radiocarbon calibration wikipedia - EAS
Radiocarbon dating - Wikipedia
https://en.wikipedia.org/wiki/Radiocarbon_datingRadiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.. The method was developed in the late 1940s at the University of Chicago by Willard Libby.It is based on the fact that radiocarbon (14
Radiokarbonmethode – Wikipedia
https://de.wikipedia.org/wiki/RadiokarbonmethodeDie Radiokarbonmethode, auch Radiokohlenstoffdatierung, 14 C, C14-Datierung oder Radiokarbondatierung bzw. Radiocarbondatierung, ist ein Verfahren zur radiometrischen Datierung kohlenstoffhaltiger, insbesondere organischer Materialien. Der zeitliche Anwendungsbereich liegt etwa zwischen vor 300 und etwa 60.000 Jahren. Das Verfahren …
Before Present - Wikipedia
https://en.wikipedia.org/wiki/Before_PresentBefore Present (BP) years, or "years before present", is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1 January 1950 as the commencement date of the age scale.
Radiometric dating - Wikipedia
https://en.wikipedia.org/wiki/Radiometric_datingRadiometric dating, radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed. The method compares the abundance of a naturally occurring radioactive isotope within the material to the abundance of its decay products, which …
Pleistocene megafauna - Wikipedia
https://en.wikipedia.org/wiki/Pleistocene_megafaunaThe last glacial period, commonly referred to as the 'Ice Age', spanned 125,000 to 14,500 years ago and was the most recent glacial period within the current ice age which occurred during the final years of the Pleistocene epoch. The Ice Age reached its peak during the last glacial maximum, when ice sheets commenced advancing from 33,000 years BP and reached their …
Datation par le carbone 14 — Wikipédia
https://fr.wikipedia.org/wiki/Datation_par_le_carbone_14La datation par le carbone 14, dite également datation par le radiocarbone ou datation par comptage du carbone 14 résiduel, est une méthode de datation radiométrique fondée sur la mesure de l'activité radiologique du carbone 14 (14 C) contenu dans la matière organique dont on souhaite connaître l'âge absolu, c'est-à-dire le temps écoulé depuis la mort de l'organisme …
C14-datering - Wikipedia
https://nl.wikipedia.org/wiki/C14-dateringC14-datering of koolstofdatering is een methode van radiometrische datering waarmee de ouderdom van organisch materiaal en ecofacten wordt bepaald met behulp van de isotoop koolstof-14.Koolstof-14 (14 C) is een isotoop van koolstof die in onze atmosfeer uit stikstofkernen gevormd wordt.Dit gebeurt door kernreacties ten gevolge van de kosmische straling waaraan …
List of solar storms - Wikipedia
https://en.wikipedia.org/wiki/List_of_solar_stormsActive stars produce disturbances in space weather and, if strong enough, in their own space climate.Science studies such phenomena with the field of heliophysics, which is an interdisciplinary combination of solar physics and planetary science.. In the Solar System, the Sun can produce intense geomagnetic and energetic particle storms capable of causing severe …
放射性炭素年代測定 - Wikipedia
https://ja.wikipedia.org/wiki/放射性炭素年代測定放射性炭素年代測定(ほうしゃせいたんそねんだいそくてい、英語: radiocarbon dating )は、自然の生物圏内において放射性同位体である炭素14 (14 C) の存在比率が1兆個につき1個のレベルと一定であることを基にした年代測定方法である 。 対象は動植物の遺骸に限られ、無機物及び金属では測定が ...
Younger Dryas impact hypothesis - Wikipedia
https://en.wikipedia.org/wiki/Younger_Dryas_impact_hypothesisThe Younger Dryas impact hypothesis (YDIH) or Clovis comet hypothesis is a speculative attempt to explain the onset of the Younger Dryas (YD) as an alternative to the long standing and widely accepted cause due to a significant reduction or shutdown of the North Atlantic "Conveyor" in response to a sudden influx of fresh water from Lake Agassiz and deglaciation in North …