Short papers in the geologic and hydrologic sciences, articles 293-435

The scientific and economic results of work by the United States Geological Survey during the fiscal year 1961, the 12 months ending June 30, 1961, are summarized in 4 volumes. This volume includes 143 short papers on subjects in the fields of geology, hydrology, and related sciences, prepared by members of the Geologic, Water Resources, and Conservation Divisions of the Survey. Some are announcements of new discoveries or observations on problems of limited scope, which may or may not be described in greater detail subsequently. Others summarize conclusions drawn from more extensive or continuing investigations, which in large part will be described in greater detail in reports to be published at a later date

Professional Paper 424-A provides a synopsis of the more important new findings resulting from work during the fiscal year. Professional Papers 424-B and 424-C contain additional short papers like those in the present volume.