Fig 1.
Map of Peru showing the Conchucos region, Department of Ancash (identified by black rectangle) as well as the locations of previous 87Sr/86Sr isotope studies throughout Peru.
Map was produced in ArcGIS 10.4, with all subsequent layout and design preformed in Photoshop CC 14.2.
Fig 2.
87Sr/86Sr isoscape of the Conchucos region in the north-central Peruvian highlands.
Environmental reference samples include grass (Stipa ichu) and snail shells (Bulimulidae). Mean 87Sr/86Sr values were calculated for each geological formation and are presented along with mean standard error. Individual sampling locations are identified by black dots. Map was produced in ArcGIS 10.4, with all subsequent layout and design preformed in Photoshop CC 14.2.
Table 1.
Results of 87Sr/86Sr environmental sampling from six geological formations within the Conchucos region of Peru; sorted by sampling location.