Major Geological Events
description
Transcript of Major Geological Events
![Page 1: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/1.jpg)
Major Geological EventsCaused by
Plate Tectonics
![Page 2: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/2.jpg)
Types of Boundaries• Divergent
― Plates move apart• Convergent
― Plates come together • Transform
― Plates slide horizontally past each other
![Page 3: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/3.jpg)
Divergent Structures• New crust is formed as plates
pull apart• Land features include:
― Mid-Ocean Ridges Ex. - Mid-Atlantic Ridge
― Rift Valleys Ex. - African Rift Valley
― Earthquakes
![Page 4: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/4.jpg)
Mid–Ocean Ridge (Location of Sea Floor Spreading)
![Page 5: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/5.jpg)
Sea Floor Spreading (Mid-Ocean Ridge)
OlderOlderYounger
Divergent Structure
![Page 6: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/6.jpg)
Rift Valley
Divergent Structure
![Page 7: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/7.jpg)
Convergent Boundaries• Crust is destroyed and recycled back into the
mantle• Three types of convergent collisions• Features include:
― Trenches – Mariana Trench― Volcanic Arc (Volcanic Mountains) – Andes
mountains― Mountain Ranges – Himalayan Mountains― Earthquakes
![Page 8: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/8.jpg)
Subduction
• Result of convergent boundary• A more dense plate slides under a less dense
plate and sinks into the mantle.
• Features include:― Oceanic-Oceanic = Trenches― Oceanic-Continental = Mountain
Ranges
![Page 9: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/9.jpg)
Subduction Examples
![Page 10: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/10.jpg)
Convergent Boundary• Oceanic-Oceanic
• Land Features – Trench and Island Arc
Oceanic-Oceanic convergence
![Page 11: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/11.jpg)
Convergent Boundary• Oceanic-Continental
• Land Features – Trench and Volcanic Arc (Volcanic Mountains)
Oceanic-Continental convergence
![Page 12: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/12.jpg)
Convergent Boundary• Continental-Continental
• Land Features – Folded Mountains
Continental-Continental convergence
![Page 13: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/13.jpg)
Mountain Ranges
![Page 14: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/14.jpg)
Transform Fault Structures• Crust is neither destroyed nor created• Can occur between two oceanic plates
or oceanic-continental plates• Features include:
― Earthquakes― Fault line – San Andreas Fault
![Page 15: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/15.jpg)
Transform Boundary• Oceanic-Oceanic
• Land Feature – Fault Line
![Page 16: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/16.jpg)
Transform BoundarySan Andreas Fault Line
![Page 17: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/17.jpg)
Transform Boundary• Continental-Continental
• Land Features – Fault Line
![Page 18: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/18.jpg)
Earthquakes – All Boundaries
![Page 19: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/19.jpg)
Volcanoes
![Page 22: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/22.jpg)
Plate Boundaries
![Page 23: Major Geological Events](https://reader036.fdocuments.in/reader036/viewer/2022062222/56816149550346895dd0c6a8/html5/thumbnails/23.jpg)
Plate Movement