stratigraphy - exam 3

Question 1

a body of rocks recognized as a unit or distinct entity

Answer 1

stratigraphic unit

Question 2

the description, classification, naming, and correlation of rock units for the purpose of establishing their relationship in space and their succession in time

Answer 2

stratigraphy

Question 3

stratigraphy related to relative time relations and ages of rock bodies

Answer 3

chronostratigraphy

Question 4

the science of dating and determining absolute time sequence of events in the history of earth

Answer 4

geochronology

Question 5

named units based on the lithologic character (rock type) of the rocks and their stratigraphic relationships

Answer 5

lithostratiagraphy

Question 6

a formation, most simply, is a

Answer 6

-mappable rock unit
-easily identifiable/distinguishable
-based upon gross lithology

Question 7

two or more successive or contiguous formations

Answer 7

a group

Question 8

a small rock-strat unit

Answer 8

a bed

Question 9

a subdivision of a formation or a rock unit included within a formation

Answer 9

a member

Question 10

different rocks respited in different environments at the same time

Answer 10

facies

Question 11

the gradual change of facies in time, indicating gradually changing sedimentation conditions

Answer 11

facies evolution

Question 12

lateral or vertical variations in depositional environments

Answer 12

aluvial fans

Question 13

Johannes walther law, walther’s law is the law of?

Answer 13

law of the correlation of facies

Question 14

what does the correlation of facies state?

Answer 14

vertical progression of facies will be the same as lateral facies changes assuming no time breaks