Zobrazeno 1 - 5
of 5
pro vyhledávání: '"R. G. McGimsey"'
Autor:
William T. Perkins, R. G. Mcgimsey, William K. Hart, Shari J. Preece, John A. Westgate, Nicholas J. G. Pearce
Publikováno v:
Geosphere. 10:1020-1042
The White River Ash, a prominent stratigraphic marker bed in Alaska (USA) and Yukon (Canada), consists of multiple compositional units belonging to two geochemical groups. The compositional units are characterized using multiple criteria, with combin
Publikováno v:
Canadian Journal of Earth Sciences. 32:741-748
Although the White River Ash was first recognized by F. Schwatka in 1883, the source of this widespread bilobate Plinian deposit in northwestern Canada and adjoining eastern Alaska has not been definitively identified. Recent investigations disclose
Autor:
S. L. Simpson, R. G. McGimsey, John E. Gray, T. K. Bundtzen, J. W. Cady, Richard J. Goldfarb, H. E. Belkin, Robert B. Blodgett, Marti L. Miller
Publikováno v:
Open-File Report.