The loneliest tree in the world (part3)
Over the past few decades, scientists have proposed a concept called the New Geological Age called Anthropocene, which is still much debated. This period is in fact the beginning of significant human effects on the geological elements and ecosystem of the planet Earth. Various dates have been suggested for the beginning of the Anthropocene, including the beginning of the Agricultural Revolution about 12,000 to 15,000 years ago, or the rise of atmospheric carbon in the mid-1800s with the Industrial Revolution, or the rise of radiocarbon in the atmosphere with the onset of nuclear energy.
Each of these periods has a distinct indicator. For example, to mark the beginning of the Holocene, scientists drilled a hole in the Greenland glacier plate, and hydrogen changes that occurred there indicate that the plate is from the last ice age.
In line with this, the researchers created a carbon in the cavity inside the citrus spruce and analyzed its carbon 14. Because growing plants receive carbon, the carbon isotope 14 must be present in tree rings of varying concentrations. As expected, the researchers found that carbon monoxide had risen to 14 barrels between October and December 1965 (after this date, international treaties gradually limited nuclear testing).
Chris Turner discovered that these radiocarbon markers in some of the world’s most remote plants indicate that carbon-14 is one of the true global markers, especially since most nuclear tests have taken place in the Northern Hemisphere and the island. Campbell is in the most remote southern part of the earth. Based on these findings, Turner suggested that the date of the beginning of the Anthropocene era be 1965, and in a way, the equation for the existence of such a single tree in this region, which is the farthest point from the nuclear currents, was determined!
Finally yet importantly, the key to choosing a golden spike is that it must be very long. The half-life of carbon-14 is approximately 6,000 years, indicating that the present value is lost every 6,000 years.
So even after tens of thousands of years, the amount of carbon-14 is still measurable, allowing future geologists to pinpoint a more accurate date for this new geological age. Thus, the secret of this tree’s loneliness was discovered!