Behold, there comes seven years of great plentythroughout all the land of Egypt: And there shallarise a er them seven years of famine; and all theplenty shall be forgo en in the land of Egypt; andthe famine shall consume the land; Genesis 41, 29-30
“ Crossdating is the recognition of the same ring pa ern in diﬀerent trees, so that the actual growth date of any one ring of the pa ern is the same in the diﬀerent trees and one may carry a chronology across from tree to tree. ” A.E. Douglass Journal of Forestry, 1941
Pueblo Bonito New Mexico (before it was excavated)
Tree-ring display at elementary school Photograph:Tom Swetnam
“ Tree-ring analysis is one of the most powerful tools available for the study of environmental change and the identiﬁcation of fundamental relationships between tree growth and climate. Edward Cook and Neil Pederson ” Uncertainty, Emergence, and Statistics in Dendrochronology
WHAT ARCHEOLOGISTS NEED TO KNOW ABOUTDENDRO-CHRONOLOGY IN MINNESOTA
DENDROCHRONOLOGY ISMUCH MORE THAN JUST COUNTING TREE RINGS.
Kurt Kipfmueller University of MinnesotaPhoto: Calvin Ferris
CURRENT PROJECTS How has the hydrology of Lake Winnipeg changed during the late Holocene? How has climate and human activity aﬀected forest ﬁres in the Boundary Waters? How is the snowpack in the central Rockies changing? How o en do severe ﬂoods occur on the Red River, and why?Does decadal climate variability aﬀect forest ecology and wildﬁre risks?