1. (a)–(c) Panels showing stratigraphic architecture in the Blackhawk Formation, as traced along well-exposed, near-linear cliff faces along the eastern edge of the Wasatch Plateau (Figs 1 & 2), and (d)–(f) maps showing the location of photographic logs (e.g. fig. 3), measured sections and cliff-face exposures used to construct the panels.
(a)–(c) Panels showing stratigraphic architecture in the Blackhawk Formation, as traced along well-exposed, near-linear cliff faces along the eastern edge of the Wasatch Plateau (Figs 1 & 2), and (d)–(f) maps showing the location of photographic logs (e.g. fig. 3), measured sections and cliff-face exposures used to construct the panels. Panels are assigned letters using the scheme of Hampson et al. (2012): (a) & (d) panel A; (b) & (e) panel C; and (c) & (f) panel F. Each panel uses a different local datum, at the top of a shallow-marine parasequence in the underlying, diachronous Star Point Sandstone. The projected positions of the Bear Canyon, Kenilworth–Castlegate D and Rock Canyon coal zones are used to subdivide the Blackhawk Formation into four stratigraphic intervals (cf. Hampson et al. 2012). Sandbody dimensions have been extracted from five rectangular ‘windows’ of the three panels (Fig. 6) to be used in combination with photographic-log and measured-section pseudo-wells as conditioning data for object-based models. Each ‘window’ provides data from a single stratigraphic interval. ‘Windows’ are highlighted with red boundaries and labelled A1, C1, C2, C3 and F4 (Fig. 4a–c) using the scheme of Flood & Hampson (2015). Model areas correspond to the red borders of the maps (Fig. 4d–f). Facies associations in the panels are coloured according to the key in Figure 3.
Carlos A. Villamizar et al. Petroleum Geoscience 2015;21:
© 2015 The Author(s)‏