On Thu, 07 Jan 2016 14:43:01 -0600
dpb wrote:

But, the possibility of a time span of "decades" between growth rings
of any of the common trees we in rec.woodworking would even know
existed and growing in NA or any similar temperate climate is
essentially zero.

would not consider sequoia to be common
it is the only hexaploid tree
it is the tallest tree

much prefer the dendrochronologist analysis over yours or
rec.woodworking