Sentences with phrase «bulk organic dates»
Not exact matches
In environments like Antarctica that seldom preserve foraminifera — tiny organisms whose shells are the gold standard for dating ocean sediments — researchers have relied on dating bulk organic matter.
https://eos.org/
Radioactive dating of the uranium and lead found in the minerals (and organic carbon and light isotope carbon (C13) in bulk - rock carbonates) within the trace fossils that bacteria etched into the glass around 3.342 + / - 0.068 billion years ago (Jonathan Amos, BBC News, October 12, 2010; Fliegel et al, 2010; Grosch et al, 2009; and Furnes et al, 2004).)