Hamilton and Tadros (1994) provided a succinct summary of the stratigraphic significance of thick, regionally extensive coal seams in relation to base-level changes. Many examples illustrate that although peat deposition/coal formation is not restricted to transgressive periods and can occur at any point on a relative sea level curve (McCabe, 1993), the thickest and most extensive coals commonly occur at or near the transgressive maximum (e.g., Sears et al., 1941; Fassett and Hinds, 1971; Ryer, 1981, 1984; Tadros and Hamilton, 1991; Gastaldo et al., 1993; Aitken and Flint, 1994, 1995;...

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