Alwynne B. Beaudoin - E-SCAPE - The SCAPE file - Cypress
region - Quaternary Stratigraphy and Glacial History - Tephras
in western North America

Cypress Hills region - Quaternary Stratigraphy and Glacial History
Tephras in western North America

Bacon, C. R. 1983
Eruptive History of Mount Mazama and Crater Lake Caldera, Cascade Range, U.S.A. Journal of Volcanology and Geothermal Research 18:57-115 Arc Volcanism, edited by S. Aramaki and I. Kushiro.
AEU SCI QE 521.5 J86

Bacon, C. R. 1983
The Precursory and Climactic Eruptions of Mount Mazama and Collapse of Crater Lake Caldera, Oregon. Geological Society of America Abstracts and Programs 15(5):330.

Beaudoin, A. B., and R. H. King 1994
Holocene Palaeoenvironmental Record Preserved in a Paraglacial Alluvial Fan in Sunwapta Pass, Jasper National Park, Alberta, Canada. Catena 22(227-248).
AEU SCI GB 400 C35

Beget, J. E. 1984
Tephrochronology of Late Wisconsin Deglaciation and Holocene Glacier Fluctuations near Glacier Peak, North Cascade Range, Washington. Quaternary Research 21:304-316.
AEU SCI QE 696 Q24

Book cover Carrara, P. E. 1992
A Late Pleistocene Volcanic Ash Couplet and the Timing of Deglaciation in Northeastern Washington. In American Quaternary Association (AMQUA) Program and Abstracts of the Twelfth Biennial Meeting. p. 65. August 24-26, 1992, University of California, Davis.
Reports a couplet of Glacier Peak and Mount St Helens set J ash, found at four sites in NE Washington. Radiocarbon dated about 12,000 yr BP. Notes that this age is older than the previously-reported (11,200 yr BP) age on Glacier Peak tephra. (16/12/2007).

David, P. P. 1970
Discovery of Mazama Ash in Saskatchewan. Canadian Journal of Earth Sciences 7:1579-1583.

Hallett, D. J., L. V. Hills, and J. J. Clague 1997
New Accelerator Mass Spectrometry Radiocarbon Ages for the Mazama Tephra Layer from Kootenay National Park, British Columbia. Canadian Journal of Earth Sciences 34:1202-1209.

Harris, A. G., E. Tuttle, and S. D. Tuttle 2004
Chapter 36: Crater Lake National Park. In Geology of National Parks. Sixth Edition, edited by A. G. Harris, E. Tuttle and S. D. Tuttle, pp. 527-540. Kendall/Hunt Publishing Company, Dubuque, Iowa, USA.
A brief review of the Park, including details about Crater Lake's physiography and biology, and a summary of the development of the crater and the volcano's history. Useful background for the Mazama story. Written for a non-technical readership. Short but useful. (06/04/2007).

Kittleman, L. R. 1979
Tephra. Scientific American 241(6):132-142.
AEU SCI Q 1 S417

Luckman, B. H., M. S. Kearney, R. H. King, and A. B. Beaudoin 1986
Revised 14C Age for St. Helens Y Tephra at Tonquin Pass, British Columbia. Canadian Journal of Earth Sciences 23:734-736.

Mathewes, R. W., and J. A. Westgate 1980
Bridge River Tephra: Revised Distribution and Significance for Detecting Old Carbon Errors in Radiocarbon Dates of Limnic Sediments in Southern British Columbia. Canadian Journal of Earth Sciences 17:1454-1461.

Mehringer Jr, P. J., J. C. Sheppard, and F. F. Foit Jr 1984
The Age of Glacier Peak Tephra in West-Central Montana. Quaternary Research 21:36-41.
AEU SCI QE 696 Q24

Mullineaux, D. R., J. H. Hyde, and M. Rubin 1975
Widespread Late Glacial and Postglacial Tephra Deposits from Mount St. Helens Volcano, Washington. Journal of Research of the United States Geological Survey 3:329-335.

Porter, S. C. 1978
Glacier Peak Tephra in the North Cascade Range, Washington: Stratigraphy, Distribution, and Relationship to Late Glacial Events. Quaternary Research 10:30-41.
AEU SCI QE 696 Q24

Reasoner, M. A., and R. E. Healy 1986
Identification and Significance of Tephras Encountered in a Core from Mary Lake, Yoho National Park, British Columbia. Canadian Journal of Earth Sciences 24:1991-1999.

Sarna-Wojcicki, A. M., D. E. Champion, and J. O. Davis 1983
Holocene Volcanism in the Conterminous United States and the Role of Silicic Volcanic Ash Layers in Correlation of Latest- Pleistocene and Holocene Deposits. In Late Quaternary Environments of the United States Volume 2 The Holocene, edited by H. E. Wright Jr, pp. 52-77. University of Minnesota Press, Minneapolis, Minnesota, USA.

Book cover Sarna-Wojcicki, A. M., K. R. Lajoie, C. E. Meyer, D. P. Adam, and H. J. Rieck 1991
Tephrochronologic Correlation of Upper Neogene Sediments Along the Pacific Margin, Conterminous United States. In Quaternary Nonglacial Geology, Conterminous United States, edited by R. B. Morrison, pp. 117-140. The Geology of North America, Volume K-2. Geological Society of America, Boulder, Colorado, USA.

Waters, P. L., and N. W. Rutter 1984
Utilizing Paleosols and Volcanic Ash in Correlating Holocene Deposits in Southern Alberta. In Correlation of Quaternary Chronologies, edited by W. C. Mahaney, pp. 203-223. GeoBooks, Norwich, England, UK.
Mostly focusses on Mazama ash.

Westgate, J. A., and A. Dreimanis 1967
Volcanic Ash Layers of Recent Age at Banff National Park, Alberta. Canadian Journal of Earth Sciences 4:155-161.
AEU SCI QE 1 C21 This is the classic foundation reference for tephra work in western Canada. Reports the occurrence of three layers (Bridge River, St Helens, Mazama) from a section at Saskatchewan Crossing. The section is still there and has been visited by generations of students on field trips.

Book cover Westgate, J. A., D. G. W. Smith, and H. Nichols 1969
Late Quaternary Pyroclastic Layers in the Edmonton Area, Alberta. In Pedology and Quaternary Research, edited by S. Pawluk, pp. 179-186. Edmonton, Alberta, Canada.

White, J. M., and G. Osborn 1992
Evidence for a Mazama-like Tephra Deposited ca. 10 000 BP at Copper Lake, Banff National Park, Alberta. Canadian Journal of Earth Sciences 29:52-62.

Zoltai, S. C. 1989
Late Quaternary Volcanic Ash in the Peatlands of Central Alberta. Canadian Journal of Earth Sciences 26:207-214.
AEU SCI QE 1 C212 Identified three tephras in peat deposits. Related these to the Bridge River, St Helens Y, and Mazama tephras. Notes that the ash layers are complex, which may suggest either repeated eruptive events within a short time, or perhaps redeposition of tephra from primary context.

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This presentation has been compiled and is © 1998-2011 by
Alwynne B. Beaudoin (
Latest update: 21 May 2012