Received: OctoAccepted: FebruPublished: February 24, 2020Ĭopyright: © 2020 Pacheco-Forés et al.
Halcrow, University of Otago, NEW ZEALAND This study contributes to paleomobility studies within central Mexico by expanding knowledge of strontium isotope variability within the region, ultimately allowing researchers to detect intra-regional residential mobility and gain a greater understanding of the sociopolitical interactions between the Basin of Mexico and supporting outlying regions of central Mexico.Ĭitation: Pacheco-Forés SI, Gordon GW, Knudson KJ (2020) Expanding radiogenic strontium isotope baseline data for central Mexican paleomobility studies. Although the two clusters falling within the Basin of Mexico overlap in their local 87Sr/ 86Sr ranges, many locations within the Basin are distinguishable using 87Sr/ 86Sr values at the site-level. A five-cluster k-means model was then generated to determine which regions of the Basin of Mexico and greater central Mexico can and cannot be distinguished isotopically using 87Sr/ 86Sr values. These data were analyzed alongside 16 published 87Sr/ 86Sr values from two additional sites within the region of interest. A total of 63 plant and water samples were collected from 13 central Mexican sites and analyzed for 87Sr/ 86Sr on a Thermo-Finnigan Neptune multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS). This study therefore serves to expand the utility of strontium isotopes across a wider geographic region. This study adds to this important dataset by presenting bioavailable 87Sr/ 86Sr values across central Mexico focusing on the Basin of Mexico. While considerable effort has been expended developing 87Sr/ 86Sr baseline values across the Maya region, work in central Mexico is primarily focused on the Classic period urban center of Teotihuacan. Radiogenic strontium isotopes ( 87Sr/ 86Sr) have long been used in analyses of paleomobility within Mesoamerica.