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Why is the boundary of the Narca plate along the east pacific rise a divergent boundary rather than a convergent one?
The boundary of the Nazca Plate along the East Pacific Rise is a divergent boundary because it is where tectonic plates move apart, allowing magma to rise and create new oceanic crust. This process of seafloor spreading occurs as the Nazca Plate moves away from the Pacific Plate, leading to the formation of new material at the mid-ocean ridge. In contrast, convergent boundaries involve plates moving toward each other, typically leading to subduction or mountain building, which is not the case at the East Pacific Rise.
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Based on distribution of earthquake epicenters Why is nazca plate along east pacific rise a divergent boundary rather than convergant boundary?
The Nazca Plate along the East Pacific Rise is classified as a divergent boundary because it is moving away from the Pacific Plate, creating new oceanic crust at the mid-ocean ridge. The distribution of earthquake epicenters in this region shows shallow-focus earthquakes primarily associated with tectonic activity at divergent boundaries, where magma rises to fill the gap created by the separating plates. In contrast, convergent boundaries are characterized by subduction or collision, leading to deeper and more intense seismic activity, which is not observed at the East Pacific Rise. Thus, the geological and seismic evidence supports the classification of this area as a divergent boundary.
Does Terrane accretion generally occurs along a divergent boundary between a continental plate and an oceanic plate?
Terrane accretion typically occurs along a convergent boundary where two tectonic plates collide, rather than along a divergent boundary where they move apart. This process involves the collision and subsequent attachment of different crustal blocks or terranes to a continental margin or another terrane.
What are two real world examples of a divergent boundary?
The mid-oceanic ridge in the Atlantic Ocean is one. MID OCEAN RIDGES ARE NOT CONVERGENT BOUNDARIES, but rather are divergent boundaries. This map shows the tectonic plate boundaries. With the help of the legend, you should see where all the divergent, spreading boundaries are: http://www.globalchange.umich.edu/globalchange1/current/lectures/evolving_earth/tectonic_map.jpg Like the word "convergent" implies, convergent boundaries occur where tectonic plates converge, or come together. There are convergent boundaries on the west coast of South America, along the coast of Oregon and Washington in the Pacific Northwest of the US, along the southern edge of the Aleutian Islands of Alaska, along the eastern edge of Japan. MID OCEAN RIDGES ARE NOT CONVERGENT BOUNDARIES, but rather are divergent boundaries.
With what type of plate boundary are the following places or features associated himalayas aleutian islands red sea andes mountains san andreas fault iceland japan mount st helen's?
(1) Himalayas -- Convergent between continental-continental collision of Indo-Australian and Eurasian plates. (2) Aleutian islands -- Convergent between oceanic-oceanic collision of Pacific plate beneath North American plate. (3) Andes Mountains -- Convergent between oceanic-continental collision of Pacific plate beneath South American plate. (4) San Andreas Fault (Zone) -- Transform boundary (sometimes called a conservative boundary) between Pacific and North American plates. (5) Iceland -- Divergent boundary along the Mid-Atlantic Ridge arm of the Mid-Ocean Ridge, separating North America to the west and Eurasia to the east. *Also* a large hot spot, which is what brought Iceland to the surface, rather than remaining undersea. (6) Japan -- Convergent boundary between Pacific plate beneath North American plate (yes, Japan is on the North American plate). (7) Mount St. Helens -- Convergent boundary between Juan de Fuca beneath North Americna plate. Convergent boundaries build mountains (technically divergent do too, but no one ever thinks about them -- but they're lots and lots of small volcanoes) Continental-continental --> crust slams together like two buses, neither plate can subduct, rock squirts up and out, you get the Himalayas (Indo-Australian and Eurasia) Oceanic-oceanic --> crust meets and the older, denser, cooler one subducts. It reaches a depth that it melts, the new magma rises to the surface, pops out as a volcanic lava flow. Thousands of flows later, you have dry volcanic islands poking out of the surface. Because this is happening along a plane, you get a whole chain - an volcanic island arc like the Aleutians (Pacific plate below North American plate) Oceanic-continental --> crust meets and the oceanic will *always* subduct. Just like oceanic-oceanic, it melts and rises and pops out, but this time on a dry continental surface. Again, thousands of flows later, you have a volcano. Again, as it's on a plane, you get a whole mountain range.
What type of plate boundary is involved in volcano kilauea?
None. Kilauea and all the Hawaiian volcanoes were created by a hot spot rather than a plate boundary.
Why is the boundary of the Nazca Plate considered divergent rather than convergent?
The Nazca plate has more than one boundary. The western and northern boundaries are divergent as the plates are moving apart from one another. However, the Nazca plate's eastern boundary is convergent as it collides with and subducts under the South American Plate.
Is new crust created at a convergent boundary?
No, new crust is not created at a convergent boundary. Instead, at convergent boundaries, two tectonic plates come together and one plate is usually forced beneath the other in a process called subduction. This process can lead to the destruction of crust rather than the creation of new crust.
Based on distribution of earthquake epicenters Why is nazca plate along east pacific rise a divergent boundary rather than convergant boundary?
The Nazca Plate along the East Pacific Rise is classified as a divergent boundary because it is moving away from the Pacific Plate, creating new oceanic crust at the mid-ocean ridge. The distribution of earthquake epicenters in this region shows shallow-focus earthquakes primarily associated with tectonic activity at divergent boundaries, where magma rises to fill the gap created by the separating plates. In contrast, convergent boundaries are characterized by subduction or collision, leading to deeper and more intense seismic activity, which is not observed at the East Pacific Rise. Thus, the geological and seismic evidence supports the classification of this area as a divergent boundary.
Does Terrane accretion generally occurs along a divergent boundary between a continental plate and an oceanic plate?
Terrane accretion typically occurs along a convergent boundary where two tectonic plates collide, rather than along a divergent boundary where they move apart. This process involves the collision and subsequent attachment of different crustal blocks or terranes to a continental margin or another terrane.
What are two real world examples of a divergent boundary?
The mid-oceanic ridge in the Atlantic Ocean is one. MID OCEAN RIDGES ARE NOT CONVERGENT BOUNDARIES, but rather are divergent boundaries. This map shows the tectonic plate boundaries. With the help of the legend, you should see where all the divergent, spreading boundaries are: http://www.globalchange.umich.edu/globalchange1/current/lectures/evolving_earth/tectonic_map.jpg Like the word "convergent" implies, convergent boundaries occur where tectonic plates converge, or come together. There are convergent boundaries on the west coast of South America, along the coast of Oregon and Washington in the Pacific Northwest of the US, along the southern edge of the Aleutian Islands of Alaska, along the eastern edge of Japan. MID OCEAN RIDGES ARE NOT CONVERGENT BOUNDARIES, but rather are divergent boundaries.
With what type of plate boundary are the following places or features associated himalayas aleutian islands red sea andes mountains san andreas fault iceland japan mount st helen's?
(1) Himalayas -- Convergent between continental-continental collision of Indo-Australian and Eurasian plates. (2) Aleutian islands -- Convergent between oceanic-oceanic collision of Pacific plate beneath North American plate. (3) Andes Mountains -- Convergent between oceanic-continental collision of Pacific plate beneath South American plate. (4) San Andreas Fault (Zone) -- Transform boundary (sometimes called a conservative boundary) between Pacific and North American plates. (5) Iceland -- Divergent boundary along the Mid-Atlantic Ridge arm of the Mid-Ocean Ridge, separating North America to the west and Eurasia to the east. *Also* a large hot spot, which is what brought Iceland to the surface, rather than remaining undersea. (6) Japan -- Convergent boundary between Pacific plate beneath North American plate (yes, Japan is on the North American plate). (7) Mount St. Helens -- Convergent boundary between Juan de Fuca beneath North Americna plate. Convergent boundaries build mountains (technically divergent do too, but no one ever thinks about them -- but they're lots and lots of small volcanoes) Continental-continental --> crust slams together like two buses, neither plate can subduct, rock squirts up and out, you get the Himalayas (Indo-Australian and Eurasia) Oceanic-oceanic --> crust meets and the older, denser, cooler one subducts. It reaches a depth that it melts, the new magma rises to the surface, pops out as a volcanic lava flow. Thousands of flows later, you have dry volcanic islands poking out of the surface. Because this is happening along a plane, you get a whole chain - an volcanic island arc like the Aleutians (Pacific plate below North American plate) Oceanic-continental --> crust meets and the oceanic will *always* subduct. Just like oceanic-oceanic, it melts and rises and pops out, but this time on a dry continental surface. Again, thousands of flows later, you have a volcano. Again, as it's on a plane, you get a whole mountain range.
What type of plate boundary is involved in volcano kilauea?
None. Kilauea and all the Hawaiian volcanoes were created by a hot spot rather than a plate boundary.
Ask us What force is present at a divergent boundary?
A divergent boundary are two tectonic plates that are moving away from each other, rather than into each other. This can cause rifts, valleys, and ocean ridges.
Is subduction common at divergent plate boundaries?
No, subduction is not common at divergent plate boundaries. Divergent plate boundaries are characterized by plates moving away from each other, which creates new oceanic crust. Subduction occurs at convergent plate boundaries where plates collide and one descends beneath the other.
Does divergent plate boundarys produce the largest earthquakes?
Divergent plate boundaries typically produce smaller earthquakes compared to convergent plate boundaries, where tectonic plates collide. At divergent boundaries, tectonic plates move apart, creating new crust, which generally results in less intense seismic activity. In contrast, convergent boundaries often involve subduction, leading to significant stress accumulation and larger earthquakes. Therefore, the largest earthquakes are generally associated with convergent, rather than divergent, plate boundaries.
Do convergent plate boundaries involve the process of rifting?
Yes, convergent plate boundaries involve the process of rifting where tectonic plates move apart, leading to the formation of new oceanic crust. This process typically occurs at divergent plate boundaries, such as mid-ocean ridges, rather than at convergent plate boundaries where plates collide or subduct.
Is mount shasta a divergent plate boundary volcano?
The Juan de Fuca plate, which is subducting under the North American plate. Mount Shasta is at the southern end of the same Cascade volcanic range that includes Mount St. Helens and extends northward into British Columbia, Canada.
