What is the gently sloping submerged portion of the continental margin extending from the shoreline to the continental slope?

What is the gently sloping submerged portion of the continental margin extending from the shoreline to the continental slope?

continental shelf

What do scientists call the gently sloping land from the shoreline to the continental slope?

Which of the following is the seaward edge of the continental shelf?

At the seaward edge of a continental shelf is a steep slope called a continental slope. The continental shelf and continental slope may be cut by deep V-shaped valleys. These deep valleys are called submarine canyons.

Which of the following is part of the continental margin?

The continental margin is the shallow water area found in proximity to continents. The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf.

What is the difference between a passive and an active margin?

An active continental margin is found on the leading edge of the continent where it is crashing into an oceanic plate. Passive continental margins are found along the remaining coastlines.

What are the three types of continental shelves?

The shelf area is commonly subdivided into the inner continental shelf, mid continental shelf, and outer continental shelf, each with their specific geomorphology and marine biology.

What is a continental slope in the ocean?

Continental slopes are the edges of continental blocks, the zones of change from continental crust to oceanic crust. They are critical links in the chain of sedimentary processes that eventually carry sediment to the true ocean basin floor.

What’s the difference between the continental shelf and the continental slope?

A continental shelf is the edge of a continent that lies under the ocean. Continents are the seven main divisions of land on Earth. From the break, the shelf descends toward the deep ocean floor in what is called the continental slope. Even though they are underwater, continental shelves are part of the continent.

What is the difference between continental slope and continental rise?

1 – The continental slope is shallower and 2 – steeper than the continental rise. 3 – The continental slope is made of continental crust, but the continental rise is made of sediment. Turbidity currents carry a lot of sediment down the continental slopes, leaving canyons behind.

What is called continental slope?

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). The most narrow, active margin, slopes are in the Mediterranean and Black Seas (25.8 km).

Which area best describes a continental slope?

Continental Slopes. Continental slopes are regions of steeply sloping seafloor that lie between continental shelves and the deep ocean basins (Figure 2). Regional gradients are typically 2–5°, but locally slopes may be much steeper.

What does a continental rise look like?

Scientific definitions for continental rise A wide, gentle incline from an ocean bottom to a continental slope. A continental rise consists mainly of silts, muds, and sand, and can be several hundreds of miles wide. Although it usually has a smooth surface, it is sometimes crosscut by submarine canyons.

Where else can you find a visible continental rise?

The continental rise completely surrounds Antarctica covering 39.4% of the Southern Ocean (see Table), forming a halo of sediment surrounding the Antarctic continent. Example of continental rise (in yellow) and submarine fan (red) adjacent to the coast of southeastern Brazil.

Where is a continental rise located?

The continental rise is a sediment underwater feature found between the continental slope and the abyssal plain. This feature can be found all around the world, and it represents the final stage in the boundary between continents and the deepest part of the ocean.

What is the area at the bottom of the continental slope where sediment piles up?

sediments cascade down the continental slope in turbidity currents (dense sediment laden water) and pile up at the continental rise. associated with trenches that surrounds the pacific ocean this is why the area is called the ring of fire.

Which is the deepest trench in the world?

Mariana Trench

What causes continental slope?

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.