Alberta M.T. Whalen, G.P. Eberli, F.S.P. Van Buchem, E.W. Mountjoy, P. Homewood Variations in platform margin geometries and facies stacking patterns within the isolated Miette and Ancient Wall buildups and surrounding basinal sediments reveal the effects of carbonate sediment production and clastic sediment supply within a hierarchy of relative sea-level change. Six third order depositional sequences were deposited during a second order transgressive-regressive cycle. Parasequences are subtidally dominated and capped initially by relatively thin but laterally extensive bulbous stromatoporoid framestones and later by thick tabular to massive stromatoporoid framestones.
Subaerial exposure is recorded only at the top of such sequences.
They are initially capped by relatively thick but laterally restricted tabular-massive stromatoporoid framestones but become more peritidal dominated upwards and record repeated periods of subaerial exposure. Sequence geometries vary systematically within the second order transgressive-regressive cycle. Progradational geometries occur during early second order transgression and late regression. Aggradational geometries are found during late second order transgression and early regression. The second order transgressive phase effectively sequestered siliciclastic sediments to the eastern portion of the basin.