470
(A)
i!
;::
(B)
I• I
lbl
1•1
lbl
� Br.Uded
tw,:;,l 1\bnderin g
� &uarine/fidal�influence
l<': · ,;j Mouth Bar/Bay Delta
f· : : : · :· : : : · :J Lwr, Mouth Bar/Bay Delta I Highstand deposits
Ravi.nement surface &
'Transgressive' deposits
Sequtnee Boundary
Sequence Stratigraphy
Distance
� Bntided
Distance
fZ2J Estuarine/TidaJ influence
D Mouth Bar/Bay Delta
[ · :· : · : - : q Lwr. Mouth Bar/Bay Delta I Highstand Deposits
Ravinement surface &
'Transgressive' deposits
Fig. 13.17A,B. Longitudinal stratigi:-aphic cross section
(a) and chronostratigraphic diagram (b)(Wheeler chart)
of fluvial-coastal sequences developed during conditions
of A rapid rise of base level and B slow rise of base level.
Based on studies of Upper Cretaceous sequences in south·
ern Utah. (Shanley et a!. 1992)