Dolomitic Glades of East-Central Missouri

A characteristic feature of the landscape of the Ozarks is the occurrence on south-and west-facing hillsides of barrens which are locally known as ''glades'' or ''cedar glades.''Such glades, occurring on outcrops of thin-bedded dolomite or dolomitic limestone, principally of lower Ordovician age, have been studied in the area shown on the map (fig.1).It includes about three-fourths of Jefferson County and small parts of adjacent Franklin, Washington and Ste.Genevieve Counties, Missouri, and lies from 25 to 50 miles west, southwest and south of the city of St. Louis, on the northeastern border of the Ozark Plateau.