Each of a number of concentric rings in the cross section of a tree trunk, representing a single year’s growth.
- The calendar year of the tree ring with the fire scar in it was then recorded as the fire date.
- At each sampling height, the whole cross-section was considered and no information about the individual tree ring distributions was available.
- A variety of approaches have been employed to resolve this problem, ranging from analyses of historical data, to tree ring and fossil pollen records, to modeling efforts.
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