  An accurate understanding of the relationship between the impact conditions
and the degree of shock-induced thermal metamorphism in meteorites allows the
impact environment in the early Solar System to be understood. A recent
hydrocode has revealed that impact heating is much higher than previously
thought. This is because plastic deformation of the shocked rocks causes
further heating during decompression, which is termed post-shock heating. Here
we compare impact simulations with laboratory experiments on the impact
devolatilization of calcite to investigate whether the post-shock heating is
also significant in natural samples. We calculated the mass of CO$_2$ produced
from the calcite, based on thermodynamics. We found that iSALE can reproduce
the devolatilization behavior for rocks with the strength of calcite. In
contrast, the calculated masses of CO2 at lower rock strengths are
systematically smaller than the experimental values. Our results require a
reassessment of the interpretation of thermal metamorphism in meteorites.
