Mountains are formed by the movements of the Earth's crust and tectonic plates. Movements deep beneath the Earth's surface cause a variety of reactions, which results in different types of mountains. Mountains can form as a result of volcanic activity, the collision of two tectonic plates or movement along a fault line.Continue Reading
The forces that form a mountain are generated far below the Earth's surface. Two of the most common forms of mountains are formed by interactions between the Earth's tectonic plates. These theoretical plates form the Earth's crust and upper mantel, and they move independently of one another. When the plates collide, one possible outcome is the formation of mountains. In the case of volcanic mountains, the collision of two plates results in melting rock that rises to the surface. This melted rock or magma breaks through to the surface and slowly builds into a mountain. In other instances, it is blocked and bulges up under the surface. Once it cools, the top layer of soil erodes away, leaving a dome-shaped mountain.
Fold mountains are also a result of two tectonic plates colliding. In the case of fold mountains, however, one tectonic plate buckles and folds up, creating large mountain ranges. When two tectonic plates grind against each other at a fault line, the Earth's surface can rise or fall, which creates fault-block mountains. These mountains usually have steep sides and are bordered by valleys.Learn more about Earth Science
The primary heat source for the Earth is the radioactive decay of uranium, thorium and potassium, found in the mantle and crust. The Earth produces more heat through phase changes, such as the freezing of liquid iron in the inner core and minerals in other parts of its core. In addition, the slow cooling process of the Earth gives off heat that melts magma.Full Answer >
An abyssal plain is a deep undersea area created by sediments overlaying a rocky crust, and they are the flattest places on Earth. Abyssal plains cover one-third of the Earth's surface, as much as all land above water, and they sit near continental borders and underwater mountain ranges. Most abyssal plains are in the Atlantic Ocean, with fewer in the Indian Ocean and fewer still in the Pacific Ocean.Full Answer >
Silicates are the most abundant group of minerals found in Earth's crust, according to Georgia State University. The most abundant elements in the Earth's crust are oxygen at 46.6 percent and silicon at 27.7 percent. These two elements combine with each other and other elements to form various silicates.Full Answer >
Jacques Piccard was an ocean explorer famous for being one of the first to venture into the Challenger Deep, the deepest part of the ocean and the lowest point on the Earth's crust. Piccard developed a specially reinforced bathyscape called Trieste for the journey. Along with his partner, Don Walsh of the United States Navy, he reached a depth of 35,800 feet beneath the sea.Full Answer >