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The process by which molten material adds new oceanic crust to the ocean floor?
Wiki User
∙ 11y ago
Wiki User
∙ 11y ago
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Oceanic crust is lighter than the continental crust?
No, the oceanic crust is denser. That's why the land areas "float" so much higher than the ocean bedrock.
Name a plate that is entirely made of continental crust?
All major plates contain both continental and oceanic crust except for the Pacific and Nazca plates.
When is new ocean crust or sea floor produced?
New oceanic crust is created at the mid-oceanic ridges, a divergent plate boundary.
Explain how scientist tink most magma is formed?
Magma is formed from the subduction and melting of cold, dense, wet oceanic crust at some convergent plate margins. The moisture in the rock assists in the melting of the crust and the rock surrounding it. Magma is also formed at hot spots in the mantle where hot material undergoes decompression melting as it rises. Decompression melting also occurs at the mid-ocean ridges where new oceanic crust is formed from rising mantel rock.
A plate with oceanic crust sinking under another plate with oceanic crust?
When two oceanic plates or two plates both containing oceanic crust collide or converge, the convergent boundary will form a trench. The plate which has the higher density will plunge beneath the other plate forming a trench.
What happens to old oceanic crust as new molten material from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What is a good sentence for sea floor spreading?
Sea floor spreading mean the process by which molten material adds new oceanic crust to the ocean floor
Describe how molten rock can form new oceanic crust?
Some of the molten rock overflows onto the ocean floor in tremendous eruptions. material from the mantle canwell up, forming a ridge and new oceanic crust.
What happens to old oceanic crust as new molten material rises to the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What happens to the old oceanic crust as new molten material rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
What happens when oceanic crust and continental crust collide?
Subduction occurs on continental boundaries because oceanic sub floor is denser and heavier than the lighter more buoyant crust. The oceanic crust slides under the continental crust areas usually on a plate boundary. This is in a recycle style mode that constantly is remaking the ocean floor. The oldest rocks on the ocean bottom are a drop in the geologic time bucket, compared to the rock ages on land.
How do you explain the process of the seafloor spreading?
The seafloor spreading definition is the geologic process that occurs at the boundary between 2 plates where molten material within the earth pushes its way up, causing the plates to move away from each other. At these divergent boundaries molten material cools and hardens, creating new oceanic crust or seafloor
What is the source material in basaltic magma?
Oceanic crust and oceanic sediments.
If a plate of ocean crust plunged underneath a continental platewhat landforms do you expect to develop?
When the oceanic plate is subducted underneath the continental plate, the oceanic plate begins to melt. The molten material rises through the continental crust and a volcano forms.
What three of the 4 layers of this crust are igneous material?
oceanic crust
Three of the four layers of this crust are igneous material?
oceanic crust
What happens to old oceanic crust as molten materials rises from the mantle?
The older oceanic crust moves away from the spreading center and is eventualy subducted back into the mantle.
