-127- Limestone: very fine sand and silty size calcite fragments in which the particles have been largely recrystallized to form diagenetic cement; the original calcite particles are thus largely obscured or obliterated; a few larger shell fragments may be present. Siliceous shale: shale more or less cemented either diagenetically or secondarily by chert, commonly as layers in siltstone and shale units. Other terminology follows Dunbar and Rodgers (1957). Section 1 Measured up the southwestern corner of the southwestern flank of Dugout Mountain. Top of ridge Thickness (feet) Leonard Formation 21. Limestone, gray to brown-gray weathering, of organic fragmental calcarenite and calcirudite, coll. 1-21. Parafusulina schucherti? . . . . . . . . . . 11 20. Limestone, yellow to gray-tan weathering, conglomeratic near base, biothermal near top with a flat 2 inch dark siliceous capping . . 4 19. Sandstone, like unit 17 . . . . . . . . . . . . . . 3