Fig. S5: Biotite Mg/Mg+Fe+Mn vs K+Na+Ca diagram of P2 ash layers. Chemical and petrographic fingerprinting of volcanic ashes as a tool for high-resolution stratigraphy of the upper Miocene Pisco Formation (Peru) Giulia Bosio Anna Gioncada Elisa Malinverno Claudio Di Celma Igor M. Villa Giuseppe Cataldi Karen Gariboldi Alberto Collareta Mario Urbina Giovanni Bianucci 10.6084/m9.figshare.6977861.v1 https://geolsoc.figshare.com/articles/journal_contribution/Fig_S5_Biotite_Mg_Mg_Fe_Mn_vs_K_Na_Ca_diagram_of_P2_ash_layers_Chemical_and_petrographic_fingerprinting_of_volcanic_ashes_as_a_tool_for_high-resolution_stratigraphy_of_the_upper_Miocene_Pisco_Formation_Peru_/6977861 Fig. S5: Biotite Mg/Mg+Fe+Mn vs K+Na+Ca diagram of P2 ash layers. 2018-08-17 03:18:26 vs Fig Miocene Pisco Formation petrographic fingerprinting Mg P 2 ash layers diagram Biotite Geology