We determined 35 major, minor and trace elements in sandstone samples taken from building blocks of 19 Angkor temples and
from an old and a new quarry using INAA. We also characterized the sandstone samples with conventional microscopy and electron
microprobe analysis. Using cluster analysis, we found no straightforward correlation between the chemical/petrological properties
of the sandstones and a presumed period of individual temples construction. The poor correlation may result either from the
inherent inhomogeneity of sandstone or just reflect the diversity of quarries that supplied building blocks for the construction
of any particular temple.