FACTOID # 82: The women of Iceland earn two-thirds of their nation's university degrees.
 
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Encyclopedia > Continental platform

In geology, a platform is a continental area covered by relatively flat or gently tilted, mainly sedimentary strata, which overly a basement of consolidated igneous or metamorphic rocks of an earlier deformation. Platforms, shields and the basement rocks together constitute cratons. Sediment is any particulate matter that can be transported by fluid flow and which eventually is deposited as a layer of solid particles on the bed or bottom of a body of water or other liquid. ... Strata is a comic science fiction novel by Terry Pratchett. ... In geology, the terms basement and crystalline basement are used to define the rocks below a sedimentary basin, or more generally any rock below sedimentary rocks or sedimentary basins that are metamorphic or igneous in origin. ... Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks. ... Metamorphic rock is the result of the transformation of a pre-existing rock type, the protolith, in a process called metamorphism, which means change in form, derived from the Greek words meta, change, and morphe, form. The protolith is subjected to extreme heat (>150 degrees Celsius) and pressure causing profound... World geologic provinces. ...


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10(o) Physiography of the Earth's Terrestrial Surface (1082 words)
Passive continental margins are relatively wide and have a lack of volcanic activity and few earthquakes.
The continental margin is actually made up of three structures: the continental shelf, the continental slope and the continental rise.
The continental rise is composed of a number abyssal fans that run side-by-side along the edge of the continental slope.
Ann (7581 words)
It is generally accepted that during its geological history, numerous continental fragments belonging to one of these mega-continents were rifted off from the main body and amalgamated to the next, so that the Anatolian realm is made of several oceanic and continental “terranes” with different geological features.
The Permian sequence represented by epicontinental carbonates is followed in the south and north of the platform by rift related Lower-Middle Triassic sediments and volcanics which indicate to the opening of Neotethyan basins and thus the beginning of the alpine cycle.
This unit is observed as a nappe-pile on the platformal carbonates of the Taurides.
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