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.
Ultrabooks Guide. If you want one of the most portable computers on the market, consider getting an Ultrabook, a new kind of super-thin, ultra-light laptop that wakes from sleep quickly and offers a compelling Windows 8 experience.
Designed exclusively for ultraslim HP EliteBook Notebooks. Expands display, network, and device connectivity so you can be more productive throughout the dayâall through a simple one-click slide-in side dock. Four USB 3.0 ports offer high-speed connectivity to the USB devices you use most.