One of the trenches also has a visible tephra layer which has been confirmed as representing the major Campanian Ignimbrite eruption and is accurately dated at the source area to 39,280 ± 55 yrs and radiocarbon determinations have added to chronological resolution at the site.
This is the first mention of Pilate ever found that can be accurately dated within his lifetime.
Volcanic ash is ideal for radiometric dating, and this has enabled the Mistaken Point fossils to be dated at approximately 565 million years old making them the oldest complex "Ediacara-type" fossils that have been accurately dated at this time.
Pregnancies of >24 wk of gestation at booking could not be accurately dated by ultrasound and were dated by maternally recalled last menstrual period (LMP).
The DTL reconciliation problem on undated trees is the most common version of the DTL reconciliation problem and arises whenever the species tree cannot be accurately dated, as is usually the case with large gene families, and in applications such as reconciliation-based species tree reconstruction.
If these hoards are found later and can be accurately dated, they can serve as a proxy to help characterize certain periods of history.
Dendrochronology, by which a piece of wood can be accurately dated, has established that the panel on which it is painted was cut down around 1593.
Historical data regarding past avalanches in Argentina are scarce, but sufficiently old trees can show signs of past avalanche episodes that can be accurately dated using dendrochronological methods.
Intact moss shoots can thus be accurately dated using 'bomb-peak' radiocarbon dating, where a peak in recent atmospheric radiocarbon occurred when large quantities of artificially produced 14C were injected into the atmosphere during the period of nuclear testing mostly in the late 1950s and early 1960s12,46.
The presence of the German ore miners, known locally as sasi (саси, Saxons), cannot be accurately dated.
If an artifact's origin can be accurately dated, then it gives a reference date for the layer in which it is found.
