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Date Types and Terminology
Cutting dates (B, G, L, v- dates)
Last year of tree growth before death.
Bark, bark patina, or beetle galleries must be present.
Seasonality in Cutting dates
Latewood is complete (“comp”- dates). Tree was felled after growing season.
Last ring growth is incomplete (“inc”-dates). Tree was felled during growing season.
Noncutting dates (“vv” and “++” dates)
“++”-dates: possible absent rings near outside of ring growth. Probably deadwood use.
“vv” dates indicate probable erosion of outer rings from a sample.
Anomalous” tree-ring dates
Those dates that don’t “fit” with the other beams from a structure/room, etc. Most likely caused by the reuse of timber, the use of dead wood, stockpiling, repair/remodeling, or other human behaviors.