ES Notes-Geologic Time to Hydrologic Cycle

ES Notes-Geologic Time to Hydrologic Cycle - General Earth...

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General Earth Science Notes A. Geologic Time a. Relative time - what the sequence of events are that produced the rock i. Law or original horizontality is for sedimentary rocks ii. Principle of cross-cutting relationships 1. Faults 2. Igneous intrusions - dikes, sills iii. Law of Superposition is for sedimentary rocks 1. Stuff on top is youngest iv. Principle b. Geologic time scale i. Chart used to show changes in time ii. Eras 1. Cenozoic 2. Mesozoic 3. Paleozoic 4. Precambrian iii. 337 iv. Epoch - holocene Epoch - now A. Hydrologic Cycle a. Evaporation b. Precipitation c. Infiltration d. Runoff e. Transpiration B. Drainage patterns a. Dendritic Drainage b. Trellis       "     " c. Radial d. Rectangular C. Discharge and Velocity a. Discharge i. Q=A*v 1. A=cross sectional area v=velocity (speed at which water is moving) ii. Increases 1. Larger stream channel 2. Higher velocity D. Stream flow a. Changes in stream flow down stream
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i. Youthful streams have steep gradient ii. Mature streams have more gentle gradient E. Groundwater a. Properties of rock and sediment i. Porosity 1. The % of pore space between the mineral grains in rock, 
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This note was uploaded on 04/18/2008 for the course GEO 27114 taught by Professor Rohs during the Spring '08 term at Northwest Missouri State University.

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ES Notes-Geologic Time to Hydrologic Cycle - General Earth...

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