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Shale content of the different lithologies used on the ArcTem section (see Fig. 3). We assume that the shale fraction is mainly composed of phyllosilicates.

Lithology Shale content
Benin sandstone 0
Shaly MFS 0.98
Shaly Slope 0.98
Sandy shelf 0.5
Shaly shelf 0.5
Sandy transitional 0.09
Sandy slope 0.01
Mobile shale 0.7
Cretaceouscarb 0.01
Cretaceous carbshale 0.7
Paleocene 0.98

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