence and do not participate in map-unit topology. The feature class includes cross section lines used for cartography for the quadrangle. .xml
ContactsAndFaults The vector lines in this feature class contains geologic content including contacts and fault locations used to create the map unit polygon boundaries. The existence and location confidence values for the contacts and faults are provided in the feature class attribute table. .xml
DataSourcePolys This feature class contains polygons that delineate data sources for all parts of the geologic map. These sources may be a previously published map, new mapping, or mapping with a certain technique. For a map with one data source, for example all new mapping, this feature class contains one polygon that encompasses the map area. .xml
Geochemistry This feature class represents point locations where whole-rock samples have been analyzed by X-ray fluorescence (XRF) techniques in the quadrangle. Includes data collected by the authors during this study or compiled from previous studies. These data are also contained in the geochemistry spreadsheet. .xml
Geochronology This feature class represents point locations where 40Ar/39Ar isotopic ages have been obtained for rock samples in the quadrangle. Data collected by the authors during the course of this study. These data are also contained in the geochronology spreadsheet, .xml
GeochronPoints This feature class represents point locations where 40Ar/39Ar isotopic ages have been obtained for rock samples in the quadrangle. Complete analytical data are shown in the analysis-specific table Geochronology. .xml
GeologicLines These vector lines represent known fold axis locations in the quadrangle. The existence and location confidence for the fold axes are provided in the feature class attribute table. .xml
Magnetics This feature class represents point locations where measurements of natural remanent magnetization have been obtained for strongly magnetized lavas in the quadrangle. Includes data collected by the authors during the course of this study. These data are also contained in the magnetic polarity spreadsheet. .xml
MapUnitPoints This feature class represents points used to generate the MapUnitPolys feature class from the ContactsAndFaults feature class. .xml
MapUnitPolys  This polygon feature class represents the geologic map units as defined by the authors. .xml
OrientationPoints This feature class represents point locations in the quadrangle where bedding measurements were made or were compiled from previous studies. These data are also contained in the bedding (strike and dip) spreadsheet. .xml
OtherPolys This polygon feature class represents the geologic map units as defined by the authors. .xml
WaterWells This feature class represents point locations of water wells in the quadrangle. Includes data obtained by the authors from the Oregon Department of Water Resources (OWRD). These data are also contained in the WaterWells spreadsheet. .xml
Tables
DataSources Data table that contains information about data sources used to compile the geology of the area. .xml
DescriptionOfMapUnits Data table that captures the content of the Description of Map Units (DMU), or equivalent List of Map Units and associated pamphlet text, included in a geologic map. .xml
Glossary Data table that contains information about the definitions of terms used in the geodatabase. .xml
 

SHAPEFILES (GIS shapefiles only bundle, with embedded metadata; 130 KB, zip file)

DRN2018_Bedding.shp
DRN2018_Geochemistry.shp
DRN2018_Geochronology.shp
DRN2018_Magnetics.shp
DRN2018_RefMap.shp
DRN2018_WaterWells.shp
DRN2018_XSectionLines.shp


MAP PLATE (georeferenced PDF, 34 x 45 inches, 8 MB)

Plate 1. Geologic map of the Devine Ridge North 7.5' quadrangle, Harney County, Oregon, scale 1:24,000

Note: The map plate PDF is in geospatial PDF format, allowing you to turn on and off layers in the map frame and to find geographic coordinates in the PDF if you have the free plugin for Adobe Reader. Learn more about the geospatial PDFs here.

GMS-121 map plate layers

image of Devine Ridge North geologic quadrangle map