Minerals (Basel) Minerals (Basel) Controls on Mg/Ca Ratios in Recent Stromatolites: Insights from Fluvial Systems in the Iberian Range (Spain) Auqué Luis F. Universidad de Zaragoza Osácar M. Cinta Universidad de Zaragoza Arenas Concha Universidad de Zaragoza Cukrov Neven Lojen Sonja Sancho Carlos 2023 research-article