Phillips and Hedges, in the scientific magazine Nature (1989), suggest that neutron radiation could be liable of wrong radiocarbon dating, whereas proton radiation could be responsible of the image formation of a human body on the Turin Shroud. On the other hand, no plausible physical reason has been proposed so far to explain the radiation source origin, and its effects on the linen fibers. Some recent studies, carried out at the Laboratory of Fracture Mechanics of Politecnico di Torino, found that it is possible to generate neutron emissions from brittle failure of natural rocks in compression through phono-fission reactions. Analogously, neutron flux increments, in correspondence to seismic activity, are a result of the same reactions. Russian scientists measured a neutron flux exceeding the natural background level by three orders of magnitude in correspondence to a not so strong earthquake (Magnitude 4 in Richter scale). The possibility is herein considered that neutron emissions from high-magnitude earthquakes have induced the image formation on the Shroud’s linen fibers through their capture by nitrogen nuclei, so providing also a wrong radiocarbon dating due to the unexpected increment in the \({\text{C}}_{6}^{14}\) content. Let us observe that, although the calculated integral flux of 1013 neutrons per square centimeter is 10 times greater than the cancer therapy dose, nevertheless it is 100 times smaller than the lethal dose.