The Legacy Of Krakatau And Its Famous Eruption Essay

2227 Words Dec 9th, 2016 9 Pages
I. Introduction
Krakatau is a former stratovolcano that is located within the Sunda Strait between Java and Sumatra. The most popular and logical theory for the origin of its name is that it was adapted from the Sanskrit word “Karkata”, justification being that Rakata is cited as meaning crab in the old Javanese language (Wilson, 1999). The origin of this volcano is perhaps first noted in the Javanese Book of Kings in 416 A.D. as a “thundering sound” in Kapi, a westward province of Java. Despite this reference, no geologic evidence of an eruption has been reported of that time. It is believed that during this time period the eruption left the three islands that we know of today. This paper will explore the legacy of Krakatau and its famous eruption in 1883, and its “daughter” and memento to mankind, Anak Krakatau.

II. Formation and Plate Tectonics
Krakatau is located in the Pacific, 6°S, 106°E, with a summit elevation of 2,668 feet, and lies within the infamous Ring of Fire (Oregon State). Volcanoes located along the boundaries of plates are mostly subduction zones, creating a volatile mix of water and magma. As magma pushes itself up through to the crust, rising when water is trapped within hydrated minerals as well as in basalt are transported by subduction, water is then removed from the source and lowers the melting point of the magma, allowing the magma to emerge and form a volcano. What makes stratovolcanoes like Krakatau unique are the steep slopes and highly…

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