Characteristics of radiometric dating

The ratio of normal carbon (carbon-12) to carbon-14 in the air and in all living things at any given time is nearly constant.Maybe one in a trillion carbon atoms are carbon-14.Our data for the Bangweulu and Irumide regions thus confirms the abundant reworking of crustal material since the Archean.The petrochemical and isotopic similarities between the 1880-1850 Ma igneous rocks in the Mansa region and the granitoids of the eastern Domes region corroborate the proposed north-south oriented convergent setting for the Paleoproterozoic magmatism in this region.However, at the moment of death, the amount of carbon-14 begins to decrease because it is unstable, while the amount of carbon-12 remains constant in the sample.

The favorable architecture and metal availability that resulted in the formation of these giant ore provinces is ultimately governed by the tectonic evolution that preceded the mineralization.Based on the currently available geochemical, radiometric and structural data, we proposed a regional geodynamic framework that includes a transition from an extensional to a collisional regime in the Karagwe-Ankole Belt.This framework accounts for the presence of arc-type meta-volcanites in the Karagwe-Ankole Belt and a sedimentary hiatus at 1375-1220 Ma.When these energetic neutrons collide with a nitrogen-14 (seven protons, seven neutrons) atom it turns into a carbon-14 atom (six protons, eight neutrons) and a hydrogen atom (one proton, zero neutrons).Since Nitrogen gas makes up about 78 percent of the Earth's air, by volume, a considerable amount of Carbon-14 is produced.

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