Some oxygen isotope evidence for Africans in Britain, c. 1100 BC–AD 800---new post :) http://www.caitlingreen.org/2015/10/oxygen-isotope-evidence.html …pic.twitter.com/fUiIFCbj9r
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@caitlinrgreen In other words, how does science know that the isotopes found in bone were present when the person was alive?
@STORI3D_PAST Derives from dental enamel which is largely resistant to diagenetic change & recent meta-analyses support this, w/ ranges >
@STORI3D_PAST > from teeth showing good link to levels in environmental water :)
@caitlinrgreen Brilliant! Still amazes me how much migration there was, esp given that even today many never travel over 50 miles from home.
@STORI3D_PAST 2012 meta-analysis indicates c.4% of those tested so far from Britain have values poss indicative of long-distance movement..!
@STORI3D_PAST (that's only those results indicative of a southern/warmer origin; yet more suggest northern/eastern/colder origin than UK!)
@caitlinrgreen Stable isotope analysis is so cool. Have 1 Q: How to guard against diagenesis/changes in chemical makeup from long burial?
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.