Fig. 8
From: Diagenesis and very low grade metamorphism in a 7,012 m-deep well Hongcan 1, eastern Tibetan plateau
Comprehensive variations of all evolutionary parameters from diagenesis to very low grade metamorphism with depth of well Hongcan 1. D diagenetic zone, D-A transition between diagenetic zone and anchizone, LA low anchizone, HA high anchizone, A-E transition between anchizone and epizone, T 3 zhw Zhuwu formation of upper Triassic, T 3 zgn Zagunao formation of upper Triassic, T 2 zgsh Zagashan formation of middle Triassic, Qtz quartz, Fs feldspar, Ill illite, Ms muscovite, Chl chlorite, I/S illite/smectite mixed-layer phase, C/S chlorite/smectite mixed-layer phase, Kln kaolinite, Cal calcite, Sd siderite, Dol dolomite, Ank ankerite, Stp stilpnomelane, Gr graphite, IC “illite crystallinity”, CC “chlorite crystallinity”, P = 2M025/(2M025 + 1M112), HHC higher hydrocarbons, CH 4 methane, H 2 O water, T formation temperature. Numbers with a minus sign by the left of column indicate the depth down from the ground surface. Legend 1 shale, 2 fine sandstone, 3 meta-sandstone, 4 slate, 5 phyllite, 6 marble, 7 detachment, 8 folding trace. Plus sign indicates homogenization temperature of fluid inclusion in quartz; triangle indicates temperature evaluated by Cc–Do geobarothermometer; open circle indicates temperature evaluated by chlorite chemical geothermometer (Inoue et al. 2009)