ABSTRACT
This chapter demonstrates that ground penetrating radar (GPR) can be used to map the depth and lateral extent of sand and gravel deposits. With the demand for aggregate likely to increase, future planning for aggregate needs is important. GPR can aid in preliminary investigations as well as in detailed exploration for sand and gravel aggregate. The term braid delta can be described as laterally extensive, sheet-like sand and gravel bodies dominated by trough and planar, tabular cross-bedding underlain by lacustrine mud or bedrock. Fan-foreset deltas are dominated by coarse-grained, steeply-inclined layers. Most of the sand and gravel sediment is stored in the dipping foreset facies. In the Fort McMurray region, Alberta, Fisher et al. collected and described numerous GPR profiles from catastrophic flood deposit. At the Calgary site, although each geophysical method tested revealed information regarding the aggregate deposit, it was determined that GPR was the most suitable method to meet the survey objectives.
