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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
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
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
Geology of Mars — Mars Mars as seen by the Hubble Space Telescope Designations … Wikipedia
Magnesium — Not to be confused with Manganese. sodium ← magnesium → aluminium Be ↑ Mg ↓ Ca … Wikipedia
Rubidium-strontium dating — The rubidium strontium dating method is a radiometric dating technique that geologists use to determine the age of rocks.Development of this process was aided by Fritz Strassmann, who later moved onto discovering nuclear fission with Otto Hahn… … Wikipedia
Radiometrische Datierung — ist eine Methode der Altersbestimmung. Sie basiert auf dem Wissen über die Zerfallsraten natürlich vorkommender Isotope, ihres üblichen Vorkommens und der Bestimmung des Isotopenverhältnisses. Inhaltsverzeichnis 1 Grundlagen der radiometrischen… … Deutsch Wikipedia
Ediacaran — Geological period o2=8 co2=4500The Ediacaran Period (IPAEng|ˌiːdiˈækərən, named after the Ediacara Hills of South Australia) is the last geological period of the Neoproterozoic Era, just preceding the Cambrian Period of the Paleozoic Era. Its… … Wikipedia
Yellowstone hotspot — Schematic of the hotspot and the Yellowstone Caldera Location of the hotspot in … Wikipedia
Mount Elkins — Map of Antarctica indicating location of Mount Elkins Elevation 2,300 m (7,546 ft) … Wikipedia
