Arbitrary Unit 115, noncultural

Select Another Study

Tree-Ring Dates (listed in descending order by outside date and suffix)

Inside Date (A.D.)
Outside Date (A.D.)
Tree Species
PD
FS
PL
Tree-Ring Laboratory No.
Comments
1154fp
1229vv
juniper
103
5
1
372
TRL SAYS 372(A,B)
733fp
1036++vv
juniper
103
4
2
371

PD = provenience designation; FS = field specimen; PL = point-location number.

Date symbol explanations (from the Laboratory of Tree-Ring Research, Tucson, Arizona):

  • B Bark is present.
  • r Less than a full section is present, but the outermost ring is continuous around the available circumference.
  • v A subjective judgment that, although there is no direct evidence of the true outside on the sample, the date is within a very few years of being a cutting date.
  • vv There is no way of estimating how far the last ring is from the true outside; many rings may be lost.
  • + One or a few rings may be missing near the outside whose presence or absence cannot be determined, because the series does not extend far enough to provide adequate cross dating.
  • ++ A ring count is necessary beyond a certain point in the series because cross dating ceases.