 | Mike Ridout, Wendy Keeling - Juvenile Nonfiction - 2002 - 542 pages
...number of volcanoes may reach the surface to form a string of islands called an island arc, eg Japan. In places where a plate is particularly thin, magma...shield volcano will be formed like those on Hawaii. At a constructive margin where two plates are moving apart new magma can reach the surface through... | |
 | Simon Ross - Natural disasters - 1998 - 102 pages
...volcanoes may reach the surface to form a string of islands called an island arc Example: The Philippines In places where a plate is particularly thin, magma...called a 'hot spot'. A shield volcano will be formed. Hawaii Where two plates are moving Sometimes destructive margins apart, new magma can reach the surface... | |
 | David Payne, Sue Jennings - Juvenile Nonfiction - 2002 - 272 pages
...magma forces its way up to the surface to form a volcano. Magma In places where a plate is particulary thin, magma may be able to escape to the surface. Such a place is called a 'hot spot'. Magma At a constructive margin where two plates are moving apart new magma can reach the surface through... | |
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At a constructive margin where two plates are moving apart new magma can reach the surface through the gap. Volcanoes forming along this crack create a submarine mountain range called an ocean ridge, eg Mid-Atlantic ridge. 