Oglesby soils formed mainly in the Kiamichi Clay and Edwards Limestone undivided formations of the Lower Cretaceous Period. Mean annual precipitation ranges from 26 to 34 inches. The mean annual temperature is 64 to 68 degrees F. Frost free days range from 220 to 260 days and elevation ranges from 850 to 1250 feet. Thornthwaite P-E indices range from 44 to 56. These include the competing Eckrant series and the Bolar , Crawford , and Denton series.
Eckrant soils are on similar positions.
Bolar soils are moderately deep, loamy soils on side slopes, and ridgetops, upslope from Oglesby soils. Crawford soils have a sola 20 to 40 inches thick and are on similar surfaces. Denton soils are deep soils on side slopes, upslope from Oglesby soils. Present native vegetation includes sideoats grama, Texas wintergrass, threeawn and buffalograss. Woody vegetation includes post oak, elm, hackberry and a few scattered live oak.