What are the different types of plate tectonic boundaries?
At convergent plate boundaries where an oceanic plate meets a continental plate, oceanic crust is forced down into the Earth’s mantle and begins to melt. The melted rock rises into and through the overlying plate as magma, often forming a chain of volcanoes parallel to the plate boundary.
What features form at plate tectonic boundaries? - NOAA Ocean …
When two tectonic plates meet, we get a “plate boundary.” There are three major types of plate boundaries , each associated with the formation of a variety of geologic features. If two tectonic plates collide, they form a convergent plate boundary.
The Geology of the Mariana Convergent Plate Region - NOAA …
Between the Mariana Trench and the island volcanoes, huge mud volcanoes provide a window into the boundary between two tectonic plates that have been colliding for over 50 million years and harbor unique communities of organisms that thrive in the most extreme fluid composition recorded in the oceans.
Chile Margin and Triple Junction Geology - NOAA Ocean Exploration
Extending the entire length of South America, the margin is punctuated by the deep Peru-Chile trench where the Cocos, Nazca, and Antarctic plates are converging with and sinking beneath the South American plate. This type of plate boundary is called a subduction zone, and this one is intersected at 46°S by the Chile Rise, a spreading center ...
Where tectonic plates are moving apart, they form a divergent plate boundary. At divergent plate boundaries, magma rises from deep within the Earth and erupts to form new crust on the lithosphere. Most divergent plate boundaries are underwater (Iceland is an exception), and form submarine mountain ranges called oceanic spreading ridges.
What is a mid-ocean ridge? - NOAA Ocean Exploration
Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt.
What are the different types of plate tectonic boundaries?
This image shows the three main types of plate boundaries: divergent, convergent, and transform. Image courtesy of the U.S. Geological Survey. Download image (jpg, 76 KB).
INSPIRE: Chile Margin 2012 - NOAA Ocean Exploration
Chile, and the other countries of South America, lie on top of the South American tectonic plate. To the west of Chile, the Nazca Plate extends beneath the Pacific Ocean and meets the Pacific Plate along a divergent plate boundary called the East Pacific Rise.
The Northeast Caribbean – Plate Tectonics in Action: Background ...
Puerto Rico, the Virgin Islands to its east, and eastern Hispaniola to its west, are located on an active plate boundary zone between the North American Plate and the northeast corner of the Caribbean Plate (Figure 1).
Where tectonic plates slide horizontally past each other, the boundary between the plates is known as a transform plate boundary. As the Images from Page 1 top to bottom: San Francisco, California, Earthquake April 18, 1906. Downtown San Francisco showing resi-dents watching fire after the 1906 earthquake. Photo by Ralph O. Hotz. April 1906. Image