Author
Spencer, Jon E.
Issue Date
1992Keywords
Down-To-Earth Seriesgranite
limestone
mudstone
calcareous
Gamma ray spectrometer
uranium
Charcoal canister
Alpha track detector
Pressure Gradients
Porosity
Permeability
Diffusion
Parent
Daughter
Alpha particles
Beta particles
Gamma Rays
half-life
radioactive
isotope
geologic hazard
decay
radon
Radiation