The Anthropology Department and Anthropology Student Association at Portland State University presents the January 2010 <b>Archaeology First Thursday Lecture</b>:<div><br></div><div>Come hear about <b>"Obsidian Studies at the Beech Creek Site"</b> from Cheryl Mack, archaeologist for the Gifford Pinchot National Forest.</div>
<div><font class="Apple-style-span" face="arial, sans-serif"><br></font></div><div><font class="Apple-style-span" color="#888888" face="sans-serif, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;"><font class="Apple-style-span" color="#000000" face="arial"><span class="Apple-style-span" style="border-collapse: separate;">Everyone who attends the lecture will also receive a raffle ticket for a chance to win a copy of a recent archaeological publication.<br>
</span></font></span></font><div><br>Please join us <b>Thursday, January 7th</b> at <b>4 p.m.</b> in <b>Room 294</b> of PSU's<br><b>Smith Memorial Student Union </b>(1825 SW Broadway, 97201)<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><font class="Apple-style-span" face="sans-serif, sans-serif"><span class="Apple-style-span" style="font-size: small;"><br>
</span></font><br><font size="2" face="sans-serif">The Beech Creek Site (45LE415) in the upper Cowlitz River valley was occupied throughout the greater part of the Holocene, and offers a unique opportunity to observe changes in site use over time. A relatively large sample of obsidian (111 specimens) from the site was submitted for X-ray fluorescence analysis and hydration analysis. Hydration rim values were useful in assessing depositional integrity and in establishing a relative chronology of occupation. Combined, the results of X-ray fluorescence and hydration analysis offer insights into both the social network of the site's inhabitants, and how that network changed through time. Although most of the obsidian recovered at the site originated from the nearby Elk Pass source in the Washington Cascades, a number of sources in central and eastern Oregon were represented in the site's assemblage. Based on hydration rim values, it appears that sources in eastern Oregon were being used at the earliest period of the site's occupancey, followd later by sources in central Oregon and Washington. </font> <br>
<font color="#888888"><br></font></span></div><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; "><font color="#888888"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: arial; font-size: small; ">For more information please call 503.725.3081or email <a href="mailto:wendyannwright@gmail.com" target="_blank">wendyannwright@gmail.com</a><br>
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