Where is Central East Pacific Rise?
The Gulf of California sits at the northernmost end of an immense underwater mountain range called the East Pacific Rise, which extends across the Southeastern Pacific Ocean almost to Antarctica.
What is happening at the East Pacific Rise?
The crest of the East Pacific Rise is a centre of seafloor spreading; new oceanic crust in the form of basaltic lava is welling up along the crest, cooling, and moving away from the crest in either direction.
How are the Mid-Atlantic Ridge and the East Pacific Rise the same?
Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor. The Mid-Atlantic Ridge, for instance, separates the North American plate from the Eurasian plate, and the South American plate from the African plate. The East Pacific Rise, on the other hand, is a fast spreading center.
Is the East Pacific Rise deeper than the Mid-Atlantic Ridge?
The Mid-Atlantic Ridge runs down the center of the Atlantic Ocean. The rift valley is 1 to 3 km deep, about the depth and width of the Grand Canyon. In contrast, the East Pacific Rise spreads fast at rates of 6 to 16 cm per year (more than 20 cm per year in the past).
Is Pacific Ocean spreading?
Seafloor-spreading rates are much more rapid in the Pacific Ocean than in the Atlantic and Indian oceans. At spreading rates of about 15 cm (6 inches) per year, the entire crust beneath the Pacific Ocean (about 15,000 km [9,300 miles] wide) could be produced in 100 million years.
What direction is the Pacific Ocean floor moving?
The Pacific Plate is moving to the northwest at a speed of between 7 and 11 centimeters (cm) or ~3-4 inches a year. The North American plate is moving to the west-southwest at about 2.3 cm (~1 inch) per year driven by the spreading center that created the Atlantic Ocean, the Mid Atlantic Ridge.
Why is the Pacific spreading faster than the Atlantic?
Faster spreading ridges like the northern and southern East Pacific Rise are “hotter,” meaning more magma is present beneath the ridge axis and more volcanic eruptions occur. Because the plate under the ridge crest is hotter scientists think that the plate responds to the divergent spreading process more fluidly.
What are the 3 plates that border the East Pacific Ridge?
The East Pacific Rise is a mid-oceanic ridge, a divergent tectonic plate boundary located along the floor of the Pacific Ocean. It separates the Pacific Plate to the west from (north to south) the North American Plate, the Rivera Plate, the Cocos Plate, the Nazca Plate, and the Antarctic Plate.
Why is the Pacific ocean shrinking?
Why the Pacific Ocean is shrinking Due to the presence of subduction zones, the destruction of old crust balances the formation of new seafloor, slowing the growth of the Pacific Ocean. This, coupled with the expansion of the Atlantic Ocean, is why the Pacific Ocean is getting smaller.
What direction is Hawaii moving?
The Hawaiian Islands are moving to the northwest.
Where is the East Pacific Rise located?
The East Pacific Rise, travelling South from the Gulf of California. The East Pacific Rise is a mid-oceanic ridge, a divergent tectonic plate boundary located along the floor of the Pacific Ocean.
What type of plate boundary is the East Pacific Rise?
A mid-oceanic ridge at a divergent tectonic plate boundary on the floor of the Pacific Ocean. The East Pacific Rise, extending south from the Gulf of California. The East Pacific Rise is a mid-oceanic ridge, a divergent tectonic plate boundary located along the floor of the Pacific Ocean.
Where does the East Pacific Rise merge with the southeast Indian Ridge?
The southern extension of the East Pacific Rise (called the Pacific-Antarctic Ridge) merges with the Southeast Indian Ridge at the Macquarie Triple Junction south of New Zealand .
What is the rate of seafloor spreading at the East Pacific Rise?
The crest of the East Pacific Rise is a centre of seafloor spreading; new oceanic crust in the form of basaltic lava is welling up along the crest, cooling, and moving away from the crest in either direction. Offshore from Chile and Peru the rate of spreading is about 6.3 inches (16 cm) per year,…