The new rift structure may follow the Precambrian and Paleozoic faults.
2.
The 2001 Gujarat earthquake was caused by movement on a previously unknown south-dipping fault, trending parallel to the inferred rift structures.
3.
The Northern Cordilleran volcanoes of northwestern British Columbia are disposed along short, northerly trending segments which are unmistakably involved with north-trending rift structures including synvolcanic grabens and grabens with one major fault line along only one of the boundaries ( half-grabens ) similar to those associated with the East African Rift, which extends from the Afar Triple Junction southward across eastern Africa.
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