A Guide to Dating Methods for the Determination of the Last Time of Movement of Faults.

摘要

This is a guide to methods of dating the past activity of faults with emphasis on methods to dating movement over the past 500,000 years. This period of time is of most concern to nuclear power plant siting regulations which state that a fault is 'capable' (i.e. shows movement at or near the ground surface at least once within the past 35,000 years or movement of a recurring nature within the past 500,000 years). The guide presents: Chronographic methods; isotopic methods - primeval radioactive elements; and isotopic methods - cosmic ray produced radioactive elements.