Safety is the first consideration in finding a site for a deep geological repository for Canada’s used nuclear fuel. Detailed geological mapping (also known as detailed outcrop mapping) is one of a series of technical studies that help identify a safe and secure location for the repository.
Why This Study Is Done
The purpose of detailed outcrop mapping is to further advance our understanding of the bedrock geology in the areas being studied. These mapping investigations help refine our understanding of the rock type. We study the structural character of the bedrock, especially the size, type and location of fractures. We also look at the rock’s physical characteristics, such as colour and texture.
Detailed outcrop mapping also helps us better understand the distribution and thickness of overburden, which is made up of looser materials like clay, sand or gravel overlying the bedrock. We also document the accessibility of the areas studied.