Faults & Folds
This type of fault occurs when tensional forces pull rocks apart and the hanging wall falls down relative to the footwall.
What is a normal fault?
This California national park is home to the largest diameter trees in the world and features glaciated granite landscapes.
What is Sequoia National Park?
This is the first of three stages of mountain building, involving deposition of sedimentary or volcanic rock.
What is accumulation?
The dominant rock type at Sequoia and Kings Canyon National Parks, originating from a large batholith in the Mesozoic Era.
What is granite?
These sharp ridges and peaks are glacial features found at Grand Teton National Park.
What are aretes and horns?
When rocks are folded upward in an arch, this structure is formed.
What is an anticline?
The Snake River runs through this Wyoming park known for its fault block mountains.
What is Grand Teton National Park?
This mountain-building stage causes folding and faulting while accumulation occurs.
What is the orogenic stage?
This foliated metamorphic rock with planes of weakness called slaty cleavage makes up the Anakeesta Formation in Great Smoky Mountains.
What is slate?
These form at the base of mountains in the Great Basin where stream gradient changes abruptly from steep to flat.
What are alluvial fans?
The actual surface along which rock displacement occurs is called this.
What is a fault plane?
This Arkansas park's groundwater is heated by the friction of faults, though the water doesn't have much dissolved in it.
What is Hot Springs national park?
This mountain building event occurred in the Cenozoic Era and formed the Grand Tetons.
What is the Laramide Orogeny?
This rock type found at Hot Springs, Arkansas, is a form of chert that was deposited in the Paleozoic Era.
What is novaculite?
These isolated rock formations, whose name means 'island rock,' are found at Joshua Tree National Park.
What are inselbergs?
At Grand Teton National Park, the hanging wall was displaced at least this many feet down.
What is 30,000 ft?
Located in the Blue Ridge Province, this Virginia park features mostly Precambrian crystalline rocks thrust over Paleozoic sedimentary rocks.
What is Shenandoah National Park?
The addition of exotic terranes to a continental land mass, common in California, Oregon, Washington, and Maine.
What is tectonic accretion?
At Redwood National Park, this is the mixture of diverse materials scraped off the top of a subducting oceanic plate.
What is melange?
This is the trace of a fault on the land surface, visible at Death Valley along with sand dunes.
What is a fault scarp?
These are fractures or cracks in the earth's surface at which there is no displacement.
What are joints?
This coastal California park features the world's tallest trees and contains 10 miles of sedimentary rock deposits representing accretionary terrain.
What is Redwood National Park?
This stable, interior portion of a continent is usually composed of very old crystalline rocks.
What is a craton?
This core of low-grade Precambrian and Paleozoic rocks shows extensive metamorphism, folding, and low-angle thrust faulting in the Basin and Range.
What is metamorphic core complex?
These coastal features at Redwood National Park are remnants of wave erosion.