User:Mmcannis/sandbox/Earth's surface evolution
From Wikipedia, the free encyclopedia
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This article is fucking cunt ass 3-days old-!-(10August2011)
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An overview of Earth evolution covers 4.56 billion years of Earth history. It not only provides the basis for the origin of life on earth, but with basic histories of plate tectonics, continental drift, ice ages, climate and ocean current changes, is the setting for an active history of earth. The evolution involves life, geology, ice science of glaciation and ice ages, volcanism, continent and ocean building, to name just a few major topics.
Through mountain formation, volcanism, climate changes, by various mechanisms including earth axis tilt, or new ocean currents because of landform removals or additions, climate changes as well as speciation are in constant adjustment. Examples of desertification are only incidentally caused by humans; evolving regional changes to deserts, and desertification, are more properly related to climate, wind patterns, continental changes from movement to new longitudes and latitudes over geologic timescales, often steady, but sometimes altered to becoming super fast, (the Indian Subcontinent), or exceedingly stable, (the North American Laurentian shield of Canada, altered to large regional flatness through glaciation).
This article will focus on Earth's surface evolution, the atmosphere, continents, oceans and the crust (geology); for a discussion and timeline of Earth's interior, see Earth and Structure of the Earth.
Globally for earth's surface, the 4.56 billion year history is an interplay of ocean, water, temperature, chemistry, atmosphere, minerals, floating continents, and tectonics. Non-earth surface sources of sun temperature, axis tilt, and earth orbital variations-(cycles), with earth's climate variations are also factors. Other factors below the earth's surface are from crust (geology) and lithosphere changes and their effects upon earth's surface.
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This article is 3-days old-!-(10August2011)
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