nazca and cocos plate boundary type

Rates of motions of the major plates range from less than 1 cm/y to over 10 cm/y. Q. The boundary regions between plates are aptly called plate boundaries. Based upon their motions with respect to one another, these plate boundaries are of three kinds: divergent, convergent, and transform. The Nazca Plate … According to the plate tectonics theory, the 36. Pacific Plate and the Nazca Plate. The northern boundary of the Cocos Plate is the Middle America Trench. Right panel was constructed in GeoMapApp and shows existing multibeam bathymetry data at the western end of the Cocos-Nazca spreading center. Plate boundaries PHILIPPINE TE AFRICAN PLATE COCOS PLATE SCOTIA PLATE ANTARCTIC PLATE INDO-AUSTRALIAN PLATE ARABIAN PLATE EURASIAN PLATE PACIFIC PLATE NORTH AMERICAN PLATE CARIBBEAN PLATE NAZCA PLATE SOUTH AMERICAN PLATE SCOTIA PLATE SOUTH AMERICAN PLATE The Earth’s crust is broken into great blocks called plates. in what direction is the Nazca plate moving? This boundary of the ocean plate corresponds to a small landslide in the lower slope and is also imaged on track line 7a as a step in the plate boundary beneath the slope (see Figure 6b). The islands are thought to be a continuous volcanic arc chain of calc-alkaline composition (Nelson et al, 2011). Location of study area in the equatorial Pacific (white box). Plate Tectonics - is the paradigm that the Earth's lithosphere is divided into a dozen major plates which slide over the asthenosphere in various directions. The Nazca-Antarctic Plate boundary is comprised of the Chile Ridge where new ocean crust is formed. Figure 10.4. Arrows along the boundary between the South American Plate and the Nazca Plate point toward each other, indicating that the boundary between these two plates is a convergent boundary. The Andean mountain-chain are actually not directly ON the the join-line of the Nazca and South American tectonic plates. South American Plate and the Nazca Plate. Nazca Plate. 1 A map showing 15 of the Earth’s tectonic plates and the approximate rates and directions of plate motions. Towards the north the Nazca plate is diverging from the Cocos plate at a rate of 62-42 mm/yr. Assign a colored pencil color to each boundary type in your classification scheme. Part of this volcanic range is a horst due to extreme block-faulting. Each type of plate boundary generates distinct geologic processes and landforms. The trench is a result of a convergent boundary, where the eastern edge of the oceanic Nazca Plate is being subducted beneath the continental South American Plate. At which type(s) of plate boundaries are you likely to have volcanoes? To investigate the mechanism underlying the break-up of the Farallon plate into the Cocos plate and Nazca plate, we analyze the state of stress in the Farallon plate at about 30 m.y. Convergent Boundaries or destructive- Subduction The Cocos-Nazca spreading center offers an opportunity to examine these and related questions. Two seamount ridges within the Nazca Plate enter the subduction zone along this trench: the Nazca Ridge and the Juan Fernández Ridge. Plate borders the North American Plate, the South American Plate, the Nazca Plate and the Cocos Plate. The northern boundary of the Cocos Plate is the Middle America Trench. Geology. What type of boundary is between the Caribbean and Cocos plates. To the northeast it is bounded by the North American Plate and the Caribbean Pl… In four of the five cases, these anomalies have been explained with models of slab window development. By the end of 1967 the Earth’s surface had been mapped into a series of plates (Figure 10.4.1). A triple junction, the Chile Triple Junction, occurs on the seafloor of the Pacific Ocean off Taitao and Tres Montes Peninsula at the southern coast of Chile. The location where two plates meet is called a plate boundary. Plate boundaries are commonly associated with geological events such as earthquakes and the creation of topographic features such as mountains, volcanoes, mid-ocean ridges, and oceanic trenches. The current continental and oceanic plates include: the Eurasian plate, Australian-Indian plate, Philippine plate, Pacific plate, Juan de Fuca plate, Nazca plate, Cocos plate, North American plate, Caribbean plate, South American plate, African plate, Arabian plate, the Antarctic plate, and the Scotia plate. Extend Challenge students to describe each of The eastern edge of the plate is in a subduction zone beneath the South American plate, and this crash has given rise to the Andes Mountains. the overriding plate. Pacific Plate and the South American Plate. 10.4 Plate, Plate Motions, and Plate Boundary Processes. What type of plate boundary is in Chile? At this point, do not try to explain the data; just observe! The Cocos Plate is a relatively small sized, triangular-shaped oceanic plate located just west of Mexico and the Caribbean. transform. Notably, there are two “flat-slab” subduction zones between 2°-15°S and 28°-33°30’S that and are distinguished by the lack of late Miocene to Holocene volcanic activity (Gregory-Wodzicki, 2000) (Figure 3). Explain your answer. The northern side is a divergent boundary with the Cocos Plate, the Galapagos Rise. The Cocos Plate is bounded by several different plates. The Cocos Plate is a young oceanic tectonic plate beneath the Pacific Ocean off the west coast of Central America, named for Cocos Island, which rides upon it. Lecture #28: Plate Tectonics . Learn vocabulary, terms, and more with flashcards, games, and other study tools. View this answer. mixed type is characterized. -The pacific plate Examine the interactive globe. Lightly shade in each tectonic/lithospheric plate with a different color if possible. Another divergent plate boundary is the East Pacific Rise, which separates the massive Pacific plate from the Nazca, Cocos, and North American plates. And this Chile Ridge is subducted beneath the South American Plate at 46 degree south latitude. Cocos plate subduction under the Caribbean plate began at the end of the Tertiary, provoking a generalized orogeny accompanied by strong volcanism. Which features are commonly formed at the plate Peru-Chile Trench and the Andes Mountains formed along the west coast of South America because the South American Plate A) collided with the Nazca Plate To this purpose we use finite element methods and a reconstruction of regional plate boundaries appropriate for 30 m.y. Because of the motion of the plates they can collide, pull apart, or scrap against each other. Task 3 . Discovering Plate Boundaries Dale S. Sawyer Rice University yourselves to about 4-5 boundary types. If the The Nazca Plate, which underlies most of the southeastern Pacific, is being subducted beneath most of the west coast of South America at a rapid rate of 80 to 100 millimetres per year. The scarp of the narrow ridge marks the boundary between the lithosphere formed at the East Pacific Rise and the Cocos- Nazca spreading center. This creates a convergent plate boundary. The southern boundary is a mid-oceanic ridge, the Galapagos Rise. convergent. A) Transform B) Ocean-Ocean Divergent ... in what direction is the cocos plate moving? answer choices . C. What two locations are moving together as a result of plate tectonics? Cocos Plate and the North American Plate. Because the Nazca plate carries dense oceanic crust and the South American plate carries less dense continental crust, the Nazca plate will sink beneath the South American plate. The eastern boundary is a transform fault, the Panama Fracture Zone. A belt of volcanoes extends from northern Panama to western Mexico, and virtually all of the highest mountains in this belt are volcanic. This could be related to the ridge jumps between 14.5 to 7.5 Ma and the northward migration of the Cocos-Nazca spreading centre (CNSC) away from the Galapagos Hot Spot (GHS) [Hey et al., 1977; Hey 1977; Barckhausen et al., 2001].and the lithologic continuity can be inclusive to extend as far as a part of the basement B.P. Vent s and fractures (also called fissure s) in these mid-ocean ridges allow magma and gases to escape into the ocean. The western boundary is another mid-ocean ridge, the East Pacific Rise. These borders are regions of intense seismic activity, including frequent earthquakes, occasional tsunamis, and volcanic eruptions. C) Pacific and Nazca B) Cocos and Caribbean D) Nazca and South American 33. Roughly 3.2 million square kilometers (1.2 million square miles) in area, the Caribbean Plate borders the North American Plate, the South American Plate, the Nazca Plate and the Cocos Plate. Use the table below and the Map Key on the “Types of Plate Boundaries Map” to draw the correct symbols identifying each type of plate boundary. Oceanic plates, such as the Cocos plate, are made up of a type of stone called Continental drift and sea-floor spreading became widely accepted around 1965 as more and more geologists started thinking in these terms. Using the General Plate Boundary Map (figure 1), draw arrows representing the direction of relative plate movement on both sides of the boundaries at the following locations: North American/Pacific (south of Alaska and along U.S. west coast near California) a. b. Pacific/Nazca C. Nazca/South American d. Plate Boundaries: Plate boundaries are the area between the plates where most tectonic activities take place. Subduction zones are marked by deep trenches and overlying chains of volcanoes (the Andes, for example). The Cocos Plate was created approximately 23 million years ago when the Farallon Plate broke into two pieces, which also created the Nazca Plate. (Select all that apply.) Types of Plate Boundaries Map Identification Directions B 1. This movement occurred along which type of plate boundary?

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