Rocky Mountain Tree-Ring Research is a nonprofit research organization founded in 1997 by Peter M. Brown.  We provide expertise in tree-ring collection, dating, and analysis to answer a variety of basic and applied questions in fire and forest history, climatology, and ecosystem ecology, restoration, and management. 

NEW! The photo gallery has been updated and combined with the projects page!  It now includes images of tree rings along with some photos from recent projects with short project descriptions.  Please note that all images are copyrighted; please contact me before any use.  

NEW! The OldList also has been updated, including a new record holder over 5000 years old!  Oldlist is a database of known (or, in some cases, suspected) maximum ages that individual trees of different species have attained at the time of sampling from around the world.  Also have a look at the Eastern OLDLIST, focused on old trees in the eastern US and maintained by Dr. Neil Pederson at Lamont-Doherty Earth Observatory Tree-Ring Laboratory.

My basics page contains some practical information on sampling, sample preparation, and how to keep your increment borers clean and sharp.  Also, my sons are making and selling increment core mounts. These are 4 foot (1.22m) long sticks sold in bundles of 30 or 50 at US$1.40 per stick.  Note that the groves are cut for 4.3mm cores, but will fit 5.15mm cores by trimming the shoulders down slightly or using more glue. Please contact me to order.  We can accept credit cards or checks for payment.

A fire-scarred ponderosa pine from Mount Rushmore National Memorial, Black Hills, South Dakota
(click for a larger version)

For further information:
Dr. Peter M. Brown, Director
Rocky Mountain Tree-Ring Research
2901 Moore Lane, Ft. Collins, CO 80526 USA
Ph: 970.229.9557
E-mail: pmb [at] rmtrr [dot] org