Plate P9. Coal and shaly coal. 1. T5818; Hole 1109D; 969.89 mbsf. Shaly coal. Possible in situ roots are present in some horizons, but in Hole 1109D some of the deeper samples represent hypautochthonous peats. It is possible that these samples represent intraclasts, but an indigenous origin is more probable. This field shows a shaly coal with detrovitrinite, resinite, sporinite, and liptodetrinite. Liptinite-rich horizons such as this are typical of peat swamps but not of fringing marine settings in the Tertiary (reflected light; field width = 0.22 mm; detrovitrinite reflection = 0.30%).