GEO 1111 Lecture Notes - Lecture 15: Drainage Divide, Evapotranspiration, Olivine

• School: University of Ottawa
• Department: Geology
• Course: GEO 1111
• Professor: Robert Jack Cornett

Document Summary

Geology of niagara escarpment : very vertical cliff: mineral stability : the mineral formed first during bowen"s reaction series will be less stable (the environment on earth was not the same as present) Quartz and iron oxide are very stable. Clay mineral formation: feldspar + acid + water = clay + potassium + soluble silica, most abundant product of weathering, carried away by rain and river waters to become soil nutrients. It"s the movement of water between the hydrosphere, atmosphere and lithosphere. Stream runoff = input losses: input : rain and snow (precipitation evaporation)x catchment area, losses : evapotranspiration. Storage : plants and soil can store water. Ottawa : input 800 mm per year, evapotranspiration 350 mm per year, runoff 450 mm per year. Steady state : inputs and outputs are equal (no change in reservoir size) Residence time = volume / flux per time (input) Residence time = 0. 5 years (in half a year, the lake would drain)