Which two terms apply to oceanic crust rather than continental crust?
Oceanic crust differs from continental crust in several ways: it is thinner, denser, younger, and of different chemical composition. Like continental crust, however, oceanic crust is destroyed in subduction zones.
Why is the continental crust important?
Importance. Because the surface of continental crust mainly lies above sea level, its existence allowed land life to evolve from marine life.
Why continental crust is thicker?
At convergent plate boundaries, where tectonic plates crash into each other, continental crust is thrust up in the process of orogeny, or mountain-building. For this reason, the thickest parts of continental crust are at the world’s tallest mountain ranges.
What is the continental crust thickness?
around 35 km
Why does the oceanic crust sink beneath the continental crust at the subduction zone?
Oceanic crust sinks because it is denser and has higher specific gravity than the more silicon aluminum enriched continental crust. When oceanic crust converges with continental crust, the denser oceanic plate plunges beneath the continental plate. This process, called subduction, occurs at the oceanic trenches.
What do oceanic oceanic convergent boundaries form?
Deep ocean trenches, volcanoes, island arcs, submarine mountain ranges, and fault lines are examples of features that can form along plate tectonic boundaries. Volcanoes are one kind of feature that forms along convergent plate boundaries, where two tectonic plates collide and one moves beneath the other.
What landforms are created by Oceanic Oceanic?
A seamount is an underwater mountain with a flat top and a guyot is an underwater mountain with a peak. A seamount is an underwater mountain range and a guyot is the a deep part of the ocean between seamounts….
| Continental Landforms | Oceanic Landforms |
|---|---|
| Plains | Abyssal Plain |
| Volcano | Seamounts (Guyot) |
What is the major difference between oceanic continental convergence and oceanic oceanic convergence?
Continental plates are much thicker that Oceanic plates. At the convergent boundaries the continental plates are pushed upward and gain thickness. The rocks and geological layers are much older on continental plates than in the oceanic plates. The Continental plates are much less dense than the Oceanic plates.
What changes to landforms are caused by Transform boundaries?
Transform boundaries represent the borders found in the fractured pieces of the Earth’s crust where one tectonic plate slides past another to create an earthquake fault zone. Linear valleys, small ponds, stream beds split in half, deep trenches, and scarps and ridges often mark the location of a transform boundary.
Which event is associated with Convergent Boundaries group of answer choices?
Answer Expert Verified Convergent boundary plate tectonic involves collisions between oceanic and continental plates. The thinner and less denser oceanic plate overriden by the thicker and more denser continental plate. The oceanic plate is forced down the mantle, this event is known as subduction.