Sentence examples for terrestrial samples from inspiring English sources

*Variation of isotopic abundance in terrestrial samples limits the precision of the atomic weight given.

It concerns in situ investigations as well as analysis of extra terrestrial samples on Earth.

Little is known about the bombardment history of the early Earth following the Moon-forming giant impact because of the extreme paucity of terrestrial samples more than four billion years old.

Other gains have come from geochemical research on terrestrial samples combined with the new understanding of internal processes brought on by the recognition of plate tectonics, study of the terrestrial planets as a group, and advances in numerical modeling of the physical processes that lead to planetary formation.

They can for example distinguish between marine and terrestrial samples.

Figure 2 Radiocarbon ages of molluscs and terrestrial samples.

Therefore, both the aquatic sample and a modern terrestrial sample are dated.

The reservoir age R is the difference in 14C age between an aquatic sample and a contemporaneous terrestrial sample.

Food crusts on pottery have the same or slightly larger 14C ages than the youngest terrestrial sample.

It is calculated by subtracting the 14C age of a terrestrial sample 14 C T from the 14C age of the contemporaneous aquatic sample 14 C A : R = 14 C A − 14 C T. (1).

Variability increases again in zone 4. In three cases, R direct can be calculated by comparing the 14C ages of a shell sample and a terrestrial sample from the same depth (Table 3).