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What is one structure you would find at an active continental margin that you would not find at a passive continental margin?
On an active continental margin, you would be likely to find an active ocean trench. This structure would generally not occur at a passive continental margin.
What are two structures you would find at a passive continental margin that you would not find at an active continental margin?
At a passive continental margin, you would typically find extensive shelf sediments and a broad continental shelf, which accumulate over time due to the lack of tectonic activity. Additionally, features such as deltas and estuaries are common as rivers deposit sediment into the ocean. In contrast, active continental margins are characterized by steep slopes, narrow shelves, and geological features like subduction zones and volcanic arcs, which are not present at passive margins.
Which part of the continental margin is missing in an active continental margin?
In an active continental margin, the continental slope is typically more pronounced, and the continental rise is often absent or minimal. This is because active margins are associated with tectonic plate boundaries, where subduction occurs, leading to steep, rugged coastlines and a lack of sediment accumulation that would typically form a continental rise. Instead, the ocean floor is characterized by deep ocean trenches and volcanic arcs.
An exotic terrane created by a seamount accreted to a continental margin would be composed of what?
An exotic terrane formed by a seamount accreted to a continental margin would likely be composed of a mixture of oceanic crust, sediments, and igneous rocks from the seamount. This collision and accretion process can introduce a variety of rock types, such as basalt, volcanic rocks, and marine sediments, which are then incorporated into the continental margin.
Are tsunamis more likely in an active continental margin?
Yes, tsunamis are more likely to occur in active continental margins due to the presence of tectonic plate boundaries, subduction zones, and seismic activity that can trigger underwater earthquakes and vertical displacement of the seafloor, leading to the generation of tsunamis.
What is one structure you would find at an active continental margin that you would not find at a passive continental margin?
On an active continental margin, you would be likely to find an active ocean trench. This structure would generally not occur at a passive continental margin.
What are two structures you would find at a passive continental margin?
At a passive continental margin, you would find a continental shelf, which is the shallow, relatively flat platform extending from the shoreline, and a continental slope, which is a steeply sloping transition zone between the continental shelf and the deep ocean floor.
What is one structure you would find at an active continental margin that you would not find at a passive coninental margin?
A subduction zone would be found at an active continental margin, where one tectonic plate is being forced beneath another. This process leads to features such as deep ocean trenches, volcanic arcs, and earthquakes. In contrast, passive continental margins lack these tectonic interactions and are characterized by a relatively smooth transition from continent to ocean basin.
What are two structures you would find at a passive continental margin that you would not find at an active continental margin?
At a passive continental margin, you would typically find extensive shelf sediments and a broad continental shelf, which accumulate over time due to the lack of tectonic activity. Additionally, features such as deltas and estuaries are common as rivers deposit sediment into the ocean. In contrast, active continental margins are characterized by steep slopes, narrow shelves, and geological features like subduction zones and volcanic arcs, which are not present at passive margins.
What is one structure that you would find at an active continental margin that you would not at a passive?
One structure you would find at an active continental margin that you would not find at a passive margin is a subduction zone. Subduction zones occur at active margins where tectonic plates collide, resulting in one plate being forced beneath the other. This process can lead to the formation of volcanic arcs, deep ocean trenches, and earthquakes.
Which part of the continental margin is missing in an active continental margin?
In an active continental margin, the continental slope is typically more pronounced, and the continental rise is often absent or minimal. This is because active margins are associated with tectonic plate boundaries, where subduction occurs, leading to steep, rugged coastlines and a lack of sediment accumulation that would typically form a continental rise. Instead, the ocean floor is characterized by deep ocean trenches and volcanic arcs.
Where would active volcanoes be found if a deep ocean trench is located adjacent to a continent?
When an overriding plate is continental, a marginal trench forms where the topographic depression seems to follow the outline of the continental margin. It is here where explosive volcanoes can be found.
If a deep-ocean trench is located adjacent to a continent active volcanoes would likely be found .?
When an overriding plate is continental, a marginal trench forms where the topographic depression seems to follow the outline of the continental margin. It is here where explosive volcanoes can be found.
An exotic terrane created by a seamount accreted to a continental margin would be composed of what?
An exotic terrane formed by a seamount accreted to a continental margin would likely be composed of a mixture of oceanic crust, sediments, and igneous rocks from the seamount. This collision and accretion process can introduce a variety of rock types, such as basalt, volcanic rocks, and marine sediments, which are then incorporated into the continental margin.
Are tsunamis more likely in an active continental margin?
Yes, tsunamis are more likely to occur in active continental margins due to the presence of tectonic plate boundaries, subduction zones, and seismic activity that can trigger underwater earthquakes and vertical displacement of the seafloor, leading to the generation of tsunamis.
What is the erosional part of continental margin?
Erosion happens constantly everywhere, from mountains to seashores. Although I would imagine that the greatest amount of erosion would occur in water, so perhaps anywhere from a near shore enviroment down to the continental slope/abyssal plain.
Where can you see a divergent boundary without going to a mid ocean bridge?
You would need to find a continental rift. The best example of an active continental rift is the East African Rift.
