Sentence examples for dates obtained on from inspiring English sources

The age model was established on the basis of radiocarbon dates obtained on marine bivalve mollusk shells.

The dates, obtained on materials such as bone tools and ornaments made of animal teeth, painted a disturbing picture: Whereas upper layers attributed to modern humans clocked in at no older than 35,000 years, artifacts from the Châtelperronian levels ranged from 21,000 years ago, when Neandertals were long extinct, to 49,000 years ago, before the Châtelperronian actually began.

Figure 4 Timing of major HEMI events (plotted as black squares) on the eastern coast of Taveuni Island, Fiji, based on U Th dates obtained from the largest RPCBs observed on the fringing reefs.

The numerator for mortality rates was the number of deaths from any cause in calendar year 2007 among the study population (based on death dates obtained from the Medicare denominator file).

Divergence dates obtained by the different calibration criteria on the total evidence dataset (one node vs. two nodes) resulted in similar average radiation times, although the confidence intervals observed with the one-node calibrations were approximately 10% more important.

Radiocarbon dates were obtained on peat and plant macrofossils sampled from either side of the proposed hiatus at two different but closely-spaced (<20 m) locations across the mire.

As a demonstration of this, we simulated a larger set of 100 admixed individuals as above, for both 75%YRI/255% CEU and 90%YRI/100% CEU scenarios, and compared the date estimates obtained on subsets of 5 100 of these individuals with two different reference pairs (Table S7 and Table S8).

Estimates were made by interpolating values obtained on dates on either side of the target date.

Such techniques have had an enormous impact on scientific knowledge of Earth history because precise dates can now be obtained on rocks in all orogenic (mountain) belts ranging in age from the early Archean (about 4 billion years old) to the early Neogene (roughly 20 million years old).

At 4 8 weeks postpartum (based on estimated delivery date obtained at the first ANC visit) the CCHAs contacted the women for follow up and if a woman did not show up at the facility, a home visit was conducted during which she was invited to participate in a follow-up structured interview.

For each cow, information was obtained on calving date in 1997, parity, date of removal, disease date and disease code.