% pubman genre = article @article{item_2408917, title = {{Laser ablation depth profiling of U-series and Sr isotopes in human fossils}}, author = {Benson, Alexa and Kinsley, Les and Willmes, Malte and Defleur, Alban and Kokkonen, Harri and Mussi, Margherita and Gr{\"u}n, Rainer}, language = {eng}, isbn = {0305-4403}, doi = {10.1016/j.jas.2013.02.028}, year = {2013}, date = {2013}, abstract = {{We have explored laser depth profiling to obtain data sets for U-series as well as Sr analyses. Laser probing with an 81 $\mu$m spot size allows for the exploration of low uranium domains of up to 400 $\mu$m below the outer surface in tooth enamel. These low U domains will contain Sr isotope compositions of the individual, that are least affected by diagenetic Sr overprints. The small holes drilled for U surveying are not visible to the naked eye. Using larger spot sizes of around 233 $\mu$m, laser drilling can be used to obtain reliable U-series isotope data to a depth of approximately 1000 $\mu$m in enamel and around 1300 $\mu$m in bone. Furthermore, meaningful 87Sr/86Sr isotope data can also be obtained with this spot size. Using our sampling strategy, the overall damage to a human tooth is minute, as demonstrated on a Neanderthal tooth from Moula-Guercy. We expect that laser ablation depth profiling will become routine for gaining insights into the age of human fossils and the migrations of ancient humans.}}, journal = {{Journal of Archaeological Science}}, volume = {40}, number = {7}, pages = {2991--3000}, }