This tree rarely produces even a trace of an extra ring; on the contrary, a typical bristlecone pine has up to 5 percent of its rings missing. You will receive emails containing news contentupdates and promotions from The New York Times. Hoard of the rings: It is for specimens which only date back a few thousand years. To leave comments please complete the form below. Jun 05 Read
Colm Gorey is a journalist with Siliconrepublic.
Several formats for citing radiocarbon results have been used since the first samples were dated. Nearly 99 percent of all carbon on Earth is Carbon, meaning each atom has 12 neutrons in its nucleus. If anything, the tree-ring sequence suffers far more from missing rings than from double rings.
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