zuwa nassi da ke ƙasa sannan ku amsa tambayar daga baya a cikin harshe ɗaya kamar nassi: Passage: Tsibiran suna cikin tsarin ilimin ƙasa wanda aka sani da Izu-Bonin-Mariana Arc system, kuma shekarunsu sun fara daga shekaru miliyan 5 a arewa zuwa miliyan 30 a kudu (Guam). Rukunin tsibirin ya taso ne sakamakon gefen yamma na Pacific Plate da ke motsawa zuwa yamma da kuma nutsewa ƙasa da Mariana plate, yankin da ke kan iyakar faranti mai haɗuwa a duniya. Wannan yanki na subduction, a gabashin tsibirin, ya zama sanannen Mariana Trench, mafi girman ɓangaren tekun duniya da mafi ƙarancin ɓangaren farfajiyar ɓawon burodi na duniya. A cikin wannan yanki, bisa ga ka'idar, ruwan da aka kama a cikin zurfin zurfin zurfin Pacific Plate a matsayin serpentinite, yana da zafi ta hanyar yanayin zafi na subduction na itace a lokacin mafi yawan matsin lamba na arewacin Mariana plate, wani yanki wanda shine mafi yawan yankin da ke ƙasa da ke ƙasa da ƙasa, ban da tsibirin Farfajiyar Carolin, inda aka gabatar da yawancin nau'
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