The facies architecture of
siliciclastic sedimentary systems is shaped by a range of controls. To assess
the source-to-sink dynamics and controls on Cretaceous strata of the Western
Interior Seaway, Hampson et al. examine the influence of sediment supply on
stratigraphic architecture. Applying a new methodology of mass-balance analysis
to a succession of linked alluvial-coastal-shelfal deposits, the paper
quantifies downsystem-fining, sediment-partitioning and sediment-budget
characteristics within the sediment routing systems of several sequences. As
this work illustrates a novel approach to quantifying the relations between
accommodation and sediment supply, parameters that are rarely constrained or
quantified in conventional sequence stratigraphic interpretations, it holds the
potential for new insights into stratigraphic forcing mechanisms.
Mass-balance constraints on stratigraphic interpretation of linked alluvial–coastal–shelfal deposits from source to sink: example from Cretaceous Western Interior Basin, Utah and Colorado, U.S.A. by Gary J. Hampson, Robert A. Duller, Andrew L.
Petter, Ruth A.J. Robinson, and Philip A. Allen
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