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tephrochronology
(redirected from tephrochronological)

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tephrochronology [¦tef·rō·krə′näl·ə·jē]
(geology)
The dating of different layers of volcanic ash for the establishment of a sequence of geologic and archeologic occurrences.


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The eruption in 1259, however, provides one of the few isochrones which is potentially of global significance, and there is an urgent need to track it down to source and to refine tephrochronological techniques to the level of locating it, and many other eruptions, in sediments other than ice.
They are single dates on marine shell or unidentified charcoal or wood, and there is no alternative indication of age such as a tephrochronological context (e.
 
 
 
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