Oceans of people dating site what information can radiocarbon dating tell paleontologists
Even if the organisms have the same age, they wouldn’t have the same carbon 14 content and would thus appear to be of different radiocarbon age. Surfaces of oceans and other bodies of water have two sources of radiocarbon – atmospheric carbon dioxide and the deep ocean.
Deep waters in oceans get carbon 14 from mixing with the surface waters as well as from the radioactive decay already occurring at their levels.
The mixing of deep waters upward with surface waters—in a phenomenon known as upwelling—is latitude dependent and occurs predominantly in the equatorial region.
Carbon 14 is a naturally occurring isotope of the element carbon and is called radiocarbon. Another characteristic of carbon 14 is that it is continually being formed in the upper atmosphere as a product of the reaction between neutrons produced by cosmic rays and nitrogen atoms.
The dissolved inorganic carbon (DIC) used by the individuals to form their shells or in the precipitation of carbonate concretions will be older than the time of formation due to old DIC from the limestone.
This is termed “hard water effect” when the effect is from limestone.
with just the global marine reservoir correction) and a 1000 /-30BP radiocarbon date with a Delta R of 222 /-35 and the global marine reservoir correction included.
Freshwater systems running through limestone or fed by old water from springs can lead to falsely old ages in carbonate AMS dates.