Photograph of Carey silt loam profile. Note the compound columnar structure and the accumulation of caliche. The A1 horizon is about 12 inches thick, the B2 and B3 are about 2 ½ feet thick and the C ca [ca = pedogenic carbonates = carbonic acids that can that modify soil constituents] horizon extend below this. Entire picture covers 6½ feet of depth, typical of much of Carey soils in Harper County, transported by alluvial-colluvial forces from nearby hills and a weak B horizon has formed in places. Some soils are moderately permeable. OK-304-4.