Skip Navigation
New insights into Alaska plate tectionics and the 1961 Alaska earthquake

John Reeder

John Reeder
Geologist

Wednesday, April 5, 2017
CSL  422 – 1 pm

Abstract
Alaska plate tectonics and the great 1964 Alaska earthquake have not been well understood due to an active WSW subducting Yakutat plate not being acknowledged to exist in Alaska.  It is positioned throughout southcentral Alaska, being beneath the North American plate and above the NNW subducting Pacific plate.  The eastern part of the great 1964 Alaska earthquake occurred as sudden NNW subduction movements of the Pacific plate beneath sudden WSW subduction movements of the Yakutat plate.  This talk defines a new tectonic model for Alaska as well as redefines the mechanics of the 1964 Alaska “megathrust” earthquake.  Evidence is also presented for past 1964 Alaska earthquakes as well as for past “megathrust” earthquakes between the Yakutat and North American plates.

Pin It on Pinterest

San Diego State University Logo
Mount Laguna Observatory 50th Anniversary
ARCS members presenting large check to President de la Torre, Dean Roberts, with 11 others posing behind on steps.
SDSU Alumni Crowdfunding
John Reeder
preload image
preload image
Shares
Share This
preload imagepreload image