isotopic analysis of ice
1Ice core — An ice core is a core sample from the accumulation of snow and ice over many years that have re crystallized and have trapped air bubbles from previous time periods. The composition of these ice cores, especially the presence of hydrogen and… …
2European Project for Ice Coring in Antarctica — The European Project for Ice Coring in Antarctica (EPICA) is a multinational European project for deep ice core drilling in Antarctica. Its main objective is to obtain full documentation of the climatic and atmospheric record archived in… …
3dating — 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 …
4Radiometric 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]… …
5Marine isotope stage — 5 million year history Sections …
6Allan Hills 84001 — Meteorite fragment ALH 84001 Type Achondrite Class Martian meteorite Group ALH …
7Attribution of recent climate change — Further information: Global warming, Climate change, and Climate change denial Attribution of recent climate change is the effort to scientifically ascertain mechanisms responsible for recent changes observed in the Earth s climate …
8Quaternary glaciation — The Ice Age redirects here. For other uses, see Ice age (disambiguation). Last ice age redirects here. This term is also used for the last glacial period of the Quaternary glaciation. Northern Hemisphere glaciation during the Last Glacial Maximum …
9On Your Knees Cave — (49 PET 408) is an archaeological site located in southeastern Alaska. Human remains were found at the site in 1996 that dated between 9,730 ±60 and 9,880±50 radiocarbon YBP[1] or a calendrical date of 10,300 YBP.[2] In addition to human skeletal …
10Gamma ray spectrometer — A Gamma Ray Spectrometer, or (GRS), is an instrument for measuring the distribution (or spectrum see figure) of the intensity of gamma radiation versus the energy of each photon. Gamma rays are electromagnetic radiation at the short wavelength,… …
