Igneous Rock Intrusion
Name: ___________________________________________________ Period: _____ Date: __________
Essential Question: How do I identify the different types of igneous rock intrusions?
Instructions: Watch the video or study the diagram and answer the following questions.
1. What kind of rock is country rock usually made of? (choices: igneous, sedimentary, metamorphic)
_____________________________________________________________________________________
2. What do you call a rising magma that turns into an igneous rock? ( choices: pluton, magma diapir)
_____________________________________________________________________________________
3. Why does magma rise?
_____________________________________________________________________________________
_____________________________________________________________________________________
4. What do you call rising magma? ( choices: pluton, magma diapir)
_____________________________________________________________________________________
5. What happens inside the magma as the diapir cools?
_____________________________________________________________________________________
_____________________________________________________________________________________
6. In chart A, what are the two types of intrusions?
_____________________________________________________________________________________
_____________________________________________________________________________________
7. In chart B, what is an anticline?
_____________________________________________________________________________________
_____________________________________________________________________________________
8. in chart C, what are xenoliths?
_____________________________________________________________________________________
_____________________________________________________________________________________
9. What do you call magma that intrudes between layers of sedimentary rocks? (choices: dike, sill)
_____________________________________________________________________________________
10. What is a batholith?
_____________________________________________________________________________________
_____________________________________________________________________________________
11. What forms when magma comes to the surface? ( choices: batholiths, volcano)
_____________________________________________________________________________________
12. What is a laccolith?
_____________________________________________________________________________________
_____________________________________________________________________________________
Multiple Choice: Choose from the 6 types of igneous intrusions to complete the following sentences.
CHOICES: Batholiths, Laccolith, Stock, Volcanic neck, Sill, dike
13. ______________________is an igneous intrusion that moves upward through rock layers
14. _____________________ is an igneous intrusion that cuts across rock layers.
15. _____________________ is a mushroom-shaped igneous intrusion.
16.______________________ is an igneous intrusion of large size.
17. _____________________is a small batholith less than 100 square kilometers.
18. _____________________is the remnants of the hardened lava in the throat of a volcano.
Igneous Intrusions (items number 19-25)
Instructions: Study the picture below and choose the correct word to complete the definitions of the
following igneous rock intrusions.
http://volcanismandplatetectonics.wikispaces.com/Igneous+Intrusions
CHOICES: horizontally, underground, mushroom, Large body, throat of a volcano, vertically, small
19. Pluton - any igneous rock which hardens ______________________.
20. Sill - an igneous intrusion that cuts _________________ rock layers.
21. Dike - an igneous intrusion that cuts _________________ rock layers.
22. Laccolith - a ___________________shaped igneous intrusion.
23. Batholith - _________________ of igneous rock formed beneath the Earth's surface by the
intrusion and solidification of magma.
24. Stock - a __________ batholith less than 100 square kilometers.
25. Volcanic Neck - The remnants of the hardened lava in the ______________________after an
eruption.
Put in order from oldest to youngest. (20 pts.)
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________
_________________________________
http://www.youtube.com/watch?v=A5LdZJiKsVk http://volcanoeruptions.wikispaces.com/Igneous+Intrusions