Plate 2 Illustrations of the components of a third-order sequence cycle.
Read captions and admire figures in
stratigraphic sequence from bottom to
top of page. For full explanation see
Section 6.4.3. (From Neal et al., 1993,
courtesy of Schlumberger Oilfield
Review.)
(E) Slowly rising sea level permits the
slow basinward progradation of thin
high-stand systems tract (orange).
Then the sea level begins to drop ....
(D) Rapid flooding of the shelf permits
deposition of transgressive systems
tract of shallow marine shelf and coastal
sands (green). The top of this tract is
marked by a maximum flooding surface, indentified by a condensed
sequence.
(C) Sea floods shelf providing accommodation space for prograding deltas
(pink).
(B) Rising sea level floods the continental slope, permitting the deposition of
slope fans (brown).
(A) Sea level at its lowest point. At the
foot of the emergent continental slope a
low-stand basin floor submarine fan
systems tract is deposited (yellow).