Chemistry olympiad dating moon rock
If the rate at which craters are formed is known, then it is possible to estimate the absolute age of the surface.
The present rate of crater formation can be estimated from telescopic observations of various planet-crossing objects.
The problem becomes intricate if more than one event that affected the radiogenic isotope systems has occurred during the evolution of the rock.
Sizes and the size distribution can be estimated using various remote sensing techniques.
To establish a surface history, it is necessary to determine the sequence of various geologic events and, if possible, their duration.
Two basic types of dating are possible: absolute and relative.
These objects include small bodies of asteroidal appearance and the nuclei of comets.
The population of these objects can be estimated by statistical methods from the rates at which they are discovered by systematic searches of the sky (Shoemaker et al., 1979).