After 7 years of research about Armanestans frigthening erathquake, Sanfranisko’s severe erathquake, Mecz, Ruinous erathquake, Philipin, Tokyo 1923 erathquake, 1975’s erathquake in Chang Chin area, Iran erathquake such as Gilan erathquake, Ardahil, Tabas erathquake, Ghaen’s erathquake, Dasht bayaz erathquake Shiraz. This summery had resulted each of the erathquake either have been Volcanic source and or have been appeared through emerging of fault all of them have a commonfactor. In this article the factors of appearing an an erathquake have recognized and so the cause of befr and simultaneous of erathquake have analyzed and oltermined and so causes of creation a fault in all side have present and so cause of appearing mountains volcanic, have reconized.
Erathquake, element of creation a fault, veactionsof animals against erathquake, mountains volcanic
B.M. Mathematics Payamnoor of Univer sity Rasht