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Non-destructive techniques are increasingly common (e.g. the use of MRI scanning to characterize grains, pore fluids, pore spaces (porosity) and their interactions (constituting part of permeability) but such expensive subtlety is likely wasted on a core that has been shaken on an unsprung lorry for 300 km of dirt road.

What happens to cores between the retrieval equipment and the final laboratory (or archive) is an often neglected part of record keeping and core management.

analyzing and dating geological specimens-41analyzing and dating geological specimens-48

However it is also possible to take core samples from the wall of an existing borehole.

Naturally occurring radio-isotopes are also used by archaeologists and related specialists to help establish the authenticity and age of specimens.

Naturally occurring radio-isotopes are often used by geologists to establish the ages of rocks.

The purity or composition of materials can be established by means of radio-isotopes.

The radiation emitted by different radio-isotopes can be used for rapid, highly accurate measurement of material thickness, including the thickness of platings or coatings.




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For him, Hermetism is the Greek version of a redaction of Egyptian literature. Let us conjecture the emergence, under the first three Ptolemies, of a Greek elitist version of the Egyptian religion, a Graeco-Egyptian religion, and this among the upper native classes (of priest, scribes, administrators & high-skilled workmen).