Geology Reference
In-Depth Information
Figure 4.3
Radiation detectors in their holes. The detector is shielded by a
simple inverted plastic drinking cup.
should be a metre deep, but it is more important that all the placements are
very similar than that they conform to some supposed sampling optimum.
Once retrieved, the detector films are placed in containers that shield them
from further exposure to ionising radiation and are transported as quickly
as possible to a specialist laboratory. Fortunately, the tedious business of
track counting has now been almost completely automated, but the results
still require careful interpretation in the light of underlying soil and rock
structures.
