Tutor profile: Amanda E.
How do the tectonics of a continental margin affect the dimensions of a continental shelf?
Passive continental margins have relatively wide continental shelves (the largest continental shelves) and relatively thin continental lithosphere because of extension that occurs during rifting. Active margins have relatively narrow continental shelves. As an example, the California coast continental margin and shelf is relatively narrow because it is near an active transpressional transform plate boundary.
Subject: Environmental Science
Where would you find a gelisol soil?
Gelisols are tundra soils. They contain a layer of permafrost and are found in polar regions.
Subject: Earth Science
What is the difference between a stratovolcano and a shield volcano?
A stratovolcano usually has steeper topography than a shield volcano. They are usually created from lavas of intermediate and felsic composition because these types of lavas are more viscous. Shield volcanos have lower relief. A shield volcano is usually created from lavas of mafic composition which are less viscous.
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