Chapter 3. Geomorphology
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Pleistocene Geologic epoch ending 10,000 years ago and associated with the
ice ages
Quaternary Geologic time period beginning roughly 2 million years ago and
continuing until today
surface of rocks exposed at the surface and becomes increasingly dark with
exposure
Sheetflood Sheet of unconfined floodwater moving down a slope
Terrace Abandoned floodplain and channel surface isolated above the active
floodplain that formed under a previous hydrologic regime
Transmission loss Decrease in discharge in a downstream direction due to
infiltration of water into the channel bed; especially pronounced in arid
climates
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