RELATIVE DATING

Question 1

relative dating

Answer 1

determines which rock is older or younger than other rock, putting events of rock formation into sequence

(fossils, structure, cross-cutting relationships)

Question 2

how is relative dating done

Answer 2

fossils

principle of cross-cutting relationship

steno’s laws:

• principle of superposition
• principle of original horizontality
• principle of lateral continuity

Question 3

principle of superposition

Answer 3

sequence of undisturbed layered rocks, oldest at bottom

Question 4

principle of original horizontality

Answer 4

layered strate deposited horizontal or nearly horizontal or nearly parallel to earth’s surface

Question 5

principle of lateral continuity

Answer 5

principle of lateral continuity

Question 6

relative dating: fossils

Answer 6

fossil are evidence of organisms preserved in rocks.

diversity of organism change over time with new types of plants and animals emerging.

fossils can be used to determine relative ages of strata.

Question 7

principle of cross-cutting relationship

Answer 7

states that a rock is older than any rock that cuts throu it