抄録
The authors consider the fault movement involved in the fault formation from fault scale relational expression. When the active fault is assumed to be appears in surface of the earth, lead to the following; The active fault activity did not start Quaternary Era at the beginning all together but the starting point of C class active fault is two million years ago (Early Quaternary), B class active fault is 700 thousand years ago (Middle Pleistocene), A class active fault is 200 thousand years ago(Late Pleistocene). The fault at the beginning of quaternary cannot be changed to the active fault without multiple diastrophism. The majority of large scale fault (Length 20 kilometers or more) changes to the active fault. It is thought that major fault repeating faulting from pre-quaternary can become an active fault.
