Organic parameters obtained from Röttingen core

The total carbon (TC), total organic carbon (TOC), and total sulfur (TS) were determined using a LECO CS-230 system (Laboratory Equipment Corporation). Samples were heated up to 2000 °C under an oxygen atmosphere and an infrared detector subsequently measured the amount of produced CO₂ and SO₂. TOC was measured the same way after removing inorganic carbonates using 10 % HCl solution at 80 °C. Rock-Eval Pyrolyses were performed on a Rock-Eval-6 analyser (Vinci Technologies) using up to 180 mg initial sample material and a standard program (Espitalié et al., 1977; Lafargue et al., 1998), starting isothermal with 300°C for 3 min, succeeded by a heating rate of 25°C/min up to 650°C. Standard deviations for hydrogen indices (HI) and Tmax values are ± 5 % and ± 2°C, respectively.

采用LECO CS-230系统（美国力可公司，Laboratory Equipment Corporation）测定总碳（total carbon, TC）、总有机碳（total organic carbon, TOC）与总硫（total sulfur, TS）的含量。将样品置于氧气气氛中加热至2000℃，随后通过红外检测器检测生成的CO₂与SO₂的量。总有机碳的测定需先在80℃下使用10%盐酸溶液去除无机碳酸盐，再采用上述相同方法完成测试。
采用Rock-Eval-6分析仪（Vinci Technologies）开展Rock-Eval热解实验，称取最多180 mg的初始样品，遵循标准程序（Espitalié等，1977；Lafargue等，1998）：先以300℃恒温3分钟，随后以25℃/min的升温速率加热至650℃。氢指数（hydrogen index, HI）与热解峰温（Tmax）的标准偏差分别为±5%与±2℃。