Bubnoff unit

Bubnoff unit
(B)
   a unit used in geology to measure erosion rates. One Bubnoff unit is equalto the removal of one micrometer per year (µm/a), or one millimeterper thousand years, or one meter per million years (m/Ma). First proposedin 1968, the unit is named for Serge von Bubnoff (1888-1957), a Russian-borngeologist who taught in Germany.

Dictionary of units of measurement. 2015.

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  • Bubnoff unit — The Bubnoff unit (abbreviated B) is a unit of speed equal to 1 m / 106 a. In other words, 1 B is equal to 1 meter in 1,000,000 years, 1 millimeter in 1,000 years, or one micrometer per year. The Bubnoff unit is employed in geology to measure… …   Wikipedia

  • Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… …   Wikipedia

  • B —    1. informal abbreviation for billion, generally meaning the American billion 109. This abbreviation is non metric: the metric abbreviation for 109 is G, standing for the prefix giga . The B form has been used in such units as Bcf (billion… …   Dictionary of units of measurement

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