CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.
-
Upload
egbert-hancock -
Category
Documents
-
view
215 -
download
0
Transcript of CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.
![Page 1: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/1.jpg)
CH 4 - Intrusives
Are you ready for the test?
![Page 2: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/2.jpg)
What is country rock?
• Existing rock already formed.
![Page 3: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/3.jpg)
What are intrusives?
• Igneous rock formed underground between country rock.
![Page 4: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/4.jpg)
What does concordant mean?
• Parallel to country rock
![Page 5: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/5.jpg)
What does discordant mean?
• Perpendicular to country rock.
![Page 6: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/6.jpg)
4 ways to classify intrusives
• Size
• Shape
• Depth
• Relation to country rock
![Page 7: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/7.jpg)
Most abundant intrusive rock?
• Granite
![Page 8: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/8.jpg)
Why is erosion important to studying intrusives?
• Expose intrusives.
![Page 9: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/9.jpg)
Shallow vs deep intrusives make what type of rocks?
• Shallow – small grained crystals; aphanitic, like basalt
• Deep – large grained crystals; phaneritic, like granite
![Page 10: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/10.jpg)
What are xenoliths?
• Alien rocks
![Page 11: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/11.jpg)
Know real pictures of intrusives.
![Page 12: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/12.jpg)
Name the intrusives:
![Page 13: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/13.jpg)
Name the intrusives:
![Page 14: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/14.jpg)
Know this picture
![Page 15: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/15.jpg)
Use Bowen’s Reaction Series:Use Bowen’s Reaction Series:
• What minerals in what rocks?• What minerals form in what order?• What rocks & minerals come from what magma?• What rocks & minerals are most/least stable?• What minerals form at what temps?• Discontinuous vs continuous branches• Aphanitic vs Phranetic rocks
Rock Textures Physical Conditions
![Page 16: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/16.jpg)
What rocks come from Mafic magma?
• Basalt, Gabbro
![Page 17: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/17.jpg)
What rocks come from Felsic magma?
• Granite, Rhyolite
![Page 18: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/18.jpg)
What rocks come from Intermediate magma?
• Andesite, diorite
![Page 19: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/19.jpg)
What rocks are found at divergent boundaries?
• Mafic - Basalt, Gabbro
![Page 20: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/20.jpg)
What rocks are found at convergent boundaries?
• Intermediate – andesite, diorite
• Felsic – granite, rhyolite
![Page 21: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/21.jpg)
What three factors can lower minerals’ melting points?
• Pressure
• Mixing minerals
• Pressurized Water
![Page 22: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/22.jpg)
What are 4 ways magma can change?
• Differentiation; crystal settling
• Magma mixing
• Assimilation
• Partial Melting
![Page 23: CH 4 - Intrusives Are you ready for the test?. What is country rock? Existing rock already formed.](https://reader033.fdocuments.us/reader033/viewer/2022051417/56649e9d5503460f94b9dd0f/html5/thumbnails/23.jpg)
Be able to identify 9 igneous rocks.
Obsidian Andesite Fine-grained Basalt
Pumice Granite Vesicular basalt
Gabbro Rhyolite Porphorytic Basalt