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Unformatted text preview: -B horizon: Heavily leached-C horizon: Moderately leached or weakly leached Physical and chemical weathering together produce.-Sand: rock fragments and resistant minerals like quartz-Clay: microscopic sheet silicate minerals-Dissolved salts: mostly sodium bicarbonate Weathering products are carried to the ocean by the hydrologic cycle-The hydrologic cycle is driven by solar energy-Material is transported both in solution and in suspension by water flowing to the ocean Erosion and transport of sediments is controlled by stream velocity-Sediment transport occurs mostly during floods Each river gathers up materials from its drainage basin and carries them to the ocean-Drainage basins are separated by drainage divides Blacksburg is on the drainage divide between the Roanoke River and the New River...
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- Fall '08
- Drainage basin, Physical weathering breaks, Roanoke River