Which boundary type is associated with lateral slippage as occurs at the San Andreas Fault?
The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California.
It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal).
How long ago did the Atlantic start to form as Pangaea started to rift apart?
about 200 million years ago
Which of the following was the single supercontinent which existed before individual continents broke apart from it a quarter of a billion years ago?
Rodinia (from the Russian родить, rodit, meaning “to beget, to give birth”, or родина, rodina, meaning “motherland, birthplace”) was a Neoproterozoic supercontinent that assembled 1.1–0.9 billion years ago and broke up 750–633 million years ago.
In which location in the United States would you expect to see terranes?
Terranes on the west coast of North America. The map to the right (from the United States Geological Survey) shows some of the terranes on the western coast of North America, where they have been particularly well studied.
Which feature forms at a divergent 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.
Why are volcanoes not found at transform boundaries?
Why are volcanoes NOT found at transform boundaries? Volcanoes are not found at transform boundaries because they do not cause changes to the pressure, temperature, or composition of the mantle. The East African rift is a divergent plate boundary that is splitting the continent of Africa into two pieces.
What if Pangea never broke apart?
This would be due to Pangea’s landmass being so large. The rain which comes from the ocean wouldn’t be able to travel far enough inland — leaving parts of Pangea practically uninhabitable by humans and other species. And weather up north would be different too, with Russia being much warmer than it is today.
Will Pangea form again?
The answer is yes. Pangea wasn’t the first supercontinent to form during Earth’s 4.5-billion-year geologic history, and it won’t be the last. So, there’s no reason to think that another supercontinent won’t form in the future, Mitchell said.
Why did Pangea break up?
Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle. This movement in the mantle causes the plates to move slowly across the surface of the Earth.
Which location is the result of oceanic continental convergence?
Ocean-Continent Convergence. 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. The entire region is known as a subduction zone.
Which is formed on top of earth’s crust?
The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.
Which of the following was the single supercontinent which existed before individual continents broke apart from it starting 200 million years ago?
Pangaea existed about 240 million years ago. By about 200 million years ago, this supercontinent began breaking up. Over millions of years, Pangaea separated into pieces that moved away from one another. These pieces slowly assumed their positions as the continent we recognize today.