Tree ring dating examples
The relative dating techniques are very effective when it comes to radioactive isotope or radiocarbon dating.
However, not all fossils or remains contain such elements.
In 2010, while researching the effects of climate change over the past 20 years in Mongolia, his team serendipitously stumbled across a stand of pines that has since revealed the longest-ever climate record in the region.Biostratigraphy: An extended version of stratigraphy where the faunal deposits are used to establish dating.Faunal deposits include remains and fossils of dead animals.When this record was combined with the other tree samples, we went back about 1,100 years in all — that was really astounding.This is the first tree-ring record that is providing a climatic context for some of the great changes in Asian and world history.
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Rain may have provided just the fuel Khan and his troops needed to create the largest land empire in human history.