geochronologic method

Игры ⚽ Поможем написать реферат

geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… … Universalium
Geochronology — A schematic depiction of the major events in the history of our planet. Geochronology is the science of determining the age of rocks, fossils, and sediments, within a certain degree of uncertainty inherent to the method used. A variety of dating… … Wikipedia
Radiometric dating — (often called radioactive dating) is a technique used to date materials such as rocks, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.[1]… … Wikipedia
tephrochronology — tephrochronological /tef roh kron l oj i keuhl/, adj. /tef roh kreuh nol euh jee/, n. Geol. a geochronologic technique based on the dating of layers of volcanic ash. Cf. tephra. [1940 45; < Sw tefrokronologi, equiv. to tefr(a) volcanic ejecta ( … Universalium
lichenometry — noun a geomorphic method of geochronologic dating that uses lichen growth to determine the age of exposed rock: lichens are presumed to increase in size radially at specific rates as they grow … Wiktionary

Словари и энциклопедии на Академике