Sentences with phrase «radiocarbon age»
The phrase "radiocarbon age" refers to the age of an object or sample estimated through radiocarbon dating. It measures the amount of a radioactive carbon isotope (carbon-14) remaining in an object, which helps determine how long ago it lived or was created. Full definition
«These include the sharp mud - over-peat contacts that are laterally continuous over 5 kilometers, changes in fossil foraminifera assemblages across the buried peat contacts, long - lasting submergence also derived from fossil foraminifera records, and radiocarbon ages of plant macrofossils taken from buried peat deposits that are consistent with other southern Cascadia earthquake chronologies derived from buried peat and tsunami deposits.»
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Figure 4 in B.A. Black et al.: This image shows annually averaged temperature anomalies in excess of 3 °C for the first year after the Campanian Ignimbrite (CI) eruption compared with spatial distribution of hominin sites with radiocarbon ages close to that of the eruption.
Ötzi's bone and tissue have yielded comparable radiocarbon age estimates (SN: 5/27/17, p. 13).
If fossil fuel emissions were rapidly curbed, the new t - shirt would only have the same radiocarbon age as something 100 years old, according to the study.
Calibrated radiocarbon ages show that the entire sequence spans the interval 17,830 ± 240 cal.
Many of the bones have relatively secure associated radiocarbon ages; all of which are more recent than 7200 cal BP [18,19,21].
Archaeologists and other scientists, who are more interested in the radiocarbon dating tool per se, quantify the MRE in their study region and apply the correction in the calibration of marine radiocarbon ages from that particular place.
Stuiver, Minze et al., «Radiocarbon age calibration back to 13,300 years BP and the 14C age matching of the German oak and US bristlecone pine chronologies,» Radiocarbon 28: 969 - 979, 1986 Return to Text
The confidence range would, however, be totally wrong for some other radiocarbon age.
Radiocarbon ages of plant macrofossils at the top of the buried peats are 195, 1280, and 1710 years old.
This information yields radiocarbon ages that can be equivalent to foraminifera ages, representing the time since these organisms were alive at the surface of the ocean and thus the age of sedimentation.
And the radiocarbon ages of those plants suggest that summertime temperatures in the region are the warmest they've been in tens of thousands of years.
At Wally's Beach, Alberta, a radiocarbon age of 10,980 purportedly dates extraterrestrial impact markers from sediment in the skull of an extinct horse.
The radiocarbon age of a certain sample of unknown age can be determined by measuring its carbon 14 content and comparing the result to the carbon 14 Dinosaur Bone (Illium bone of an Acrocanthosarus) Radio carbon dated at 19,000 years old!
The radiocarbon age of a certain sample of unknown age can be determined by measuring its carbon 14 content and comparing the result to the carbon 14
«In a recent treeline study from central Colorado, Carrara and McGeehin (2015) employed a combination of 23 radiocarbon ages and annual ring counts from 18 Rocky Mountain bristlecone pine (Pinus aristata) remnants found above the local present - day limits of such trees near the Continental Divide in central Colorado, which work revealed that the majority of the tree remnants «were established above the present - day limit of bristlecone pine from prior to 2700 cal.
1979 Wallace S. Broecker, «Revised Estimate for the Radiocarbon Age of North Atlantic Deep Water.»