A Deep Alteration and Oxidation Profile in a Shallow Clay Aquitard: Example of the Tégulines Clay, East Paris Basin, France

Figure 10

Burial curve proposed for the Tégulines Clay and diagenetic mineral sequence. The mineral sequence including processes of dissolution, oxidation, and precipitation is detailed in function of depth for the telodiagenesis. Ank, ankerite; Cc bioclast, calcite from detrital bioclasts; Clay, undifferentiated detrital clay matrix including kaolinite, illite-smectite mixed layer minerals, chlorite, illite/mica; Cls, celestite; Dol, dolomite; FeOx, iron oxide-hydroxides; fr, francolite; Gl, glauconite; Gp, gypsum; Kfs, potassic feldspar; Py, pyrite; Qtz, quartz; Sid, siderite; Sm, smectite.