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Rivers Earth Science
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Sediments Graded bedding
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Sediments Laminations
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Sediments Laminations
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Sediments Ripple Marks -- asymmetrical
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Sediments Ripple Marks -- symmetrical
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River Sediments Crossbedding
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Sediments Mudcracks
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Sediments Mudcracks
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Flood Plains Provide a water reservoir during flooding
Provide residence time
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Drain Patterns Dendritic
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Drain Patterns Dendritic
Result of water flowing across loose, unconsolidated sediment or soil
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Drain Patterns Radial
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Drain Patterns Radial Results from water flowing from a dome or hill
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Drain Patterns Rectangular
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Drain Patterns Rectangular Faulted or fractured rock
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Drain Patterns Trellis
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Drain Patterns Trellis Tilted or folded rock
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Drain Patterns Dendritic Radial Rectangular Trellis
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Deltas Tributaries Distributaries
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Delta Types Lobate
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Delta Types Lobate Large amounts of sediment
Weak or disorganized ocean currents
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Delta Types Lobate -- Mississippi
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Delta Types Arcate
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Delta Types Arcate Low sediment Strong, single-direction ocean current
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Delta Types Arcate -- Nile
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Delta Types Cuspate
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Delta Types Cuspate Moderate sediment
Strong, two-directional ocean current
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Delta Types Cuspate -- Tiber
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Delta Types Estuarine
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Delta Types Estuarine – Colorado
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Delta Types Lobate Arcate Cuspate Estuarine
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Superposition The Grand Canyon is a result of the uplift of the land where the Colorado River runs.
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