Download Chapter 9 WS #1

GEOLOGY 12
CHAPTER 9 WS #1
PLATE TECTONICS
Name ____________________
PART A: TECTONIC FEATURES
1. Draw in the asthenosphere, lithosphere and an accretionary prism.
2. Color the diagram below using the figures on pages 192-194 as a guidelines.
3. Add missing labels as necessary.
You should be able to identify and describe all of the following tectonic features.
•
•
•
•
•
•
•
•
•
accretionary prism (p.193)*
asthenosphere / lithosphere (p.178)*
Benioff zone (see p.188)
a convection cell (p.191)
convergent boundary
divergent boundary
hot spot and plume
island arc (p.187)
volcanic mountains (p.187)
•
•
•
•
•
•
•
•
mid-oceanic ridge / spreading ridge / rift zone
paired metamorphic belts (p.193)
trench
subduction zone
transform faults
passive margin (p.270)*
active margin (p.273)
arrows indicating direction of plate movement (p.191)
*not included on diagram
PART B: GEOLOGIC PROCESSES AT PLATE BOUNDARIES
Types of Boundaries
# Complete the following chart by placing check marks in the appropriate columns.
Geologic Process
Type of Plate Boundary
Divergent
Convergent
(ridges, rises, seafloor spreading)
(subduction zones,
colliding plates)
Shear
(transform faults)
1. creation of oceanic crust
2. destruction of oceanic crust
3. thick accumulation of sediment
4. volcanism
5. formation of batholiths
6. creation of fold-fault mountain ranges
7. compression
8. tension
9. shear
10. normal faulting
11. strike-slip faulting
12. reverse and thrust faulting
13. shallow-focus earthquakes only
14. both shallow & deep-focus earthquakes
Chapter 9 WS #1
page 2
PART C: PLATE MOVEMENT
•
You will need a ruler for this activity.
•
Assume this map is to scale. Calculate the rate of movement of the Pacific Plate that
carried the Hawaiian Islands away from the hot spot that is now located located at the
southern tip of the big island of Hawaii.
Use the following formula: Rate (cm/yr) = Distance Traveled (cm)
Age (yr)
_______ my
__________ km
_______ my
D
____________ km
_______ my
C
____________ km
B
A
_______ my
____________ km
Chapter 9 WS #1
page 3
Part D: Plate Tectonics and the Rock Cycle
1. Label the diagram below with the following terms
•
•
•
•
Juan de Fuca Plate
North American Plate
Pacific Plate
Mt. Baker
•
•
•
•
Juan de Fuca Ridge
trench
magma
subducting plate
• Queen Charlotte Fault
• locked zone
• arrows indicating direction
of plate movement
2. Label the location of the Accretionary Prism and the Benioff Zone.
3. Number these steps of the Rock Cycle on the diagram below. Refer to page 192 of the
textbook for additional information.
1. magma
2. sediments
3. heat and pressure
4. extrusive igneous rock
5. intrusive igneous rock
6. sedimentary rock
7. Metamorphic rock
Chapter 9 WS #1
page 4