0-9 a b c d e f g h i j k l m n o p q r s t u v w y z search

TeachMeFinance.com - explain Island Arc Volcanoes Island Arc Volcanoes The term 'Island Arc Volcanoes' as it applies to the area of volcanos can be defined as '　　 In a typical 'island-arc' environment, volcanoes lie along the crest of an arcuate, crustal ridge bounded on its convex side by a deep oceanic trench. The granite or granitelike layer of the continental crust extends beneath the ridge to the vicinity of the trench. Basaltic magmas, generated in the mantle beneath the ridge, rise along fractures through the granitic layer. These magmas commonly will be modified or changed in composition during passage through the granitic layer and erupt on the surface to form volcanoes built largely of nonbasaltic rocks'. Previous 5 Terms: iseidomal isentropic Isentropic Analysis Isentropic Lift Isentropic Surface Next 5 Terms: islandic ISO Isobar isobar Isobaric Chart About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.