The C horizon is below the A and B horizons of most soils. It consists of materials that were little altered by the soil-forming processes, though the materials may be modified by weathering. Below the C horizon in some soils is an R horizon of consolidated bedrock, such as limestone, shale, or sandstone.
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VIEW ALL PHOTOS IN GALLERY. Laptops are a vast and complex category, and as such, there are subcategories (i.e. ultraportables, netbooks, desktop replacement) that we, the tech industry, create to differentiate the small from the large, thin from the fat, and weak from the powerful.