Dendrochemical Evidence of the 1781 Eruption of Mount Hood, Oregon

  • Paul R. Sheppard
  • Russ Weaver
  • Patrick T. Pringle
  • Adam J. R. Kent
Part of the Advances in Global Change Research book series (AGLO, volume 41)


Dendrochronological responses to an eruption of Mount Hood, Oregon, including new dendrochemical evidence, are documented here. Mount Hood, a stratovolcano of the Cascade Volcanic Arc (Fig. 1a), is thought to have erupted in AD 1781, as determined from tree death dates (Pringle et al. 2008), ring-width reductions (Sheppard et al., 2008a), and historical documents (Cameron and Pringle 1986, 1987). Ring-width evidence alone can indicate past volcanic eruptions (Yamaguchi and Lawrence 1993), but elemental concentrations in tree rings also reflect environmental changes brought about by eruptions (Hughes 1988). Dendrochemistry has been useful in past research of eruptions (Pearson et al. 2005; Sheppard et al., 2008b), so it was tried on Mount Hood and its 1781 eruption.


Tree Ring Historical Document Fall Deposit Pseudotsuga Menziesii Ring Time 
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Laser ablation measurement work was done by the WM Keck Collaboratory for Plasma Spectrometry at Oregon State University.


  1. Cameron KA, Pringle PT (1986) Post-glacial lahars of the Sandy River basin, Mount Hood, Oregon. Northwest Sci 60:225–237Google Scholar
  2. Cameron KA, Pringle PT (1987) A detailed chronology of the most recent major eruptive period at Mount Hood, Oregon. Geol Soc Am Bull 99:845–851CrossRefGoogle Scholar
  3. Douglass AE (1941) Crossdating in dendrochronology. J Forest 39(10):825–831Google Scholar
  4. Hughes MK (1988) Ice-layer dating of the eruption at Santorini. Nature 335:211–212CrossRefGoogle Scholar
  5. Pearson C, Manning SW, Coleman M, Jarvis K (2005) Can tree-ring chemistry reveal absolute dates for past volcanic eruptions? J Archaeol Sci 32:1265–1274CrossRefGoogle Scholar
  6. Pringle PT, Pierson TC, Cameron KA, Sheppard PR (2008a) Late 18th century Old Maid eruption and lahars at Mount Hood, Oregon–evidence from tree-ring dating and from observations of Lewis and Clark in 1805-6. 1st AmeriDendro Conference, June 23–27, 2008, Vancouver, British Columbia, CanadaGoogle Scholar
  7. Sheppard PR, Ort MH, Anderson KC, Elson MD, Vázquez-Selem L, Clemens AW, Little NC, Speakman RJ (2008) Multiple dendrochronological signals indicate the eruption of Parícutin Volcano, Michoacán, Mexico. Tree-Ring Res 64:97–108CrossRefGoogle Scholar
  8. Sheppard PR, Weaver R, Pringle PT, Kent A (2008b) Dendrochemical evidence of the 1780s Old Maid Eruption of Mount Hood, Oregon. 1st AmeriDendro Conference, June 23–27 (2008) Vancouver. British Columbia, CanadaGoogle Scholar
  9. Watmough SA, Hutchinson TC, Evans RD (1998) The quantitative analysis of sugar maple tree rings by laser ablation in conjunction with ICP-MS. J Environ Quality 27:1087–1094CrossRefGoogle Scholar
  10. Yamaguchi DK, Lawrence DB (1993) Tree-ring evidence for 1842-1843 eruptive activity at the Goat Rocks dome, Mount St. Helens, Washington. Bull Volcanol 55:264–272CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Paul R. Sheppard
    • 1
  • Russ Weaver
    • 2
  • Patrick T. Pringle
    • 3
  • Adam J. R. Kent
    • 4
  1. 1.Laboratory of Tree-Ring ResearchUniversity of ArizonaTucsonUSA
  2. 2.Heritage High SchoolVancouverCanada
  3. 3.Science DepartmentCentralia CollegeCentraliaUSA
  4. 4.Department of GeosciencesOregon State UniversityCorvallisUSA

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