Tree ring dating (dendrochronology) Dr Don Batten 3 February 2006
"Tree ring dating (dendrochronology) has been used in an attempt to extend the calibration of carbon-14 dating earlier than historical records allow…Recent research on seasonal effects on tree rings in other trees in the same genus, the plantation pine Pinus radiata, has revealed that up to five rings per year can be produced and extra rings are often indistinguishable, even under the microscope, from annual rings. As a tree physiologist I would say that evidence of false rings in any woody tree species would cast doubt on claims that any particular species has never in the past produced false rings…Extended tree ring chronology is not an independent confirmation/calibration of carbon dating earlier than historically validated dates, as has been claimed." See article below.
"Tree ring dating (dendrochronology) has been used in an attempt to extend the calibration of carbon-14 dating earlier than historical records allow…Recent research on seasonal effects on tree rings in other trees in the same genus, the plantation pine Pinus radiata, has revealed that up to five rings per year can be produced and extra rings are often indistinguishable, even under the microscope, from annual rings. As a tree physiologist I would say that evidence of false rings in any woody tree species would cast doubt on claims that any particular species has never in the past produced false rings…Extended tree ring chronology is not an independent confirmation/calibration of carbon dating earlier than historically validated dates, as has been claimed." See article below.
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