The volcanoes in Indonesia are among the most active of the Pacific Ring of Fire. They are formed due to subduction zones of three main active tectonic plates namely the Eurasian Plate, Pacific Plate, and the Indo-Australian Plate.
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C - (on January 20, 2015 02:56 AM). Find Comcast Xfinity New Customers phone number to contact customer service of Comcast to get official support for solving technical problems and helpline is 800-934-6489 for customer support by comcast xfinity new customers.