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Ch. 12
Running Water
27
Geology
Undergraduate 1
11/20/2012

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Cards

Term
Abrasian
Definition
Term
Alluvial Fan
Definition
Lobate deposits of gravel and sand deposited on land
Term
Alluvium
Definition
-ALL products of sedimentation that occurs during flooding
Term
Base Level
Definition
-Lowest level to which streams can erode is sea level
Term
Bed Load
Definition
-Composed of sand and gravel that is transported along a stream's bed by saltation, rolling, and sliding.
Term
Braided Stream
Definition
-Streams with too much sand and gravel to transport
-Sand and gravel are deposited as bars
Term
Delta
Definition
-Alluvial deposits accumulated at the mouth of a stream
Term
Discharge
Definition
-Volume of water that passes a given point
Term
Dissolved Load
Definition
-Invisible because it is composed of ions transported in solution
Term
Divide
Definition
-Topographically higher areas dividing drainage basins
Term
Drainage Basin
Definition
-Area where surface water from rain and melting snow converge
Term
Drainage Pattern
Definition
-Configuration of a natural drainage system
Term
Floodplain
Definition
-Flat lowland areas paralleling streams
Term
Graded Stream
Definition
-Smooth, concave profile of equilibrium which all elements are adjusted to one another
Term
Gradient
Definition
-The slope of the water flowing downhill
Term
Hydraulic Action
Definition
-Impact of water
-Effective in dislodging loose soil
Term
Hydrologic Cycle
Definition
-Continuous cycle of movement and phase change of water
Term
Incised Meanders
Definition
-A deep valley cut by a meandering stream
Term
Meandering Stream
Definition
-Carry much more suspended load and have a single channel
Term
Natural Levee
Definition
-Water goes over the bank of the channel, the velocity decreases as it spreads out on the floodplain, depositing a natural levee.
Term
Oxbow Lake
Definition
-Formed when meander loops are cut off from stream channels
Term
Point Bar
Definition
-A body of cross bedded sand
-Sometimes made of gravel
Term
Runoff
Definition
-Occurs when rainfall intensity exceeds infiltration capacity of soil
Term
Stream Terrace
Definition
-Elongated terraces that flank the sides of floodplains
Term
Suspended Load
Definition
-Made of the smallest particles that can be kept in suspension in water by turbulence
Term
Valley
Definition
-Low areas on land bounded by higher hills or mountains
Term
Velocity of Running Water
Definition
-Measure of the distance water travels in a given amount of time.
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