What are the four parts of the continental margin?
Major Continental Margin Features
- Continental shelf. This is very shallow water, and underlain by continental crust.
- Continental slope. This is much steeper than the shelf, usually about 3° but ranging from 1-10°.
- Continental rise.
- Abyssal plains.
What are the main features of a continental margin?
The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf.
What are 3 parts of a continental margin?
The continental margins consist of three portions: (1) the continental shelf which has shallow water depths rarely deeper than 650 ft) and extends seaward from the shoreline to distances ranging from 12.3 miles to 249 miles, (2) the continental slope where the bottom drops off to depths of up to 3.1 miles, and (3) the …
Which of the following are components of an active continental margin?
Active margins are marked by earthquakes, volcanoes, and mountain belts. Unlike passive margins, they lack a continental rise and abyssal plain. Instead, the continental slope ends in an oceanic trench, and beyond the trench, the topography is hilly and irregular, often dotted with rugged volcanic seamounts.
What is a continental feature?
continental landform, any conspicuous topographic feature on the largest land areas of the Earth. Familiar examples are mountains (including volcanic cones), plateaus, and valleys.
What is the flattest part of the continental margin?
abyssal plain
The abyssal plain includes most of the ocean floor, and is the flattest region on Earth.
What is a continental edge?
A continental shelf is the edge of a continent that lies under the ocean. A continental shelf extends from the coastline of a continent to a drop-off point called the shelf break. From the break, the shelf descends toward the deep ocean floor in what is called the continental slope.
What are the parts of a passive continental margin quizlet?
barrier reef.
Which type of crust typically comprises the continental margin?
Which type of crust typically comprises the continental origin? Continental crust is mostly granite, a coarse-grained igneous rock, and oceanic crust is mostly basalt, a fine-grained igneous rock.
What are the 7 major continents?
A continent is one of Earth’s seven main divisions of land. The continents are, from largest to smallest: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. When geographers identify a continent, they usually include all the islands associated with it.
What landforms are created by continental continental?
Where are active continental margins located?
An active continental margin is found on the leading edge of the continent where it is crashing into an oceanic plate. An excellent example is the west coast of South America. Active margins are commonly the sites of tectonic activity: earthquakes, volcanoes, mountain building, and the formation of new igneous rock.
What are the three features of the continental margin?
The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf. The continental shelf is the portion of the continental margin that transitions from the shore out towards to ocean. They are believed to make up 7 percent of the sea floor.
What is the steepest part of the continental margin?
The continental slope is said to be the steepest part of the continental margin, where there is a sudden decrease in slope or it suddenly descends down to the ocean floor and the sea floor begins to level out towards the abyssal plain.
What are the three subdivisions of the continental margin?
The continental margin is of the three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges. The continental margin is the shallow water area found in proximity to continent. The continental margin consists of three different features: the continental rise, the continental slope, and the continental shelf.
How are regions of the continental margin divided?
The continental margin is the submerged outer edge of a continent. It is generally divided into two sections: the continental shelf and the continental slope. The continental shelf is the region that extends seaward from the shoreline to a sharp drop-off that marks the beginning of the continental slope.