image: Isotope geochemist Ken Collerson and archaeologist Marshall Weisler (holding a hafted adze) beside the thermal ionization mass spectrometer that was used to analyse the basalt adzes in their study. This image relates to an article that appeared in the Sept. 28, 2007, issue of the journal Science, published by AAAS. The study, by Dr. Kenneth D. Collerson and Dr. Marshall I. Weisler at University of Queensland in St. Lucia, Australia, was titled "Stone Adze Compositions and the Extent of Ancient Polynesian Voyaging and Trade." view more
Credit: Image courtesy of Jeremy Patten, The University of Queensland.