Keyphrases
Illinois
100%
Aquifer
100%
Dolomite
100%
Driftless Area
100%
Hydrogeochemical
100%
Groundwater
60%
Background Concentration
40%
Galena
40%
Water Samples
20%
Chemical Composition
20%
Background Level
20%
Flow Path
20%
Short Residence Time
20%
Crevice
20%
Bicarbonate
20%
Fluoride Concentration
20%
Tritium
20%
Potassium Concentration
20%
Water Quality Parameters
20%
Shale
20%
Groundwater Samples
20%
Bedding Plane
20%
Geochemical Controls
20%
Karst Region
20%
Ionic Ratios
20%
Well Casing
20%
Pre-settlement
20%
Aquifer Materials
20%
Geological Control
20%
Tritium Concentration
20%
State Geological Surveys
20%
Shallow Aquifer
20%
Bedrock Geology
20%
Natural Springs
20%
Deep Aquifer
20%
Artesian Well
20%
Abandoned Wells
20%
Earth and Planetary Sciences
United States of America
100%
Illinois
100%
Dolomite
100%
Tritium
40%
Silurian
40%
Geology
20%
Geological Survey
20%
Bedding Plane
20%
Water Type
20%
Artesian Well
20%
Regional Geography
20%