isotope fractionation
11Kinetic fractionation — is a process that separates stable isotopes from each other by their mass during unidirectional processes.One naturally occurring example of kinetic fractionation is the evaporation of seawater to form clouds. In this instance, isotopically… …
12Abiogenic petroleum origin — is a largely abandoned hypothesis that was proposed as an alternative to theory of biological petroleum origin. It was relatively popular in the past, but it went largely forgotten at the end of the 20th century after it failed to predict the… …
13δ18O — Foraminifera samples …
14Paleothermometer — A paleothermometer is a methodology for determining past temperatures using a proxy found in a natural record such as a sediment, ice core, tree rings or TEX86.Common paleothermometersd18oThe ratio of 18o to 16o, usually in foram tests or ice… …
15Mikkel Frandsen — Born 1892 Ringkøbing Skjern municipality …
16Uranium — Protactinium ← Uranium → Neptunium Nd …
17Radiocarbon dating — (sometimes simply known as carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon 14 (14C) to estimate the age of carbon bearing materials up to about 58,000 to 62,000 years.[1] Raw, i.e. uncalibrated …
18Carbon-13 — Infobox isotope alternate names = symbol =C mass number =13 mass = num neutrons =7 num protons =6 abundance =1.109% halflife = error halflife = background =#F99 text color = decay product = decay symbol = decay mass = decay mode1 = decay energy1 …
19Ice 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… …
20Isoscapes — are spatially explicit predictions of elemental isotope ratios (δ) that are produced by executing process level models of elemental isotope fractionation or distribution in a Geographic Information System (GIS). The word isoscape is derived from… …
