Figure 12: Provenance and tectonic discrimination plots for Es3 shales in the Nanpu and Dongpu depressions.
(a) Provenance discrimination diagram proposed by Roser and Korsch [96]. P1 indicates mafic provenance from ocean island arc. P2 implies intermediate provenance from mature island arc. P3 supports felsic provenance from active continental margin. P4 indicates recycled provenance and grantitic-gneissic or sedimentary source. (b) is the Al2O3/SiO2 vs. Fe2O3 and MgO diagram. a shows the occanic island arc, and b is the continental island arc. c is the active continental margin, and d implies the passive margin. (c) show the tectonic evaluation discriminations [99,100]. (d) shows the geochemical classification [101]
(a) Provenance discrimination diagram proposed by Roser and Korsch [96]. P1 indicates mafic provenance from ocean island arc. P2 implies intermediate provenance from mature island arc. P3 supports felsic provenance from active continental margin. P4 indicates recycled provenance and grantitic-gneissic or sedimentary source. (b) is the Al2O3/SiO2 vs. Fe2O3 and MgO diagram. a shows the occanic island arc, and b is the continental island arc. c is the active continental margin, and d implies the passive margin. (c) show the tectonic evaluation discriminations [99,100]. (d) shows the geochemical classification [101]
