Geology of North America's West Coast

Play an AI-generated podcast conversation about this lesson

Which type of mountains are the Andes an example of?

Continental-oceanic collision

Continental-continental collision (correct)

Oceanic-oceanic collision

Oceanic-continental collision

What is the term used to describe the crustal fragments of exotic material that are appended onto a continent during subduction?

Microcontinents

Batholiths

Forearc basins

Terrains (correct)

What is the process where islands or microcontinents get stuck onto a continent during subduction called?

Accretion (correct)

Deposition

Erosion

Sublimation

Which mountain range formed when Pangaea came together?

Appalachians Signup and view all the answers

What is the term for mountain building?

Orogenesis Signup and view all the answers

Which type of mountains result from the steady subduction of lithosphere?

Island Arc Mountains Signup and view all the answers

Which process causes small features to be subducted at convergent plate boundaries?

Subduction Signup and view all the answers

What happens to the melting point of rock when water is present?

It decreases Signup and view all the answers

What happens to the small features that get subducted at convergent plate boundaries?

They get melted Signup and view all the answers

Which type of fault is characterized by vertical movement of the crust?

Normal fault Signup and view all the answers

What type of stress is associated with strike slip faults?

Shear stress Signup and view all the answers

Which fault is an example of a strike slip fault?

San Andreas Fault Signup and view all the answers

Which type of convergence is exemplified by the Andes Mountains?

Oceanic-continental convergence Signup and view all the answers

What type of rock is formed at the core of mountain chains formed by subduction?

Igneous rock Signup and view all the answers

What is the initial stage of a convergent plate boundary called?

Passive margin Signup and view all the answers

During the break of Pangaea, which plate began to subduct under North America?

Farallon Plate Signup and view all the answers

What is the name of the plate that is currently off the coast of California?

Pacific Plate Signup and view all the answers

What is the name of the plate that is left of the Farallon Plate?

Juan de Fuca Plate Signup and view all the answers

Which type of mountain building exhibits deformation of a thick sequence of sedimentary rock called a golden thrust belt?

Appalachian type Signup and view all the answers

Which mountain range is similar to the Appalachian Mountains and is found in northern Europe?

Himalayan Mountains Signup and view all the answers

Which process takes place over millions of years and causes mountain ranges to erode away?

Erosion Signup and view all the answers

What happens to the height of mountain ranges as they erode away?

They decrease Signup and view all the answers

What is the force that pushes up mountain ranges called?

Uplift Signup and view all the answers

What is the point of isostacy?

To maintain balance between gravity and uplift Signup and view all the answers

How long does the process of crustal deformation usually take?

Thousands or millions of years Signup and view all the answers

Which two continents collided to form the Appalachian Mountain range?

Africa and North America Signup and view all the answers

What is the name of the orogeny that formed the southern part of the Appalachian Mountain range?

Allegheny orogeny Signup and view all the answers

What principle explains why continental crust floats higher than oceanic crust in the mantle?

Isostasy Signup and view all the answers

What is the term for the adjustment of the crust due to weight being added or removed?

Isostatic adjustment Signup and view all the answers

What is the term for the rebound of the crust after the melting of a large ice sheet?

Isostatic rebound Signup and view all the answers