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  • Established by the pioneer of dendrochronology.

    A.E. Douglass, originator of the science of tree-ring dating, founded the Laboratory of Tree-Ring Research in 1937.
    https://ltrr.arizona.edu/about/history

  • Housed in a custom facility.

    A building constructed in 2013 provides lab and office space, augmented by a building recently renovated as a wood sample archive.
    https://ltrr.arizona.edu/building

  • Pursuing interdisciplinary research.

    Dendrochronology helps reconstruct environmental change, and unravel processes in ecosystems and human societies; researchers in many parts of the world collaborate with the Laboratory of Tree-Ring Research.
    https://ltrr.arizona.edu/research

  • Educating students and the public.

    The Laboratory of Tree-Ring Research teaches undergraduate and graduate courses; its outreach program also reaches thousands of children and adults in the community.
    https://ltrr.arizona.edu/courses

  • Established by the pioneer of dendrochronology.

  • Housed in a custom facility.

  • Pursuing interdisciplinary research.

  • Educating students and the public.

News

Akrotiri, Thera: the excavated remains of the Minoan town destroyed by the eruption (photo: Gretchen Gibbs).

Re-dating the most important marker event for the ancient Aegean.

Thursday, August 16, 2018

Charlotte Pearson of the LTRR is lead author on a paper revising the radiocarbon dating of the Thera eruption.

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Trouet with award information in the background

University award for the LTRR's Valerie Trouet

Monday, April 2, 2018

The University of Arizona has conferred a Distinguished Scholar Award on Tree-Ring Lab faculty member Valerie Trouet.

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The group of researchers in Guatemala, ready for fieldwork.

A documentary film shows the work of LTRR researchers in Guatemala

Friday, February 9, 2018

A short documentary film is the first of several describing the work of LTRR researchers in Guatemala.

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LTRR researchers link extreme European weather to jet stream changes

Tuesday, January 16, 2018

Valerie Trouet and Matt Meko from the LTRR, with Flurin Babst, reconstruct the jet stream.

Read more
  • Read All News

Thursday, August 23

  • 2:00 PM to 3:00 PM
    FREE Docent-led Tour

Wednesday, September 5

  • 11:45 AM to 1:00 PM
    Brown-Bag Seminar

Wednesday, September 12

  • 11:45 AM to 1:00 PM
    Brown-Bag Seminar

See Calendar →

Laboratory of Tree-Ring Research | Home

Bryant Bannister Tree-Ring Building, 1215 E. Lowell Street, Tucson, AZ 85721-0045, USA office@ltrr.arizona.edu 520-621-1608

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