<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">radiocarbon dating</topic></authority><related type="broader"><topic>dating</topic></related><variant type="other"><topic>C-14 dating</topic></variant><variant type="other"><topic>carbon dating</topic></variant><variant type="other"><topic>carbon-14 dating</topic></variant><variant type="other"><topic>dating, C-14</topic></variant><variant type="other"><topic>dating, carbon-14</topic></variant><variant type="other"><topic>dating, radiocarbon</topic></variant> <note xml:lang="en"><![CDATA[ Method of dating, based on the known half-life of carbon-14, by measuring the amount of low-level radioactivity of carbon remaining in ancient and dead material of organic origin and thus determining when a plant or animal had died. ]]></note></mads>