Presentation Transcript
Mountain Building: Mountain Building Chapter 20
Isostatic Rebound – crust rises as a result of __________________: Isostatic Rebound – crust rises as a result of __________________ This iceberg demonstrates the process of isostatic rebound. removal of mass
Slide3: Folded rock layers produced by compressional forces. This part of the folded mountain shows a __________. syncline
Slide4: Example of new crust being formed at Iceland.
_____ type volcano on the mid-Atlantic ridge. Sheild
Convergent-Boundary Mountains: Convergent-Boundary Mountains The following three slides show mountain types produced when plates move __________. together
Slide6: Ocean-Ocean Convergence Examples: Aleutian Islands, Phillipines,______ Basaltic magma trench Volcanic island arc Japan
Slide7: Ocean-Continental Convergence Examples: ________, Andes Andesitic magma, granitic intrusions volcanic mountains trench metamorphic rock Cascades
Slide8: Continental-Continental Convergence Examples: Himalayas,______________ faults folded mountains igneous intrusions metamorphic and sedimentary rock Appalachians
Nonconvergent-Boundary Mountains: Nonconvergent-Boundary Mountains The next four slides show mountains formed at divergent boundaries (plates moving _____), hot spots, and areas of faulting or uplift. apart
Slide10: Divergent-Boundary Mountain Example: intrusive rock pillow basalts Mid-Atlantic Ridge
Slide11: Volcanic Hot Spot Mountain Example: ______, Galapagos extrusive ingneous rock Hawaii
Slide12: Uplifted Mountains Example: ____________ intrusive igneous rock, less structural deformation Adirondacks
Slide13: Fault-Block Mountains Example: __________, Basin and Range mostly sedimentary rock Grand Tetons
Mountain Building Review: Mountain Building Review The Galapagos Islands formed as a result of a ___________.
The Appalachians are about _________ years old.
The Appalachians are a __________ mountain range.
The Cascades (Mt St Helens, Mt Rainier,…) are a ___________ mountain range with ___________ eruptions. hot spot 600-700 million folded volcanic explosive