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Explanations: MMP: mineral matter present; Kao.-Kaolinite; HM-Hydroxyl Mineral; OM-Organic matter; Carb.-Carbonate; Qtz.-Quartz; P-Present

Table 4 Explanations: MMP: mineral matter present; Kao.-Kaolinite; HM-Hydroxyl Mineral; OM-Organic matter; Carb.-Carbonate; Qtz.-Quartz; P-Present

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Table 1: The litho-stratigraphic sequence of the Ib-river Mand-Raigarh basin, India (modified after Casshyap et al., 1988; Chakraborti et al., 2002; Mendhe et al., 2018b).
Table 1: The litho-stratigraphic sequence of the Ib-river Mand-Raigarh basin, India (modified after Casshyap et al., 1988; Chakraborti et al., 2002; Mendhe et al., 2018b).
Explanations: C:carbon; O:oxygen; Mg: magnesium; AL: aluminium; Si:silicon; S:sulphur; K:potassium; Ti: titanium; Fe: Iron; Zr: Zircon; Ca: calcium
Explanations: C:carbon; O:oxygen; Mg: magnesium; AL: aluminium; Si:silicon; S:sulphur; K:potassium; Ti: titanium; Fe: Iron; Zr: Zircon; Ca: calcium
Fig. 2: Megascopic photographs of core shale samples from the Ib-River Mand-Raigarh basin. Fig.3: Flowchart of the analytical procedures.
Fig. 2: Megascopic photographs of core shale samples from the Ib-River Mand-Raigarh basin. Fig.3: Flowchart of the analytical procedures.
ig. 4: Maturity trend of shale core samples with depth, a) VRo% with depth, b) hydrogen with depth, ) nitrogen with depth and d) N/O with depth.
ig. 4: Maturity trend of shale core samples with depth, a) VRo% with depth, b) hydrogen with depth, ) nitrogen with depth and d) N/O with depth.
Fig. 5: Relationship of vitrinite reflectance with a) hydrogen and b) nitrogen content
Fig. 5: Relationship of vitrinite reflectance with a) hydrogen and b) nitrogen content
Fig. 6: Plot of TOC with different chemical properties, a) carbon, b) ash, c) hydrogen and d. sulphur content.
Fig. 6: Plot of TOC with different chemical properties, a) carbon, b) ash, c) hydrogen and d. sulphur content.
Fig. 7: Relationship of ash with different chemical properties, a) carbon, b) sulphur, c) oxyge1 and d) O/C ratio.
Fig. 7: Relationship of ash with different chemical properties, a) carbon, b) sulphur, c) oxyge1 and d) O/C ratio.
Fig. 13: Relationship of average pore diameter with a) total pore volume and b) BJH surface area.
Fig. 13: Relationship of average pore diameter with a) total pore volume and b) BJH surface area.
Fig. 14a-h: FHH plots showing two distinct fractal characteristics (D; and D2).
Fig. 14a-h: FHH plots showing two distinct fractal characteristics (D; and D2).
Fig. 15: Plot of fractal dimensions with organic and inorganic content, a) TOC vs fractal dimensions D, and D2, b) fractal dimension D> vs ash content.
Fig. 15: Plot of fractal dimensions with organic and inorganic content, a) TOC vs fractal dimensions D, and D2, b) fractal dimension D> vs ash content.
Fig. 16: Plot of fractal dimensions with estimated surface area of different methods, a) D; with Langmuir surface area b) D2 with Langmuir surface area c) D; with multipoint surface area d) D2 with multipoint surface area e) D2 with DFT surface area f) D2 with DR surface area.
Fig. 16: Plot of fractal dimensions with estimated surface area of different methods, a) D; with Langmuir surface area b) D2 with Langmuir surface area c) D; with multipoint surface area d) D2 with multipoint surface area e) D2 with DFT surface area f) D2 with DR surface area.
Fig.17: Plot of fractal dimension D» with a) total pore volume and b) average pore diameter.
Fig.17: Plot of fractal dimension D» with a) total pore volume and b) average pore diameter.
Fig.18: SEM images of studied shale samples showing different pore type, a) interlayer or fissile, b) irregular macro-cracks, c) inter-granular, d) pore-pipe, e) partially altered mineral associated pores, f) decomposed organic pores, g) large altered macro-pores and h) carbonate filled fractures and pores.
Fig.18: SEM images of studied shale samples showing different pore type, a) interlayer or fissile, b) irregular macro-cracks, c) inter-granular, d) pore-pipe, e) partially altered mineral associated pores, f) decomposed organic pores, g) large altered macro-pores and h) carbonate filled fractures and pores.
Fig. 19: Ternary facies plot showing organo-inorganic transformations, a) C - O - Si, b) Al - Si - K, c) Al — Si - C and d) Si/Al - Mg+Al+Si/K+Fe+Ca - Si+K+Fe/Ca+Me+S.
Fig. 19: Ternary facies plot showing organo-inorganic transformations, a) C - O - Si, b) Al - Si - K, c) Al — Si - C and d) Si/Al - Mg+Al+Si/K+Fe+Ca - Si+K+Fe/Ca+Me+S.
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GeologyGeochemistryGeophysicsMineralogyFractal Dimension
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