Before we talk about processes at plate boundaries, its important to point out that there are never gaps between plates. Crater Lake National Park has the 9th deepest lake in the world. The other piece became the Nazca plate.The Cocos plate also broke into two pieces, creating the small Rivera plate. Solved Unclick all the other layers you've been using, and - Chegg Katmai National Park and Preserve lies where the worlds largest volcanic event of the 20th Century occurred. And at times, lower-silica components of their magma chambers erupt, producing basalt lava flows as well as cinders and volcanic bombs. Is the Cocos Plate convergent or divergent? - Study.com The roots of ancient mountain belts, which are present along the eastern margin of North America, the western margin of Europe, and the northwestern margin of Africa, show that these land masses once collided with each other to form a mountain chain, possibly as big as the Himalayas. Taiwan area is the collision boundary between the Philippine Sea plate and the Eurasia plate, which has complex interaction, attracting much attention[3033]. The low region between the two mountain ranges is the Puget Sound area of Washington and the Willamette Valley in Oregon. The Pacific plate is subducting beneath the Philippine Sea plate to the east while the west/northwestern part of the Philippine Sea plate is subducting beneath the continental Eurasian plate. The eastern boundary is a transform fault, the Panama Fracture Zone. (Note that spreading rates are typically double the velocities of the two plates moving away from a ridge.). The eruption of Aniakchak Volcano about 3,500 years ago rivals the eruption and collapse of Mt. When mixed with water from glaciers, snowmelt, and streams, these materials can make very dense, fast-moving volcanic mudflows (known sometimes by the Indonesian term lahar). A sudden unlocking could produce an earthquake every bit as big as the one that occurred in Alaska in 1964, when a similar subduction zone boundary snap occurred. Pangea began to rift apart along a line between Africa and Asia and between North America and South America at around 200 Ma. As the basalt magma rises up through the thick continental crust of North America, it melts some of that rock, too. Examples of ocean-ocean convergent zones are subduction of the Pacific Plate beneath the North America Plate south of Alaska (Aleutian Islands) and beneath the Philippine Plate west of the Philippines, subduction of the India Plate beneath the Eurasian Plate south of Indonesia, and subduction of the Atlantic Plate beneath the Caribbean Plate (see Figure \(\PageIndex{1}\)).
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cocos plate and north american plate boundary type