In this paper an attempt was made to introduce the procedure of thermal data logging in shallow wells and to show the correlation between
the thermal anomaly and shallow tectonic events in the study area. In this context thermal well logging data of the Salman Farsi dam site is chosen.
The dam site area is located in south central part of Zagros mountain near to Shiraz, Iran. Thermal diagrams versus depth were performed and
preliminary considerations were made using least squares method. This
study showed a considerable thermal anomaly at the dam site. In this stage the Fourier thermal function was used to determine the thermal gradient
of the anomalous zone. Indications of geological informations revealed that the temperature anomaly may be attributed to hot ground water
impressed by a local minor fault.