High-resolution airborne magnetic and radiometric survey of the Republic Graben, Okanogan and Kettle metamorphic core complexes, Kootenay Arc and surrounding regions, Northeastern Washington

Dates

Publication Date: 2024-02-08
Start Date: 2022-09-26
End Date: 2023-08-21

Citation

Staisch, L. M., Connell, D. M., and Blakely, R. J., 2024, High-Resolution Airborne magnetic and radiometric survey of the Republic Graben, Okanogan and Kettle Metamorphic core complexes, Kootenay Arc and surrounding regions, Northeastern Washington: U.S. Geological Survey data release, https://doi.org/10.5066/P1PKEZOJ.

Summary

The Republic survey consists of high-resolution aeromagnetic and radiometric data designed to image the subsurface geology and structure of a large portion of northeastern Washington. These data are intended for rigorous modeling and interpretation of the geology and structure in this region and will be used to evaluate the potential for undiscovered resources and will contribute to USGS and Washington DNR-related mineral and geothermal resource assessments of the region. This release includes aeromagnetic and aeroradiometric data collected via low-altitude helicopter flown over northeastern Washington State, centered over the town of Republic, Washington. The data were acquired between September 26, 2022 and August 21, 2023 by Precision [...]

Summary

The Republic survey consists of high-resolution aeromagnetic and radiometric data designed to image the subsurface geology and structure of a large portion of northeastern Washington. These data are intended for rigorous modeling and interpretation of the geology and structure in this region and will be used to evaluate the potential for undiscovered resources and will contribute to USGS and Washington DNR-related mineral and geothermal resource assessments of the region. This release includes aeromagnetic and aeroradiometric data collected via low-altitude helicopter flown over northeastern Washington State, centered over the town of Republic, Washington. The data were acquired between September 26, 2022 and August 21, 2023 by Precision Geosurveys, Inc. of Langley, British Columbia and processed by EDCON-PRJ, Inc. of Lakewood, Colorado, contracted by the U.S. Geological Survey and funded through the Earth Mapping Resources Initiative (EarthMRI). The survey includes gridded data from target altitude of 80-100 meters above ground level, subject to aircraft climb and descent limitations. Primary transverse flight lines were flown in the east-west direction and spaced 200 meters apart. Tie lines were flown in the north-south direction and spaced 2000 meters apart. Additionally, the survey includes two transect lines flown down the Similkameen and Okanogan Valleys where local topography was too extreme to maintain an ideal drape surface. A total of 94,506 line kilometers of data were collected over an area of 16,885 square kilometers. Survey procedures are described in detail in the document “WA Republic Mag RAD D22 Project Report_report.pdf” available in this data release. The Republic aeromagnetic and aeroradiometric survey was collected over steep and highly variable terrain, thus the terrain clearance should be considered carefully when modeling and interpreting magnetic and radiometric data. This data release includes .csv file databases for the main survey and transect data collections, derivative magnetic and radiometric data in map view in .grd and .tiff file format, and shapefiles of the transect lines along the Similkameen and Okanogan Valleys.

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Contacts

Point of Contact :: Lydia M Staisch, U.S. Geological Survey, SOUTHWEST REGION
Originator :: Lydia M Staisch, Dylan M Connell, Richard J Blakely
Metadata Contact :: Lydia M Staisch, U.S. Geological Survey, SOUTHWEST REGION
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey - ScienceBase
SDC Data Owner :: Geology, Minerals, Energy, and Geophysics Science Center
USGS Mission Area :: Energy and Minerals

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Metadata_WA_Republic_MAG_RAD_D22.xml Original FGDC Metadata	View	20.72 KB	application/fgdc+xml
		6.38 GB	application/zip

Shapefile: Footprint_WA_Republic_base_WGS84z11n.zip
Footprint_WA_Republic_base_WGS84z11n.cpg		5 Bytes
Footprint_WA_Republic_base_WGS84z11n.dbf		124 Bytes
Footprint_WA_Republic_base_WGS84z11n.prj		403 Bytes
Footprint_WA_Republic_base_WGS84z11n.sbn		132 Bytes
Footprint_WA_Republic_base_WGS84z11n.sbx		116 Bytes
Footprint_WA_Republic_base_WGS84z11n.shp		840 Bytes
Footprint_WA_Republic_base_WGS84z11n.shp.xml		2.35 KB
Footprint_WA_Republic_base_WGS84z11n.shx		108 Bytes

Shapefile: LinePath_WA_Republic_base_WGS84z11n.zip
LinePath_WA_Republic_base_WGS84z11n.cpg		5 Bytes
LinePath_WA_Republic_base_WGS84z11n.dbf		22.01 KB
LinePath_WA_Republic_base_WGS84z11n.prj		403 Bytes
LinePath_WA_Republic_base_WGS84z11n.sbn		13.57 KB
LinePath_WA_Republic_base_WGS84z11n.sbx		556 Bytes
LinePath_WA_Republic_base_WGS84z11n.shp		276.86 MB
LinePath_WA_Republic_base_WGS84z11n.shp.xml		3.82 KB
LinePath_WA_Republic_base_WGS84z11n.shx		11.79 KB

Shapefile: LinePath_WA_Republic_transects_WGS84z11n.zip
LinePath_WA_Republic_transects_WGS84z11n.cpg		5 Bytes
LinePath_WA_Republic_transects_WGS84z11n.dbf		282 Bytes
LinePath_WA_Republic_transects_WGS84z11n.prj		403 Bytes
LinePath_WA_Republic_transects_WGS84z11n.sbn		164 Bytes
LinePath_WA_Republic_transects_WGS84z11n.sbx		124 Bytes
LinePath_WA_Republic_transects_WGS84z11n.shp		2.38 KB
LinePath_WA_Republic_transects_WGS84z11n.shp.xml		2.37 KB
LinePath_WA_Republic_transects_WGS84z11n.shx		116 Bytes

Purpose

These data were collected as part of the Earth Mapping Resources Initiative (Earth MRI) program of the U.S. Geological Survey (USGS) in collaboration with the Washington Department of Natural Resources to better understand the geology and critical mineral resources in the area.

High-resolution airborne magnetic and radiometric survey of the Republic Graben, Okanogan and Kettle metamorphic core complexes, Kootenay Arc and surrounding regions, Northeastern Washington

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