Evidences of plate movement

1. Evidences of Plate
Movements
Week 8 - Science 10

2. Objectives
- Describe the possible causes of the plate movement
(S10ES –Iaj-36.5)
- Enumerate the lines of evidence that support plate
movement. (S10ES –Ia-j-36.6)

3. Kumusta kayo?

4. Complete This!
It was in 1912 when a German meteorologist named
Alfred Wegener proposed the Continental Drift Theory. In
this theory, he proposed the existence of a single landmass
which he called Pangaea (which means “all land”).
Take note also that the Pangaea is surrounded by an
ocean called Panthalassa. Wegener emphasized that this
landmass broke apart as continents “drift” away from each
other.

5. Evidences of
Continental Drift Theory

6. The Jigsaw Fit of the Continents
 Continents are once joined
 Impossible to have a perfect “fit” due to
erosion
 1960s - Edward Bullard come up with a
map that continents fit together by
means of continental shelf
 Other landmasses that were noticed to
fit together are India and Antarctica with
Australia; and Eurasia with North
America.

7. Continental
Shelf
Continental Shelf
edge of the
continent
beneath the
ocean

8. Fossil
Evidence
Fossils are
remains of
prehistoric
organisms
preserved in
petrified form,
cast or mold in a
rock

9. Geologic Fit
Rocks in South America
and Africa are continuous
with one another.
Ages of the rocks in these
continents are similar

10. Geologic Features
 Fragments of Old Mountains
align perfectly if continents
are positioned together.
 Mountain ranges that line up
along coastlines terminate
and then reappears again on
another landmass.
 Example: Appalachian
Mountains

11. Paleoclimatic Evidence
 Ancient Climate
 Coal in Antarctica
 Coalfields of the eastern United
States and Europe.
 Layers of similarly aged tillites -
deposits of rock debris from
glaciers.

12. Look back!
What are the evidences of
Continental Drift Theory
based on the Pictures?

13. Thank you!