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Using Soil And Forest Type To Map Bedrock In Nemo, South Dakota, Madison R. Isaac
Using Soil And Forest Type To Map Bedrock In Nemo, South Dakota, Madison R. Isaac
Williams Honors College, Honors Research Projects
Bedrock mapping can be used to locate economic deposits, assess natural disaster (e.g., mass wasting) risk, and decipher the geologic history of a region. This study examines a site at Nemo, South Dakota to assess whether two contrasting types of bedrock produce different soil that result in different types of forest cover. Although bedrock varied, other soil forming factors were uniform. Within an approximately 1 km2 area, quartzite and metagabbro bedrock, ponderosa pine and quaking aspen forests were mapped. The soil above the quartzite bedrock is thinner and sandier and is dominated by ponderosa pine (Pinus ponderosa). …