ANT100Y1 Lecture Notes - Lecture 8: Volcanic Glass, Stone Tool, Dendrochronology
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Calendar dating: e. g. dates on grave stones, monuments, written documents, many calendars exist: Ancient greeks from date of first olympics = 776 bce. Muhammad"s departure from mecca = 622 ce. Egypt, china in terms of successive dynastic: limitations, must be long, with no gaps. E. g. dynastic need to list all kings: must be linked to a known date, or else it is relative. Obsidian hydration: obsidian = volcanic glass common stone tool material, when fractured edge begins to absorb water (= hydration , hydration penetrates into the stone at a known rate can be measured, limitations: Each region has a different rate of hydration. In temperature areas trees are dormant during winter leads to well-defined growth rings which vary by year: longest sequence = southern germany 11,000 years long, sophisticated uses, e. g. sequences of construction at complex sites, limitations: Reuse of old wood provides inaccurate dates (date is of cutting of tree, not use)
