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Jeju Island is a live volcano
Date:7/22/2014

onger half-life period shows limitations in determining the time the basalt was formed about 10,000 years ago.

In order to overcome the limitations of the dating method for the rocks covering the upper sedimentary layer, the research team led by Dr. Jin-Young Lee concurrently used radiocarbon dating and optically stimulated luminescence dating (OSL), using such cross-validation of which raised the accuracy of tracing the past volcanic activities.

Judging from the findings, Jeju Island is not an extinct volcano, but seems to rather be a potentially live volcano because a volcano that has erupted within 10,000 years is defined to be a live volcano on a geological basis.

Not remaining complacent for the findings, the research team plans to continuously conduct the studies on the time the volcanic rocks were formed in several regions on the island in order to identify the latest volcanic activity.


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Contact: Jongwon Lee
jmone@kigam.re.kr
82-106-801-4710
Korea Institute of Geoscience and Mineral Resources (KIGAM)
Source:Eurekalert  

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