What types of rocks are good for radiometric dating get the facts dating abuse statistics

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anthracite - The most highly metamorphosed form of coal, containing 92 to 98 percent of fixed carbon. anticline - A fold of rock layers with a convex shape pointing upwards. aphanitic - An igneous rock in which the matrix grains are too small to be seen with the unaided eye. aquifer - A permeable formation that stores and transmits groundwater in sufficient quantity to supply wells.

bar - A unit of pressure equal to 10 to the sixth dynes/square centimeter; approximately one atmosphere.

angle of repose - The steepest slope angle in which particular sediment will lie without cascading down.

angstrom - A length of 10 meter or one hundred millionth of a centimeter. angular unconformity - An unconformity in which the bedding planes of the rocks above and below are not parallel.

Geological analysis relies mainly on chemistry, physics and mathematics. a'a' lava - basaltic lava characterized by a rough or rubbly surface composed of broken lava blocks called clinker.

A-horizon - The uppermost layer of a soil, containing organic material and leached minerals.

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bar-finger sand - An elongated lens of sand deposited during the growth of a distributary in a delta.

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