Soil data release of U.S. Geological Survey Bulletin 1590, collected across the Western United States between 1975 and 1983
In 1978, the late Denis Marchand launched a project to identify, sample, and analyze soil profiles from seven soil chronosequences in the Western United States. The resulting datasets were compiled as part of a series of reports titled "Soil Chronosequences in the Western United States". Early studies of soil …