Release of subatomic particles from earth materials. Generally the energy of these particles is used to determine the chemical elements present.
This category is also used for gamma ray emission.

Results listed by similarity [list alphabetically]
Terrestrial radioactivity and gamma-ray exposure in the United States and Canada

Flight-line databases and derived grids from aeroradiometric surveys across the US carried out during the 1970s

Aerial gamma-ray surveys in Alaska

Measurements indicating abundance of radioactive elements in near-surface rocks. Grids and flight-line data from surveys flown 1976-1980.

Ground-based gamma spectrometry data collected in northern Maine

Radiometric (gamma spectrometry) measurements made during walking surveys in this area. Data were collected over and in the vicinity of a radiometric thorium anomaly identified via an airborne survey. Data are provided in CSV format.

Aeromagnetic and aeroradiometric data for the conterminous United States and Alaska from the National Uranium Resource Evaluation (NURE) program of the U.S. Department of Energy

Aeroradiometric and aeromagnetic flight-line data from surveys flown at 400 feet with line spacing from 3 to 6 miles from 1974 through 1981.

Airborne radiometric maps of Mountain Pass, California

Geophysical investigations of Mountain Pass and vicinity were begun as part of an effort to study regional crustal structures as an aid to understanding the geologic framework and mineral resources of the eastern Mojave Desert. The study area encompasses

Radiometric Survey in Western Afghanistan: A Website for Distribution of Data

Radiometric (uranium, thorium, potassium content and gamma-ray intensity) and related data were digitized from radiometric and survey route location maps of western Afghanistan previously published by others in 1976.

Radon in soils of parts of Cameron, Hidalgo, and Willacy Counties, Texas

Analysis of soil samples in the Texas borderland area

Solid-phase data from cores at the proposed Dewey Burdock uranium in-situ recovery mine, near Edgemont, South Dakota

Geochemical and mineralogical analysis of uranium-bearing sandstone in order to help understand mineral deposits of this type.

Surface mineral maps of Afghanistan derived from HyMap imaging spectrometer data, version 2

The report presents new maps from data collected in 2007 and the processing steps applied to that data. The maps are being used for natural resource development and to prioritize study areas of mineral distribution to assist with economic revitalization.