Tidal Flats and Subtidal Sand Bodies - Trace Fossils as Indicators of Sedimentary Environments - page 527

FIGURE 8 Integrated sedimentological and ichnological model for subtidal compound dunes.
FIGURE 9 Compound dune-field deposits. Early Cambrian St. Piran Formation, Gog Group,
southern Rocky Mountains, Canada. (A) Compound cross-stratified sandstone. (B) Planolites
beverleyensis ( Pl ) on a bedding surface at bottomset of A (white arrow). Note that the high-energy
foresets are non-bioturbated.
have subsequently been reinterpreted as representing compound dunes within a
strait or seaway ( Dalrymple and Choi, 2007; Dalrymple et al., 2003 ). In com-
pound dune-field deposits, the dip direction of internal discontinuities is
the same as that of the cross-stratified sets, and the resulting sandstone