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Which seafloor feature is not found on active continental margins?
continental rise
Do active continental margins have a continental rise?
No, active continental margins typically do not have a continental rise. Instead, they often have a steep continental slope that descends into a deep oceanic trench due to tectonic activity. Continental rises are found at passive continental margins where there is minimal tectonic activity.
How do active margins differ from passive margins?
Passive continental margins are not areas of convergence. There is little volcanic and earthquake activity on passive margins. Active margins are areas of convergence where one plate is descending beneath another. They are associated with volcanic and earthquake activity.
What does the passive continental margin have that the active margin does not?
Subduction. A subduction trench.
Where are broad sediment covered continental shelves found in active pr passive margins?
Broad sediment-covered continental shelves are typically found in passive margins where there is a lack of tectonic activity and the crust is stable. Active margins, on the other hand, are associated with tectonic activity like subduction zones or rift zones, which can result in narrower shelves due to more abrupt changes in the seafloor elevation.
What is true about passive continental margins?
Passive continental margins are not tectonically active, meaning there is no significant seismic activity or mountain-building processes occurring there. They are typically characterized by a wide continental shelf and a gentle slope leading to the ocean basin. Sediment accumulation is common along passive continental margins due to lower energy conditions compared to active margins.
Which of the following is true of passive continental margins?
they have a continental rise
Is true of active continental margins?
Active continental margins are characterized by tectonic plate interactions, typically where an oceanic plate converges with a continental plate, leading to geological activity such as earthquakes and volcanic eruptions. These margins often feature steep, rugged coastlines and narrow continental shelves. Additionally, they are associated with subduction zones, which create deep ocean trenches and mountain ranges on land. The dynamic nature of these environments significantly influences local ecosystems and sedimentation processes.
What is the difference between a passive continental margin an an active continental margin?
Passive continental margins are not areas of convergence. There is little volcanic and earthquake activity on passive margins. Active margins are areas of convergence where one plate is descending beneath another. They are associated with volcanic and earthquake activity.
What are characteristics of an active margin?
Active margins are typically characterized by tectonic activity, such as earthquakes and volcanic eruptions, due to the convergence of oceanic and continental plates. They often feature steep, rugged coastlines, narrow continental shelves, and deep ocean trenches. Additionally, active margins are less prone to sediment accumulation compared to passive margins, leading to a more dynamic geological landscape. These regions are often associated with significant geological hazards and rich marine ecosystems.
A passive continental margin has a while an active margin does not.?
An active continental margin may have a trench.
What is usually found at an active margin but NOT at a passive margin?
Active and passive margins describe the various characteristics of continental margins that are a result of plate tectonics. An active margin usually has numerous volcanoes and mountains, while a passive margin typically do not have these formations.
