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Eons and Eras. The first principal subdivision is called the eon. An eon, the largest division of the geologic time scale, spans hundreds to thousands of millions of years. Geologists generally agree that there are two major eons: the Precambrian eon and the Phanerozoic eon.
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The type of electromagnetic radiation that cannot be focused are x-ray and gamma rays. The photons connects with other photons and not surfaces. When a photon hits an atom it can distribute to any direction. The only way to limited both types of electromagnetic radiation would be through interference.
Fossil fuels, petroleum and natural gas are found in sedimentary rocks.
These types of traps are formed by rock folding. Specifically, a bed of low-permeability shale-covered sandstone is folded into a trap containing petroleum products. Hydrocarbons are trapped at the crest of this fold. The opening of each Tethys Ocean was accompanied by extensional tectonics that created continental rifts during the Infracambrian (Ediacaran-Cambrian transition period), Ordovician, and Permian time in the Middle East. . These rift basins add favorable locations for petroleum production in the region. Tectonic activity - With tectonic activity over millions of years, the Tethys Ocean eroded and the Middle East was transformed into a dry, sandy desert. This exposed the upper layers containing the largest amount of oil and natural gas deposits.
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