AI Article Synopsis
- Radiocarbon dating ((14)C) helps determine the age of carbon-containing materials, useful for studying up to 50,000 years old samples, and tracking the global carbon cycle.
- The absence of detailed atmospheric (14)C records before 12.5 thousand years ago has hindered the dating of Last Glacial period samples.
- New (14)C findings from Lake Suigetsu in Japan offer a complete timeline for terrestrial radiocarbon, enabling comparisons with other climatic data and revealing the relationship between global atmospheric and regional marine radiocarbon levels.
Article Abstract
Radiocarbon ((14)C) provides a way to date material that contains carbon with an age up to ~50,000 years and is also an important tracer of the global carbon cycle. However, the lack of a comprehensive record reflecting atmospheric (14)C prior to 12.5 thousand years before the present (kyr B.P.) has limited the application of radiocarbon dating of samples from the Last Glacial period. Here, we report (14)C results from Lake Suigetsu, Japan (35°35'N, 135°53'E), which provide a comprehensive record of terrestrial radiocarbon to the present limit of the (14)C method. The time scale we present in this work allows direct comparison of Lake Suigetsu paleoclimatic data with other terrestrial climatic records and gives information on the connection between global atmospheric and regional marine radiocarbon levels.
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| http://dx.doi.org/10.1126/science.1226660 | DOI Listing |
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