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Airborne magnetic data, Munsungun region in northern Maine, 2021 Airborne magnetic data are provided here as part of the data release, "Airborne magnetic and radiometric survey, Munsungun Region, northern Maine, 2021." This website includes the processed aeromagnetic data provided in an ascii .csv file and a geoTIFF image showing the anomalous magnetic field. The contractor report is available on the parent page. Data for this survey were collected and processed by Sander Geophysics under contract with the USGS as part of the Earth Mapping Resources Initiative (Earth MRI) using a fixed wing aircraft with a magnetometer mounted in a tail stinger and a fully calibrated gamma ray spectrometer, data were collected along northwest-southeast flight lines spaced 250 meters (m) apart... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Allagash Lake, Aroostook County, Aroostook River, Bever Brook, Big Machias Lake, All tags... Carr Pond, Chamberlain Lake, Chesuncook Lake, Clear Lake, Eagle Lake, Earth Mapping Resources Initiative, EarthMRI, Fish River, Fish River Lake, Geology, Geophysics, and Geochemistry Science CenterGGGSC, Gero Island, Glazier Brook, Harrow Lake, Harvey Pond, Haymock Lake, Little Madawaska River, Longley Pondk, Loon Lake, MRP, Machias River, Maine, Mineral Resources Program, Mud Lake, Munsungun Region, Northern Maine, Penobscot County, Piscataquis County, Pleasant Lake, Portage Lake, Pratt Lake, Priestly Lake, Rocky Brook, Round Pond, Rowe Lake, Saint Froid Lake, Shallow Lake, Somerset County, Spider Lake, Squa Pan Lake, Square Lake, Third Lake, Twentyfive Mile Brook, Twin Lake, U.S. Geological Survey, USA, USGS, United States, United States of America, Webster Brook, Webster Lake, aeromagnetic surveying, aeroradiometric surveying, airborne geophysical survey, economy, geophysics, geoscientificInformation, geospatial datasets, horizontal magnetic gradiometry, magnetic field (earth), potassium, thorium, uranium, vertical magnetic gradient, Fewer tags Ground-based gamma spectrometry data collected in northern Maine (Version 2.0, September 2022) Radiometric (gamma spectrometry) measurements were made during walking surveys in northern Maine using a GF Instruments Gamma Surveyor. These surveys involved recording measurement averages over 30-second intervals while holding the instrument approximately 1 meter above the ground. Locations were obtained via a handheld GPS. Data were collected over and in the vicinity of a radiometric thorium anomaly identified via an airborne survey. For more information on radiometric methods, please see the International Atomic Energy Agency publication "Guidelines for Radioelement Mapping Using Gamma Ray Spectrometry Data" (2003). Reference: International Atomic Energy Agency, 2003, Guidelines for Radioelement Mapping Using... Categories: Data, Data Release - Revised; Tags: Aroostook County, GGGSC, Geology, Geophysics, and Geochemistry Science Center, MRP, Maine, All tags... Mineral Resources Program, USGS Science Data Catalog (SDC), biota, gamma spectrometry, potassium, radiometric, thorium, uranium, Fewer tags Airborne radiometric data, Munsungun region in northern Maine, 2021 Airborne radiometric data are provided here as part of the data release "Airborne magnetic and radiometric survey, Munsungun Region, northern Maine, 2021." This website includes the processed aeroradiometric digital flight line data (gamma spectrometry for K, U and Th) provided in an ascii .csv file and geoTIFF images showing a ternary image of relative K, U and Th and individual K, U, and Th values. Radiometric spectra are provided in ascii and binary formats within the contractor package on the parent page. The contractor report is also available on the parent page. Data for this survey were collected and processed by Sander Geophysics under contract with the USGS as part of the Earth Mapping Resources Initiative... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Allagash Lake, Aroostook County, Aroostook River, Bever Brook, Big Machias Lake, All tags... Carr Pond, Chamberlain Lake, Chesuncook Lake, Clear Lake, Eagle Lake, Earth Mapping Resources Initiative, EarthMRI, Fish River, Fish River Lake, Geology, Geophysics, and Geochemistry Science CenterGGGSC, Gero Island, Glazier Brook, Harrow Lake, Harvey Pond, Haymock Lake, Little Madawaska River, Longley Pondk, Loon Lake, MRP, Machias River, Maine, Mineral Resources Program, Mud Lake, Munsungun Region, Northern Maine, Penobscot County, Piscataquis County, Pleasant Lake, Portage Lake, Pratt Lake, Priestly Lake, Rocky Brook, Round Pond, Rowe Lake, Saint Froid Lake, Shallow Lake, Somerset County, Spider Lake, Squa Pan Lake, Square Lake, Third Lake, Twentyfive Mile Brook, Twin Lake, U.S. Geological Survey, USA, USGS, United States, United States of America, Webster Brook, Webster Lake, aeromagnetic surveying, aeroradiometric surveying, aeroradiometric surveying, airborne geophysical survey, economy, geophysics, geoscientificInformation, geospatial datasets, magnetic field (earth), potassium, thorium, uranium, Fewer tags USGS National Hydrography Dataset (NHD) Best Resolution for HU8-01010009 20141227 HU-8 Subbasin FileGDB 9.3.1 The USGS National Hydrography Dataset (NHD) is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs), paths through which water flows (canals, ditches, streams, and rivers), and related entities such as point features (springs, wells, stream gages, and dams). The information encoded about these features includes classification and other characteristics, delineation, geographic name, position and related measures, a "reach code" through which other information can be related to the NHD, and the direction of water flow. The network of reach codes delineating water and transported material flow allows users... Categories: Data; Tags: Administrative watershed units, Area of Complex Channels, Area to be submerged, Aroostook County, Artificial path, All tags... Basin, Bay/Inlet, Boundaries, Boundary, Bridge, Canal/Ditch, Coastline, Connector, Dam/Weir, Dams, Drainage areas for surface water, Drainage systems and characteristics, Estuary, Flow direction network, Flume, ForeShore, Gaging Station, Gate, HU10, HU12, HU14, HU16, HU2, HU4, HU6, HU8, HU8-01010009, HUC, Hazard Zone, Hydrographic, Hydrography, Hydrologic Unit Code, Hydrologic Units, Ice mass, Inundation Area, Lakes, Levee, Line, Lock Chamber, ME, Maine, Marsh, Nonearthen Shore, Orthoimage, Playa, Point, PointEvent, Pond, Rapids, Reach, Reach code, Reef, Region, Reservoir, Rivers, Rock, Sea/Ocean, Sink/Rise, Sounding Datum Line, Special Use Zone, Special Use Zone Limit, Spillway, Stream, Stream/River, Sub-basin, Sub-region, Subbasin, Submerged Stream, Subregion, Subwatershed, Surface water systems, Swamp, Topographic, Tunnel, US, US-ME, US-ME-Aroostook, Underground Conduit, United States, WBD, Wall, Wash, Water Inland Theme, Water Intake Outflow, Waterfall, Watershed, Watershed Boundaries, Watershed Boundary Dataset, Well, dataset, inlandWaters, Fewer tags Airborne magnetic and radiometric survey, Munsungun region in northern Maine, 2021 This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over parts of northern Maine. The airborne data collection was funded by the U.S. Geological Survey (USGS) Earth Mapping Resource Initiative (Earth MRI) with goals of better understanding volcanogenic massive sulfide mineral deposits, sediment hosted manganese deposits, and their surrounding geologic framework. Data for this survey were collected and processed by Sander Geophysics under contract with the USGS. The airborne survey took place June-July 2021. Using a fixed wing aircraft with a magnetometer mounted in a tail stinger and a fully calibrated gamma ray spectrometer, data were collected along... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: "Geophysics"], Allagash Lake, Aroostook County, Aroostook River, Bever Brook, All tags... Big Machias Lake, Carr Pond, Chamberlain Lake, Chesuncook Lake, Clear Lake, Eagle Lake, Earth Mapping Resources Initiative, EarthMRI, Fish River, Fish River Lake, Geology, Geophysics, and Geochemistry Science CenterGGGSC, Gero Island, Glazier Brook, Harrow Lake, Harvey Pond, Haymock Lake, Little Madawaska River, Longley Pondk, Loon Lake, MRP, Machias River, Maine, Mineral Resources Program, Mud Lake, Munsungun Region, Northern Maine, Penobscot County, Piscataquis County, Pleasant Lake, Portage Lake, Pratt Lake, Priestly Lake, Rocky Brook, Round Pond, Rowe Lake, Saint Froid Lake, Shallow Lake, Somerset County, Spider Lake, Squa Pan Lake, Square Lake, Third Lake, Twentyfive Mile Brook, Twin Lake, U.S. Geological Survey, USA, USGS, USGS Science Data Catalog (SDC), United States, United States of America, Webster Brook, Webster Lake, ["Economic Geology", aeromagnetic surveying, aeroradiometric surveying, airborne geophysical survey, economy, geophysics, geoscientificInformation, geospatial datasets, horizontal magnetic gradiometry, magnetic field (earth), potassium, thorium, uranium, vertical magnetic gradient, Fewer tags