Sentence examples for relative dating from inspiring English sources
noun
A method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock.
We demonstrate that intra-crystalline amino acid racemisation (AAR) can be applied as a relative dating tool in Pleistocene A. palmata samples that have suffered heavy dissolution and are therefore unsuitable for U-series analyses.
Estimating the dates of these remains is essential but difficult: sometimes adjacent rock layers allow radiometric dating, which provides absolute dates that are accurate to within 0.5%, but more often paleontologists have to rely on relative dating by solving the "jigsaw puzzles" of biostratigraphy.
Five visual opsins have previously been cloned and characterized from the pouched lamprey (Geotria australis) [ 36] and were therefore included in our phylogenetic analyses to provide relative dating.
Relative dating based on the examination of several thousand index fossils of insects (dipteran insects, for example, were represented by 948 impressions), assigned the present fragments to the Jurassic/Cretaceous boundary [ 38] at about 145 Mya.
Even without such knowledge, hydration rims are useful for relative dating within a region of uniform climate.
Subsequent subdivision of these eras into specific geologic periods finally provided the hierarchy for describing the relative dating of geologic events.
In contrast to these expectations, it seemed to be of minor importance for the reaction to the questionnaire if the death of the relative dated back four weeks or three months.
Her victims include relatives, dating services and companies.
This is truly the heartland of the "australopiths," archaic hominid relatives dating (in this region) to between about three million and one-and-a-half million years ago.
And back in 2010, a team led by paleoanthropologist Sergio Almécija, now at George Washington University in Washington, D.C., began arguing that even earlier human relatives, dating to 6 million years ago very soon after the human-chimp evolutionary split already had humanlike hands as well.
No significant differences in disclosure by disease severity were found for friends, relatives, dating partners or neighbors.
