Geological survey
SYSTEMATIC INVESTIGATION OF THE GEOLOGY IN A REGION FOR THE PURPOSE OF CREATING A GEOLOGICAL MAP OR MODEL
Geological Survey; National Geological Survey; Geological surveys
A geological survey is the systematic investigation of the geology beneath a given piece of ground for the purpose of creating a geological map or model. Geological surveying employs techniques from the traditional walk-over survey, studying outcrops and landforms, to intrusive methods, such as hand augering and machine-driven boreholes, to the use of geophysical techniques and remote sensing methods, such as aerial photography and satellite imagery.