The outermost part of Earth's structure is known as the lithosphere. The lithosphere consists of the crust and small portion of the upper mantle. The lithosphere is divided into a number of tectonic plates. These plates move and interact with one another, driven by convectional forces within t...
Origin of Himalayans Since the birth of the earth, the crustal plates have kept separating and merging. Each convergence creates scars on the earth - mountains. About 65 million years ago, the Tibetan Plateau was still at the bottom of the Neo-Tethys Ocean, the second-largest ocean in the...
The Himalayan mountain ranges were formed when the Indian Plate collided with the Eurasian Plate. This process started about 50 million years ago and is still happening today. Plate Tectonics: The Earth’s surface is made up of large and small plates. The Indian Plate moved north and hit the...
The continents are not distributed evenly over the surface of the globe. If a hemisphere map centred in northwestern Europe is drawn, most of the world’s land area can be seen to lie within that hemisphere. More than two-thirds of the Earth’s land surface lies north of the Equator, an...
Pangea, supercontinent that incorporated almost all of Earth’s landmasses in early geologic time. Fully assembled by the Early Permian Epoch (some 299 million to about 273 million years ago), it began to break apart about 200 million years ago, eventual
Europe is the second smallest of the world’s continents, composed of the westward-projecting peninsulas of Eurasia (the great landmass that it shares with Asia). It occupies nearly one-fifteenth of the world’s total land area. The long processes of his
It is thus concluded that Earth was warmer during Devonian time than at present. Warm and equable climates were common, as shown by the wide distribution of evaporite basins in the Northern Hemisphere, by coal deposits in Arctic Canada and Spitsbergen, and by widespread desert conditions and ...
Is Mount Everest Really the Tallest Mountain in the World? Cheating Death on Everest Exploring 7 of Earth’s Great Mountain Ranges Discover Why Does the New Year Start on January 1? Ten Days That Vanished: The Switch to the Gregorian Calendar ...
dissolve into shallow seas and coral reefs. Beneath this surface the unique and complex physical structure of Indonesia encompasses the junction of three major sections of the Earth’s crust and involves a complicated series of shelves,volcanic mountainchains, anddeep-sea trenches. The island of Bor...
This is a geographical treatment of North America, including maps and statistics as well as a survey of its geologic history, land, people, and economy. It occupies the northern portion of the ‘New World.’ North America is the world’s third largest co