What is formed in continental continental divergent plate boundaries?
Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges.
What material is coming up at the divergent plate boundary?
magma
plates move apart at a divergent plate boundary, the release of pressure produces partial melting of the underlying mantle. This molten material, known as magma, is basaltic in composition and is buoyant.
What type of material are continental plates made of?
granitic rocks
Continental crust is composed of granitic rocks which are made up of relatively lightweight minerals such as quartz and feldspar. By contrast, oceanic crust is composed of basaltic rocks, which are much denser and heavier.
What landforms are created 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.
Which feature is most likely found at a divergent boundary?
The features most commonly associated with divergent boundaries between tectonic plates are rift valleys, ocean ridges, fissure volcanoes, and…
Which material best represents the continental crust Why?
Continental crust is broadly granitic in composition and, with a density of about 2.7 grams per cubic cm, is somewhat lighter than oceanic crust, which is basaltic (i.e., richer in iron and magnesium than granite) in composition and has a density of about 2.9 to 3 grams per cubic cm.
What landforms are created at continental continental convergent boundaries?
When two continental plates converge, they smash together and create mountains. The amazing Himalaya Mountains are the result of this type of convergent plate boundary. The Appalachian Mountains resulted from ancient convergence when Pangaea came together.
What landforms are created at divergent boundaries?
What happens at a divergent boundary?
Divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle. Picture two giant conveyor belts, facing each other but slowly moving in opposite directions as they transport newly formed oceanic crust away from the ridge crest.
Which two features are commonly found at divergent plate boundaries?
Is continental crust made of granite?
The continental crust is composed of granitic rocks, which have even more silicon and aluminum than the basaltic oceanic crust and are less dense than basalt.
Is the continental crust made of basalt?
Oceanic crust is generally composed of dark-colored rocks called basalt and gabbro. It is thinner and denser than continental crust, which is made of light-colored rocks called andesite and granite.
Which landforms might you see at a divergent plate boundary?
Most divergent plate boundaries are underwater and form submarine mountain ranges called oceanic spreading ridges. While the process of forming these mountain ranges is volcanic, volcanoes and earthquakes along oceanic spreading ridges are not as violent as they are at convergent plate boundaries.
What happens at continental continental divergent?
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust.
What happens when continental plates diverge?
When two continental plates diverge, a valleylike rift develops. This rift is a dropped zone where the plates are pulling apart. As the crust widens and thins, valleys form in and around the area, as do volcanoes, which may become increasingly active.
What feature is most likely found at a divergent boundary?
A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.
Which feature is common to and only found in divergent?
Is the continental crust made of granite?
Which of the following landforms result from divergence of continental crust?
When divergent plate motion occurs beneath a continental crust, rift structures and normal faults form. This continental rifting causes valleys floors to drop down along fault lines.
What are the characteristics of divergent boundaries?
Divergent plate boundaries are characterized by shallow earthquakes, volcanic eruptions, a high topographic ridge, and very young lithosphere.
What features are created at divergent boundaries?
What are some examples of divergent plate boundaries?
Ophiolites. Oceanic spreading centers or mid-ocean ridges produce oceanic crust and a unique type of rock section called ophiolites.
What is a real world example of a divergent plate boundary?
The mid-Atlantic ridge lies mostly in the middle of the Atlantic Ocean and is the classic example of a divergent plate boundary. This tells us that a couple of large mantel plumes are at work below the Earth’s surface and these are gradually pulling the crust apart.
What feature marks the divergent plate boundary?
Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust.
What is found along divergent plate boundaries?
Two types of Divergent Plate Boundaries