In a given area where you have little knowledge of the local geology (rocks types, fossils, etc.), what type of unconformity would be the most difficult to recognize in an exposed sequence of rocks? Why?
What will be an ideal response?
Disconformity because the strata on either side are essentially parallel.
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Which of the following is a principle to interpret relative ages?
a) The youngest rock is on the bottom b) a geologic feature is older than any rock or feature it crosscuts c) a younger rock can include pieces of an older rock d) an older magma can bake or metamorphose younger rocks
Large loess deposits are only found in the northern hemisphere Indicate whether the statement is true or false
What are terranes? How are they recognized? What role did accretion of terranes play in the growth of western North America?
Which of the following can cause enzyme activity to either increase or decrease?
A) changing the temperature B) changing the pH C) both a and b D) neither a nor b