Which coast represents an active continental margin quizlet?
Which coast represents an active continental margin? (Due to the subduction of the Nazca Plate beneath the west coast of South America and the resultant growth of the Andes, this region is considered an active continental margin.)
Which continental margins are active?
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.
Is the Atlantic coast an active margin?
The Atlantic and Gulf coasts are passive continental margins because they lack the high levels of earthquake, volcanic, and mountain-building forces characteristic of active continental margins (such as the current U. S. West Coast) that are right at plate boundaries.
Is the Pacific coast an active margin?
The Pacific Coast is an active margin that is characterized by narrow beach, steep cliffs, rugged coastlines with headlands and sea stacks (see features discussed below). Passive continental margins occur where the transition between oceanic and continental crust which is not an active plate boundary.
Which feature is typically found along Pacific type active margins?
Along the margins of the Pacific are found most of Earth's: oceanic trenches.
Which of the following is associated with passive continental margin?
Submergent coasts are associated with passive continental margins with wide coastal plains and continental shelves. Estuaries are associated with submergent coastlines formed when sea level rises and floods existing river valleys.
Is the Oregon coast an active continental margin?
Oregon Continental Shelf Management The State of Oregon maintains an interest and is an active participant in the activities that occur on the Outer Continental Shelf (OCS) beyond the State's Territorial Sea boundaries.
What are active margins?
Glossary. Active margin. A zone where tectonic plates either converge with, or shear past, one another. These zones are usually the focus of plate collision, transpression, accretion, subduction, volcanism, orogenic activity, high seismicity, and earthquakes.
Why is the West Coast an active margin?
The other type of margin is modeled after the U.S. West Coast. This margin is sometimes characterized as an “active” margin because it is on the leading edge of the North American plate. Margins along plate boundaries are mountainous with narrow shelves, steep slopes and rugged topography.
Is the East Coast a passive margin?
The East Coast and North Slope are now passive margin regions located within the greater North American Plate.
Is the California coast an example of an active margin?
In geology, some types of continental margins are be zones of high seismicity due to the proximity of tectonic plate boundaries. These are “active” margins, and the U.S. Pacific Northwest, southern Alaska, and California are examples of such active continental margins.
Is the East Coast of the US a passive margin?
The East Coast and North Slope are now passive margin regions located within the greater North American Plate.
What is an active continental margin quizlet?
Active Continental Margins- where the oceanic lithosphere is being sub ducted beneath the continent. Often associated with deep ocean trenches. Located primarily around the Pacific Ocean. Sediments and rocks can be scraped from the descending plate and accumulate on the continental plate as an accretionary wedge.
Where are most active continental margins found?
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.
Which coast or coasts of the United States are active margin coasts that is coasts near plate boundaries that are subject to earthquakes and volcanoes?
The west coast The west coast of the United States is an example of an active margin, where the coastline corresponds with the boundary between the Pacific and North America Plates.
Is the east coast of the US a passive margin?
The East Coast and North Slope are now passive margin regions located within the greater North American Plate.