Categories
Geochemistry

Strontium isotope baseline mapping

The IRHUM (Isotopic Reconstruction of Human Migration) database is a web platform to access, explore and map isotope data to investigate migration. It is maintained at the Research School of Earth Sciences, ANU. Citation: M. Willmes, L. McMorrow, L. Kinsley, R. Armstrong, M. Aubert, S. Eggins, C. Falguères, B. Maureille, I. Moffat, R. Grün (2014), The IRHUM…

Categories
Geochemistry

Advances in laser ablation analysis of fish hardparts

Strontium isotope ratios (87Sr/86Sr) in otoliths are a well-established tool to determine origins and movement patterns of fish. However, otolith extraction requires sacrificing fish, and when working with protected or endangered species the use non-lethal samples such as scales, spines, and fin rays, is preferred. Unlike otoliths that are predominantly aragonite, these tissues are comprised…