Transcript Relative dating

Relative Dating
Rock Dating Methods
I. Relative dating: Based
on position of fossil in
sedimentary rock.
-Can determine whether
an object/event is older
or younger than other
objects/events
Geologic Time: Relative Dating Websim
Relative Geologic Dating 1
A. The Law of Superposition

A principle that states that younger rocks lie
above older rocks if the layers have not
been disturbed.
Younger
Older
Page 66 in Holt textbook
B. How Rock Layers Become
Disturbed

C. Unconformity
A break in the
geologic record.
-See Page 68 in Holt
text.
Relative Dating Exercises

Always start with the oldest rock and work
toward the present. List the letters in order,
with the oldest at the bottom.
Relative Dating Link
Relative Dating Exercises

Always start with the oldest rock and work
toward the present. List the letters in order,
with the oldest at the bottom.
P, K, M, S, R, Erosion A, B, J, F
Place the Events in Order
-Use colors to represent each
layer.
Place the Events in Order
-Use colors to represent each layer.
Green, Red, Blue, Green, Red, Blue, Green, Blue, Green, Folding, A, Erosion N, Brown, Orange, Yellow