Sentence examples for age constraint for from inspiring English sources
The density of craters superposed on Mie ejecta is consistent with a Late Hesperian age and provides a minimum age constraint for the mantle's emplacement.
For example, the minimum age constraint for the split between Rhynchocephalia and Squamata is 228 Mya, and the expected posterior estimate is between 228.0 and 239.4.
Additional, a maximum age constraint for the phyllostomids (3) was set with an exponential distribution to 34 MYA with an arbitrarily lower limit of 11.5 MYA.
Although previous studies have recognized a long gap in the fossil record of the angiosperm stem lineage [ 13, 21, 37], there is no indisputable argument in favor of one particular maximum age constraint for the crown node of angiosperms.
It is remarkable, however, that Lundberg et al. arbitrarily selected 144 my (informed by the fossil record of actinopterygians) as the maximum age constraint for the split of gymnotiforms and siluriforms.
The fossil record suggests that the divergence of the two phocid subfamilies occurred sometime prior to the middle Miocene (> 14.6 mya) [ 77] and we used 16 mya as a minimum age constraint for the corresponding node (also see [ 23]).
These radiocarbon determinations provide age constraints for both Pleistocene and early Holocene rock art in western Arnhem Land.
The OSL ages present plausible minimum age constraints for the retreat of the Laurentide Ice Sheet (LIS) towards the end of the Late Wisconsinan glaciation.
Ultimately, in combination with high-resolution and high-accuracy stratigraphic methods, such as magneto-, bisotopictopic, and lithostratigraphy, tephrostratigraphy can provide more reliable and detailed age constraints for marine sediment sequences.
In this paper we present SHRIMP zircon U/Pb age constraints for one such problematic unit in the Ribeira Belt – the Iporanga Formation – and discuss the significance of this age with regards to the timing of Neoproterozoic glacial events in southeast Brazil.
Age constraints for the correlation of the magnetic polarity stratigraphy to the GPTS [35] are provided by biochronological data.
