What is the continental margin quizlet?
What is the continental margin quizlet?
Continental margin. the zone of the ocean floor that separates the thin oceanic crust from thick continental crust.
What is a continental margin and how is it created?
Continental margins refer to the region of transition from the land to the deep seafloor, i.e. between continental and oceanic crust . In an active continental margin , the boundary between the continent and the ocean is also a tectonic plate boundary, so there is a lot of geological activity around the margin.
What parts of the seafloor make up the continental margin?
The continental margin is that part of the ocean floor at the edges of the continents and major islands where, just beyond the shoreline, it tapers gently into the deep sea. The continental margin is made up of the continental shelf, the continental slope, and the continental rise.
What is not part of the continental margin?
Which of the following is NOT part of the continental margin? coral reefs surrounding a lagoon. You just studied 65 terms!
What are the two types of continental margins quizlet?
The two types of continental margin are passive and active.
How are continental slopes formed?
Over geologic time, the continental slopes are temporary depositional sites for sediments. During lowstands of sea level, rivers may dump their sedimentary burden directly on them. Sediments build up until the mass becomes unstable and sloughs off to the lower slope and the continental rise.
Which of the following are components of an active continental margin?
Active continental margins are those that are tectonically active, such as along much of the Pacific coast. Active margins are marked by earthquakes, volcanoes, and mountain belts. Unlike passive margins, they lack a continental rise and abyssal plain.
What are the two types of continental margins?
The two types of continental margin are passive and active. Nearly the entire Atlantic Ocean and a large portion of the Indian Ocean are surrounded by passive continental margins. By contrast, most of the Pacific Ocean is bordered by active continental margins (subduction zones).
Which of the following are the parts of continental margin answer?
It is the name for the collective area that encompasses the continental shelf, continental slope, and continental rise. The characteristics of the various continental margins are shaped by a number of factors.
What three features are included in the continental margin?
The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf. Continental margins constitute about 28% of the oceanic area.
What are 2 types of continental margins?
Two major types of the continental margins include (1) active continental margin and (2) passive continental margins. The “Pacific Ocean” is characterized by the active continental margins which are mainly the narrow tectonically active areas associated with the volcanoes, oceanic trenches, and earthquakes.
What is found in a continental slope?
The predominant sediments of continental slopes are muds; there are smaller amounts of sediments of sand or gravel. Over geologic time, the continental slopes are temporary depositional sites for sediments. During lowstands of sea level, rivers may dump their sedimentary burden directly on them.
What is continental slope called?
Continental slope – The slope is “the deepening sea floor out from the shelf edge to the upper limit of the continental rise, or the point where there is a general decrease in steepness” (IHO, 2008).
What are the three main regions of continental margins?
What are the three main components of a continental margin?
The continental rise, continental slope, and continental shelf are the three basic components that actually make the entire structure of continental margins. The continental slopes and the continental shelves are structural constituents of continents even though they are below the surface of sea.
What are the three main components of continental margin?
What are the features of a continental margin quizlet?
Places where thick continental plate meets oceanic. Extremely flat extension of continents under the ocean’s surface.
Where is the continental slope formed?
A continental slope is the slope between the outer edge of the continental shelf and the deep ocean floor. The continental slope is cut by submarine canyons in many locations. The continental slope marks the seaward edge of the continental shelf.
What is a continental crust?
continental crust, the outermost layer of Earth’s lithosphere that makes up the planet’s continents and continental shelves and is formed near subduction zones at plate boundaries between continental and oceanic tectonic plates. The continental crust forms nearly all of Earth’s land surface.
How is continental slope formed?
What are the three features of the continental margin?
More About Continental Margins. Continental margins are on the leading edges of the tectonic plates,these are similar to the rim of the Pacific Ocean which are usually narrow and
What is the true margin of a continent?
he continental margin is the submerged shelf and slope forming the outer edge of a major landmass. The differences between oceanic and continental crust composition are fundamental in margin development. The transition between the two crustal types lies under the area of the continental slope with the shelf over continental crust and oceanic crust
What are the three divisions of the continental margin?
continental margins have been traditionally assigned to three distinct tectonic settings, i.e., convergent, divergent and translational, the approach used by the MARGINS program recognizes that a range of fundamental physical and chemical processes that form and deform the surface of the Earth operate at all margins.
What is the steepest part of the continental margin?
What is the steepest part of the continental margin? T he shelf break averages about 135 m deep. After the shelf break, the seafloor takes on a steeper angle (about 4o) as it descends to the deep ocean. This steeper portion of the margin is the continental slope , and it extends from the shelf break down to 3000-5000m.
