- isochron age
- 等时线年龄
English-Chinese geology dictionary (英汉地质大词典). 2013.
English-Chinese geology dictionary (英汉地质大词典). 2013.
Isochron dating — is a common technique of radiometric dating and is applied to date certain events, such as crystallization, metamorphism, shock events, and differentiation of precursor melts, in the history of rocks. Isochron dating can be further separated into … Wikipedia
Age of the Earth — This article is about scientific estimates of the age of the Earth. For religious and other non scientific estimates, see Dating Creation. Earth as seen from Apollo 17 The age of the Earth is 4.54 billion years (4.54 × 109 years ± 1%) … Wikipedia
isochron — noun A line on a chart linking rock of the same age (especially as measured using the ratios of lead isotopes) … Wiktionary
Mount Elkins — Map of Antarctica indicating location of Mount Elkins Elevation 2,300 m (7,546 ft) … Wikipedia
Napier Mountains — Range Region Enderby Land, East Antarctica Highest p … Wikipedia
Attawapiskat kimberlite field — The Attawapiskat kimberlite field is a field of diatremes located in the James Bay lowlands, Northern Ontario, Canada. It is thought to have formed about 180 million years ago when the North American Plate moved westward over a center of… … Wikipedia
dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or … Universalium
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
meteorite — meteoritic /mee tee euh rit ik/, meteoritical, meteorital /mee tee euh ruyt l/, adj. /mee tee euh ruyt /, n. 1. a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid. 2. a meteoroid. [1815 25; METEOR + ITE1] * * … Universalium
Lead-lead dating — is a method for dating geological samples, normally based on whole rock samples of material such as granite. For most dating requirements it has been superseded by uranium lead dating (U Pb dating), but in certain specialized situations (such as… … Wikipedia
Rhenium-osmium dating — is a form of radiometric dating based on the beta decay of the isotope 187Re which usually has a half life of 4.16×1010 y [ Smoliar, M.I., Walker, R.J. and Morgan, J.W. (1996). Re Os ages of group IIA, IIIA, IVA, and IVB iron meteorites. Science… … Wikipedia