There are several types of mountains formed by different geological processes. Volcanic mountains such as shield volcanoes and composite volcanoes are formed by volcanic eruptions. Fault-block mountains like the Sierra Nevada range are formed through normal faulting and tension forces. Folded mountains like the Appalachians are formed by reverse faults and compression forces pushing up layers of rock. Complex mountains contain a mixture of these features and can include volcanoes, folding, and different types of faults.
12. Alternating normal faults lead to a characteristic pattern called a Horst and Graben system. An area under tension will often have Multiple mountain ranges as a result.
13. Basin and range province: tilted fault-block mountains in Nevada. The results of a horst and graben system. Nevada is under tension Because of rising magma which is unzipping the system, all the way From Baja California Sierra Nevada and Wasatch Ranges part of this system
14. REVERSE FAULTS: Hanging wall moves up relative to footwall Result of compression: plates colliding Two types: low-angle or thrust faults, and high-angle reverse faults Individual layers can move 100’s of kilometers Alps are a great example