A tightly-constrained date for the Millennium Eruption improves the prospect for further investigations of historical sources that may shed light on the eruption's impacts, and enhances the value of the B-Tm ash as a chronostratigraphic marker.Whether you have inherited an old sewing machine or picked one up at the local thrift shop, you may be curious about its value.Antique Singer sewing machine values are determined by many different factors, including the condition of the machine and the desirability of the model.Determining what your Singer is worth gives you the knowledge you need to insure, sell, or just enjoy your machine.Here, we identify the cosmogenic radiocarbon signal of 775 CE in a subfossil larch engulfed and killed by pyroclastic currents emplaced during the initial rhyolitic phase of the explosive eruption.Combined with glaciochemical evidence from Greenland, this enables us to date the eruption to late 946 CE.
However, these sources can help you estimate the value to satisfy your own curiosity or set a reasonable sales price for your machine.
This makes the machine's location an important factor in its value.
Certain machines are just more popular among collectors in certain areas.
Ranking among the largest volcanic eruptions of the Common Era (CE), the ‘Millennium Eruption’ of Changbaishan produced a widely-dispersed tephra layer (known as the B-Tm ash), which represents an important tie point for palaeoenvironmental studies in East Asia.
Hitherto, there has been no consensus on its age, with estimates spanning at least the tenth century CE.