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Figure 4 | Geochemical Transactions

Figure 4

From: Metathesis in the generation of low-temperature gas in marine shales

Figure 4

The exponential fall in n-pentane yield relative to methane yield, Mowry shale, 11 hours at 100°C. Concentrations (μmol/g shale hr) are yields over time (Table 1). The red curve is the regression line for y = (2 × 10-5)* e2212*x, where y = n-C5 concentrations and x = C1 concentrations; R2 = 0.93. Ethane through n-pentane show the same exponential relationship to methane with decreasing exponents α: n-C5, α = 2212; n-C4, α = 1924, R2 = 0.91; C3, α = 1139, R2 = 0.93; C2, α = 416, R2 = 0.93.

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