Continental Accretion and Plate Tectonics Model - Hello friends Mesothelioma Destroyer, In the article you are reading this time with the title Continental Accretion and Plate Tectonics Model, We have prepared this article well for you to read and learn from. We hope the contents of this post are helpful. Article geological structures, Article plate tectonics, Article plate tectonics model, Article rock cycle, Article tectonics, Article Types of Margins, We hope you can understand what we wrote. Okay, happy reading.

Title : Continental Accretion and Plate Tectonics Model
link : Continental Accretion and Plate Tectonics Model

Continental Accretion and Plate Tectonics Model

Continental Accretion

Accretion is a process by which material is added to a tectonic plate or a landmass. This material may be sediment, volcanic arcs, seamounts or other igneous features, or blocks or pieces of continental crust split from other continental plates. Over "geologic time" (measured in millions of years), volcanic arcs form and may be crushed onto (or between) colliding continents with plate boundaries. Pieces of continental land masses may be ripped away and carried to other locations. For instance, Baja California and parts of southern California west of the San Andreas Fault are being ripped away from the North American continent and are slowly being carried northward. These rocks may eventually pass what-is-now San Francisco, and perhaps 70 to 100 million years from now will be crushed and accreted into the landmass currently known as Alaska!
Plate tectonics model: Subduction introduces oceanic crustal rocks (including sediments) back into the Asthenosphere. Water and gas helps low-temperature minerals to melt and rise as, forming new continental crust (less dense than oceanic crust). Floating on the Asthenosphere, the continental crustal materials accumulate, forming continents.

Plate Tectonic Model
Photo Courtesy: Phil Stoffer


The processes associated with subduction lead to the accretion (growth) of continents over time. As ocean crust is recycled back into the upper mantle, the lighter material "accumulates" along continental margins. Pieces of lithosphere are sometimes scraped off one plate and crushed onto and added to another plate.   

refining
Photo Courtesy: Phil Stoffer

   

Such is the Article Continental Accretion and Plate Tectonics Model

That's it for the article Continental Accretion and Plate Tectonics Model This time, I hope it's been helpful to you all. Okay, see you in another article.

You are now reading the article Continental Accretion and Plate Tectonics Model with the link address https://mesothelioma-destroyer.blogspot.com/2017/01/continental-accretion-and-plate.html

Tweet