Interaction between tectonic plates creates activity on their boundaries. Sometimes, the plates spread apart from each other, creating ocean trenches and, eventually, continents. This is called a divergent boundary. Sometimes one plate slides underneath the other, creating volcanoes and earthquakes.
How are boundaries formed?
They are formed when two plates collide, either crumpling up and forming mountains or pushing one of the plates under the other and back into the mantle to melt. Convergent boundaries form strong earthquakes, as well as volcanic mountains or islands, when the sinking oceanic plate melts.
Which plate forms a boundary?
There are many different types of plate boundaries. For example, sections of Earth’s crust can come together and collide (a “convergent” plate boundary), spread apart (a “divergent” plate boundary), or slide past one another (a “transform” plate boundary).
Where are boundaries formed?
Divergent boundaries can form within continents but will eventually open up and become ocean basins. Divergent boundaries within continents initially produce rifts, which produce rift valleys. The most active divergent plate boundaries are between oceanic plates and are often called mid-oceanic ridges.
What are 3 things that are formed at a divergent boundary?
Effects that are found at a divergent boundary between oceanic plates include: a submarine mountain range such as the Mid-Atlantic Ridge; volcanic activity in the form of fissure eruptions; shallow earthquake activity; creation of new seafloor and a widening ocean basin.
What landforms do 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.
What landforms are made by transform boundaries?
Linear valleys, small ponds, stream beds split in half, deep trenches, and scarps and ridges often mark the location of a transform boundary.
What are examples of transform boundaries?
Some examples of continental transform boundaries are the famous San Andreas fault, the Alpine fault in New Zealand, the Queen Charlotte Island fault near western Canada, the North Anatolian fault in Turkey, and the Dead Sea rift in the Middle East.
What are the three types of convergent boundary?
Convergent boundaries , where two plates are moving toward each other, are of three types, depending on the type of crust present on either side of the boundary — oceanic or continental . The types are ocean-ocean, ocean-continent, and continent-continent.
What is an example of a convergent plate boundary?
The Pacific Ring of Fire is an example of a convergent plate boundary. At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents.
What type of plate boundary formed If two plates move in different directions?
When oceanic or continental plates slide past each other in opposite directions, or move in the same direction but at different speeds, a transform fault boundary is formed. No new crust is created or subducted, and no volcanoes form, but earthquakes occur along the fault.
Where does convergent boundary occur?
Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere. The geologic features related to convergent boundaries vary depending on crust types. Plate tectonics is driven by convection cells in the mantle.
What type of plate boundary causes volcanoes to form?
The two types of plate boundaries that are most likely to produce volcanic activity are divergent plate boundaries and convergent plate boundaries. At a divergent boundary, tectonic plates move apart from one another.
Where can volcanoes form?
There are three main places where volcanoes originate: Hot spots, Divergent plate boundaries (such as rifts and mid-ocean ridges), and. Convergent plate boundaries (subduction zones)
How are trenches formed?
In particular, ocean trenches are a feature of convergent plate boundaries, where two or more tectonic plates meet. At many convergent plate boundaries, dense lithosphere melts or slides beneath less-dense lithosphere in a process called subduction, creating a trench.
What landforms are formed by divergent boundaries?
At DIVERGENT boundaries the plates move apart allowing molten magma to rise and form new crust in the form of ridges, valleys and volcanoes. Landforms created by divergent plates include the Mid Atlantic Ridge and the Great African Rift Valley.
What is formed at a transform boundary?
The Earth’s crust is split into sections called tectonic plates. Transform boundaries are where two of these plates are sliding alongside each other. This causes intense earthquakes, the formation of thin linear valleys, and split river beds.
What geologic feature is are formed?
Lesson Summary. Geologic features are created by geologic processes. They typically result from the interactions between Earth’s external processes (erosion and deposition) and internal processes (plate tectonics). They may be quite large (like a mountain range) or small (like the ripples in a streambed).
What is the process of convergent boundary?
If two tectonic plates collide, they form a convergent plate boundary. Usually, one of the converging plates will move beneath the other, a process known as subduction. Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common.
What is the three convergent form?
There are three types of convergent plate boundaries: oceanic-oceanic boundaries, oceanic-continental boundaries, and continental-continental boundaries.
What are the three kinds of plate boundaries explain each kind?
1) convergent boundary = when plates move towards each other , they form convergent boundary. 2) divergent boundary = when plates move away fro. each other , they form divergent boundary. 3) transform boundary.
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