Dating geological specimens
The post-Hercynian structural evolution was therefore different according to the parts of this platform, with significant differential vertical tectonic movements.
The latter were at the origin of erosion, hiatus or sediments deposition according to areas.
We scientists who measure isotope ages do not rely entirely on the error estimates and the self-checking features of age diagnostic diagrams to evaluate the accuracy of radiometric ages.
Whenever possible we design an age study to take advantage of other ways of checking the reliability of the age measurements.
In the particular case that Morris highlighted, the lava flow was unusual because it included numerous xenoliths (typically consisting of olivine, an iron-magnesium silicate material) that are foreign to the lava, having been carried from deep within the earth but not completely melted in the lava.
Also, as the authors of the 1968 article were careful to explain, xenoliths cannot be dated by the K-Ar method because of excess argon in bubbles trapped inside [Dalrymple2006].
Know answer of question : what is meaning of Dating in Hindi dictionary?The paleomagnetism is a powerful tool to date formations that have age not constrained by paleontological, stratigraphical or radiochronological data.It was applied, on the western border of the Murzuq basin in Algeria (Saharan platform), to the Zarzaïtine formation, attributed to a Middle–Upper Triassic–Lower Jurassic age.It has provided numerous pieces of amber containing arthropod and micro-organism inclusions.The second lignitic series, exposed to the north of the fault, is rich in fossil wood but devoid of amber.