The Totschunda Fault is a major

active Active may refer to: Music * ''Active'' (album), a 1992 album by Casiopea * Active Records, a record label Ships * ''Active'' (ship), several commercial ships by that name * HMS ''Active'', the name of various ships of the British Royal ...

dextral (right-lateral) continental strike-slip fault in southeastern Alaska. It forms a link between the

Denali Fault The Denali Fault is a major intracontinental dextral (right lateral) strike-slip fault in western North America, extending from northwestern British Columbia, Canada to the central region of the U.S. state of Alaska. Location The Denali Fault i ...

to the northwest and the

Fairweather Fault The Queen Charlotte Fault is an active transform fault that marks the boundary of the North American plate and the Pacific plate. It is Canada's right-lateral strike-slip equivalent to the San Andreas Fault to the south in California. The Queen C ...

to the southeast. The northwestern end of the fault ruptured during the 2002 Denali earthquake. Based on

radiometric dating Radiometric dating, radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed. The method compares ...

of a

dike Dyke (UK) or dike (US) may refer to: General uses * Dyke (slang), a slang word meaning "lesbian" * Dike (geology), a subvertical sheet-like intrusion of magma or sediment * Dike (mythology), ''Dikē'', the Greek goddess of moral justice * Dikes ...

that cuts fault rock associated with the Totschunda Fault to about 114 million years ago, the fault zone was initiated during the latter part of the Early Cretaceous, associated with the accretion of the Wrangellia Terrane.

References

Seismic faults of Alaska {{Alaska-geologic-formation-stub