Investigating 10Be/14C chronometer age divergence in Southern New England to assess the timing of Laurentide Ice Sheet deglaciation
Accurately understanding the timing of past deglaciations is important for studying ice sheet response to climate change. Different methods to reconstruct the Laurentide deglaciation disagree due to different methodological assumption. 10Be exposure ages from the terminal moraine of the ice imply re...
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| Format: | Text |
| Language: | unknown |
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UVM ScholarWorks
2024
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| Online Access: | https://scholarworks.uvm.edu/src/2022/completepresentationlist/46 |
| Summary: | Accurately understanding the timing of past deglaciations is important for studying ice sheet response to climate change. Different methods to reconstruct the Laurentide deglaciation disagree due to different methodological assumption. 10Be exposure ages from the terminal moraine of the ice imply retreat occurred between 28 and 25 ka, while organic 14C ages suggest retreat occurred around 16 ka. The ages converge 200 kilometers north, however no 10Be samples have been measured between southern Connecticut and northern Massachusetts. We collected 14 samples from this region to fill the data gap and attempt to geographically constrain where the two reconstruction methods converge. |
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