27.3-4 Flashcards
principle of superpositon
law of superposition a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock the oldest layer is at the base and that the layers are progressively younger with ascending order in the sequence.
relative dating
The law of superposition states that a sedimentary rock layer in a tectonically undisturbed sequence is younger than the one beneath it and older than the one above it
infiltration
process which water enters earth and becaome ground water
water table
upper boundary of a upper zone
porosity percsentage of materials total volume
aquifer
transfer through pore space
absolute dating
process of assigniing exact material
uniformitarianism
whcih states thast he laws of naturfe today
unconformities
are gaps in rock
fossils
remains or traces of organsims
what persent of water on earth is salt
97%
what percentage of water on eartth is fresh
3%
where is the majority of fresh water found
lakes river and ground water
where is the smaller percentage of fresh water found
what is precipitation
rain snow sleet and hail
what is run off
water running offland surface
what is infiltration
when water enters earth and becomes ground water
whatis transpiration
when plants release water vapor into the atmosphere
what is evaporation
when water vaporizes and enters the atmosphere
what is condensation
water vapor colides wirth other water molicules
what is the water cycle
water goes to cloiuds and back to easrth
what is an unsatgurated zone
a porus area where water easily passeds through
saturated zone
under unsaturatedzone
water ends
unsarudet zone
what is an aquifer
whatis the name of the great plainjs aquifer
eight staes
how are wtaer speings filled
what is an arestian well
what is a cone depression
