Search results
Results from the WOW.Com Content Network
Eurasia is considered a supercontinent, part of the supercontinent of Afro-Eurasia or simply a continent in its own right. [7] In plate tectonics, the Eurasian Plate includes Europe and most of Asia but not the Indian subcontinent, the Arabian Peninsula or the area of the Russian Far East east of the Chersky Range.
A supercontinent cycle is the break-up of one supercontinent and the development of another, which takes place on a global scale. [4] Supercontinent cycles are not the same as the Wilson cycle, which is the opening and closing of an individual oceanic basin. The Wilson cycle rarely synchronizes with the timing of a supercontinent cycle. [1]
Map of Pangaea with modern continental outlines. The supercontinent cycle is the quasi-periodic aggregation and dispersal of Earth's continental crust.There are varying opinions as to whether the amount of continental crust is increasing, decreasing, or staying about the same, but it is agreed that the Earth's crust is constantly being reconfigured.
Afro-Eurasia (also Afroeurasia and Eurafrasia) is a landmass comprising the continents of Africa, Europe, and Asia. [ 1 ] [ 2 ] The terms are compound words of the names of its constituent parts. Afro-Eurasia has also been called the " Old World ", in contrast to the " New World " referring to the Americas .
Water vapor can also be indirect evidence supporting the presence of extraterrestrial liquid water in the case of some planetary mass objects. Water vapor, which reacts to temperature changes, is referred to as a 'feedback', because it amplifies the effect of forces that initially cause the warming. So, it is a greenhouse gas. [2]
By the time of the Roman Empire, the Silk Road was firmly established. Eurasia around 200 AD. The history of Eurasia is the collective history of a continental area with several distinct peripheral coastal regions: Southwest Asia, South Asia, East Asia, Southeast Asia, and Western Europe, linked by the interior mass of the Eurasian steppe of Central Asia and Eastern Europe.
Rodinia formed at c. 1.23 Ga by accretion and collision of fragments produced by breakup of an older supercontinent, Columbia, assembled by global-scale 2.0–1.8 Ga collisional events. [7] Rodinia broke up in the Neoproterozoic, with its continental fragments reassembled to form Pannotia 633–573 Ma.
If not and there are still pockets of water left, and they evaporate too slowly, then in about 3–4 billion years, once the amount of water vapor in the lower atmosphere rises to 40%, and the luminosity from the Sun reaches 35–40% more than its present-day value, [93] a "runaway greenhouse" effect will ensue, causing the atmosphere to warm ...