The Baker City Field Office was established in 1937, along with Portland and Grants Pass offices, when the Oregon State Legislature created the Oregon Department of Geology and Mineral Industries (DOGAMI). The office is currently staffed by Jason D. McClaughry, Eastern Oregon Regional Geologist.
The Baker City Field Office is dedicated to public education and multipurpose geologic mapping. Our goals include the recognition of geologic hazards, characterization of the distribution of surface and subsurface water resources, and recognition of potential mineral resources. These goals are reached through detailed geologic mapping (1:24,000 scale), lithologic description, geochemical and petrographic analyses, study of subsurface well log data, and GIS spatial analysis of multiple data layers. These techniques enable DOGAMI to effectively analyze and archive geologic data, to produce user-friendly graphics, and to serve the broad interests of the public by providing a cost-effective source of geologic information.
Jason McClaughry, Eastern Oregon Regional Geologist, has been with the Baker City Field Office since 2004 and has a B.S. degree from the University of Puget Sound, Tacoma, Washington, and M.S. degree from Washington State University, Pullman. Jason's expertise and interests are in volcanic stratigraphy and sedimentology, and the application of GIS to geologic mapping and spatial analysis. The use of high-resolution lidar is also now routinely incorporated into mapping projects. Since joining DOGAMI, Jason has completed a number of large-scale statewide mapping projects in the Lower Crooked Basin of central Oregon, the southern Willamette Valley, and the Medford area of southwest Oregon. Jason is currently the project lead for geologic mapping in the Hood River area and is mentoring several Graduate student research projects in northeast Oregon.
Geologic mapping projects in DOGAMI are funded by the STATEMAP component of the National Cooperative Geologic Mapping Program (http://ncgmp.usgs.gov/ncgmpabout/statemap). The primary objective of the STATEMAP program is to establish the geologic framework of areas that are vital to the welfare of individual States. Each State Geologist determines the State's mapping priorities in consultation with a State Mapping Advisory Committee. In Oregon, priorities are determined by the Oregon Geologic Mapping Advisory Committee (OGMAC). At the June 14th 2011 meeting the committee determined future mapping priorities along the southwest Oregon Coast and in the middle Willamette Valley. Priorities are based on State requirements for geologic map information in areas of multiple-issue need or compelling single-issue need and in areas where mapping is required to solve critical earth science problems. Each STATEMAP project focuses on a specific area or issue. A pdf information sheet providing information about STATEMAP funded mapping in Oregon through 2011 can be downloaded and viewed at http://ncgmp.usgs.gov/about/STATEMAP/fact_sheet_map.html. Current or recently completed projects are described below.
Hood River –
During 2011 and 2012 USGS STATEMAP Funded geologic mapping will focus on the Hood River Valley, on the northern flank of Mt. Hood. Mapping will occur in the Dee, Parkdale, Ketchum Reservoir, Hood River, and White Salmon 7.5' quadrangles. The focus of the study is to generate high-resolution geologic maps and supporting data to address a variety of issues in the Hood River area. Communities in the area may be impacted by many geologic hazards including landslides and debris flows, and volcanic eruptions. The area may be situated on active faults and at risk from earthquakes. Ground water resources are increasingly limited in the area curtailed by local geologic conditions and continued population growth, which is pushing development into the hill country surrounding established urban areas. As with many other areas in Oregon, there is also a need to enhance the tourism-based economy of the area through mineral and aggregate development. Completion of this project will provide the region with the most detailed digital geologic maps and coordinated geodatabases available, providing local governments and state agencies with the tools to more effectively manage their future.
Mt. Hood near Timberline Lodge.
Recently Completed Projects
2010-2011 - Geologic mapping in the Bear Creek Valley, Ashland and Medford
The map and database for Bear Creek Valley, Jackson County, Oregon were prepared to provide a spatially accurate and detailed geologic database that compiles existing map data in a digital format. This geologic database refines our understanding of the geologic conditions that control the distribution, quantity, and quality of groundwater resources and the distribution of terrain susceptible to landslides. The database will help with assessment of regional seismic hazards and delineation of potential hydrocarbon, aggregate, and other mineral resources. The database also serves as a basis for future geologic, geohydrologic, and geohazard studies in Bear Creek Valley. The primary product of this publication is an Esri ArcGIS™ ArcMap™ 10 format geodatabase that contains detailed information on the geology of the region. The publication also includes this report describing the geology of the study area, a 1:63,360-scale thematic geologic map, and digital databases containing geochemical analyses and isotopic ages. The report and accompanying data layers and map images were prepared by compiling existing geologic mapping and data and fitting them to a geologic interpretation of lidar-derived topographic data.The geologic map, report, and database are the product of a one-year geologic mapping program supported by the United States Geological Survey (USGS), National Cooperative Geologic Mapping Program,under assistance award number G10AC00324. Funding was also provided by the State of Oregon.
Wiley, T.J., McClaughry, J.D., and D'Allura, J., 2011, Geologic database and generalized geologic map of Bear Creek Valley, Jackson County, Oregon: Oregon Department of Geology and Mineral Industries Open-File Report O-11-11, 75 p., scale 1:63,360.
Bear Creek Valley looking northwest toward Emigrant Lake.
2007-2010 – Geologic mapping in the southern Willamette Valley Eugene to Albany
The Oregon Department of Geology and Mineral Industries (DOGAMI) began a three-year project to prepare a detailed and updated digital geologic map of the southern Willamette Valley in 2007. The project was a high priority of the Oregon Geologic Map Advisory Committee and was supported in part by the U.S. Geological Survey (USGS) through its STATEMAP cooperative geologic mapping program. The core product of the study is an Esri format geodatabase that contains detailed spatial information about geologic polygons and structures, and basic data about each geologic unit such as age, lithology, mineralogy, structure and texture. The geodatabase is supported by a report describing the geology in detail, and digital appendices with geochemical, geochronological, paleontological, structural and water well data. The publication also includes a thematic map (Plate 1) at a scale of 1:63,360 to show the distribution of key lithologies in the study area. The geologic map created during this study refines our understanding of geologic conditions in the southern Willamette Valley that control ground water, hydrocarbon and aggregate resources, and landslide and seismic hazards. This geologic map was partially funded by USGS National Cooperative Geologic Mapping program assistance awards 07HQGA0078 (2007), 08HQAG0087 (2008), and G09AC00165 (2009). Matching funds were provided by DOGAMI.
McClaughry, J.D., Wiley, T.J., Ferns, M.L., and Madin, I.P., 2010, Digital Geologic Map of the Southern Willamette Valley, Benton, Lane, Linn, Marion, and Polk Counties, Oregon: Oregon Department of Geology and Mineral Industries Open-File Report O-10-03, 121 p., scale 1:63,360.
Oligocene basalt dikes intruding marine sandstone and conglomerate in the Eugene Formation in the Coburg Hills along the eastern margin of the southern Willamette Valley. The dikes mark the location of one of many basaltic volcanic vent complexes that developed in this area during the Eocene through Miocene. View in the photograph is looking north toward Indian Head, near Union Point.
2005-2007 – Geologic mapping in the Lower Crooked Basin near Prineville
The Oregon Department of Geology and Mineral Industries (DOGAMI) began a two-year project to prepare a detailed and updated digital geologic map of the Prineville area in 2005. The project was a high priority of the Oregon Geologic Map Advisory Committee, and was supported in part by the U.S. Geological Survey through its STATEMAP cooperative geologic mapping program. The core product of the study is an Esri format geodatabase that contains detailed spatial information about geologic polygons and structures, and basic data about each geologic unit such as age, lithology, mineralogy, structure and texture. The geodatabase is supported by this report describing the geology in detail, and digital appendices with geochemical, geochronological, structural and water well data. The geologic map created during this study refines our understanding of the geologic conditions in the north half of the Lower Crooked Basin that control the quantity and quality of ground water supplies, aggregate resources, the distribution of trace metals and radioactive geochemical anomalies, and landslide and sesmic hazards. This study was partially funded by the United States Geological Survey (USGS) National Cooperative Geologic Mapping program under assistance awards 05HQAG0037 and 06HQAG0027 during 2005 and 2006. Matching funds were provided by DOGAMI.
McClaughry, J.D., Ferns, M.L., Gordon, C.L., and Patridge, K.A., in preparation, Digital Geologic Map of the north half of the Lower Crooked Basin, Crook, Deschutes, Jefferson, and Wheeler Counties, Oregon: Oregon Department of Geology and Mineral Industries Open-File Report, scale 1:63,360.
McClaughry, J.D., Gordon, C.L., and Ferns, M.L., 2009, Field trip guide to the middle Eocene Wildcat Mountain caldera, Ochoco National Forest, Crook County, Oregon: Oregon Geology v. 69, no. 1, p. 5-24. http://www.oregongeology.org/pubs/og/OGv69n01-WildcatMountain.pdf
McClaughry, J.D., Ferns, M.L., Gordon, C.L., and Patridge, K.A., 2009, Field trip guide to the Oligocene Crooked River caldera: Central Oregon's supervolcano, Crook, Deschutes, and Jefferson Counties, Oregon: Oregon Geology v. 69, no. 1, p. 25-44. http://www.oregongeology.org/pubs/og/OGv69n01-CrookedRivercaldera.pdf
McClaughry, J.D., Ferns, M.L., and Gordon, C.L., 2009, Field trip guide to the Neogene stratigraphy of the Lower Crooked Basin and the ancestral Crooked River, Crook County, Oregon: Oregon Geology v. 69, no. 1, p. 45-60. http://www.oregongeology.org/pubs/og/OGv69n01-Neogenestrat.pdf
Spires and precipitous cliffs formed from the Oligocene Tuff of Smith Rock at Smith Rock State Park in the northwest part of the map area. This voluminous tuff deposit was emplaced 29.56 million years ago with the formation of the Crooked River caldera, a large volcanic center which underlies the central part of the map area.
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