What are two possible scenarios for how accretion and continental growth happen?
What will be an ideal response?
Answer: 1. Where any piece of "nonsubductable" continental crust, usually thick continental crust, or volcanic-arc crust enters a subduction zone at the edge of a continent, it is thrusted onto the edge of the continent.
2. If a continent follows subducting oceanic lithosphere into a trench, the buoyant continent cannot subduct and instead collides with the volcanic arc on the overriding plate. Then, a new subduction zone forms that faces in the opposite direction. The arc transfers from one plate to another and becomes part of the continent.
You might also like to view...
The Kyoto Protocol marks the most prominent attempt of the global community to take comprehensive action to
A) reduce greenhouse gas emissions. B) eliminate trade in hazardous wastes. C) reduce risks from nuclear energy. D) save the world's remaining rainforests.
How a species "makes its living" is called its
A) habitat B) niche C) biota D) ecology
The spread of an underlying principle, such as a new technological innovation, is an example of
A) spatial interaction. B) expansion diffusion. C) space-time compression. D) stimulus diffusion. E) distance decay.
Which of the following describes the advantages of wind power over solar?
A. wind turbines are easier to install than solar panels. B. wind works better in high-density coastal developments. C. wind turbines can generate power at night and on cloudy days. D. wind generated electricity is carbon-free. E. less public resistance to wind turbines than solar panels.