Which term is described as a seamount with a flattened top continental shelf deep sea trenches Guyots abyssal plains?
Which term is described as a seamount with a flattened top continental shelf deep sea trenches Guyots abyssal plains?
Answer: The correct answer is D. Guyots!
What is the definition of seamounts?
A seamount is an underwater mountain formed by volcanic activity. Seamounts — undersea mountains formed by volcanic activity — were once thought to be little more than hazards to submarine navigation.
How does a seamount form?
Near subduction zones, plates collide, forcing ocean crust down toward Earth’s hot interior, where this crustal material melts, forming magma that rises buoyantly back to the surface and erupts to create volcanoes and seamounts.
How do Guyots and seamounts differ?
What is the difference between a seamount and a guyot? A seamount is a submerged volcanic peak that hasn’t ever reached ocean’s surface. Guyots are once active, flat, topped volcanoes that used to be above the ocean surface but the tap was eroded away and it is now submerged.
Why do Tablemounts have flat tops?
Some seamounts are formed from magma rising at a divergent boundary, and as the plates move apart, the seamounts move with them, which can result in a seamount chain. As this happens, the top of the seamount can become eroded flat, and these flat-topped seamounts are then called tablemounts or guyots.
Where are Guyots formed?
Guyots are usually found in deep ocean basins. They can form a chain of seamounts as the ocean plate of the Earth’s crust moves slowly over a hot spot that remains stationary beneath the plate. One of these is the Hawaiian–Emperor seamount chain that includes the Hawaiian Islands and many guyots.
What are Guyots formed by?
A guyot, or seamount, is an undersea mountain. Seamounts are formed by volcanic activity and can be taller than 10,000 feet . They can be isolated or part of large mountain chains.
Why are Guyots formed?
But as soon as a volcano breaches the sea surface, waves and other sub-aerial processes (wind, rainfall, weathering) will cause erosion of the volcano. Over time, these processes will erode the flanks and top of the seamount/island, eventually forming a flat shelf to form a guyot.
How does a flat-topped seamount called a Guyot form?
Guyots are seamounts that have built above sea level. Erosion by waves destroyed the top of the seamount resulting in a flattened shape. Due to the movement of the ocean floor away from oceanic ridges, the sea floor gradually sinks and the flattened guyots are submerged to become undersea flat-topped peaks.
What is the general shape of a Tablemount?
A seamount is a volcano with a cone-shaped top, whereas a tablemount is a volcano with a flattened top.
What are Guyots named after?
Guyots were first recognized in 1945 by Harry Hammond Hess, who collected data using echo-sounding equipment on a ship he commanded during World War II. His data showed that some undersea mountains had flat tops. Hess called these undersea mountains “guyots,” after the 19th-century geographer Arnold Henry Guyot.
What are the three largest Guyots?
The largest three guyots are all in the North Pacific: the Kuko Guyot (estimated 24,600 km2), Suiko Guyot (estimated 20,220 km2) and the Pallada Guyot (estimated 13,680 km2).
What is a seamount quizlet?
What is a seamount? An active volcano that occurs along the crest of the mid-ocean ridge. Seamounts subside as tectonic plates move. Coral reefs grow away from the seamount in order to stay near the sunlight.
Which geologic features are associated with divergent boundaries?
Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the process of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges are not as violent as they are at convergent plate boundaries.
Which geologic features are associated with convergent boundaries quizlet?
Which geologic features are associated with convergent boundaries? Ocean trenches and volcanoes.
Is Japan a volcanic island arc?
Japan’s volcanoes are part of five volcanic arcs. The arcs meet at a triple junction on the island of Honshu. The Southwest Honshu Arc and the Ryukyu Arc formed by the subduction of the Philippine Plate under the Eurasian Plate.
Is Japan a subduction zone?
Japan has been situated in the convergent plate boundary during long geohistorical ages. This means that the Japanese islands are built under the subduction tectonics. The Japanese islands are characterized as the grown-up continental margin formed by the subduction of the oceanic plate.
Which side of Japan has deeper earthquakes?
The Japan Trench is an oceanic trench part of the Pacific Ring of Fire off northeast Japan. It extends from the Kuril Islands to the northern end of the Izu Islands, and is 8,046 metres (26,398 ft) at its deepest.
Is Iceland a convergent boundary?
The tectonic plates whose turbulent interactions formed Iceland, are the Eurasian tectonic plate and the North American tectonic plate. Spanning the Mid-Atlantic Ridge, Iceland emerged as a result of the divergent, spreading, boundary between these two plates and the activity of Iceland´s own hotspot or mantle plume.
What tectonic plate is Tokyo Japan on?
Pacific Plate
Is Tokyo on a tectonic plate?
Tokyo is uniquely located where three tectonic plates converge, a setting known as a “triple-junction.” Both the Philippine Sea and Pacific plates are shoved, or subducted, beneath Tokyo, causing megathrust earthquakes on multiple plate interfaces, as well as shallow crustal quakes, and deep earthquakes within the …
How did tsunami happen in Japan 2011?
A magnitude 9.0 earthquake struck in the Pacific Ocean off the northeast coast of the Tōhoku region of Japan’s Honshu island on March 11, 2011. The Great East Japan Earthquake — the name given to the event by the Japanese government — triggered a massive tsunami that flooded more than 200 square miles of coastal land.