“…Van Wagoner et al, 1990;Posamentier and Allen, 1999 control the sequence stratigraphic framework also exert impact on near-surface diagenetic alterations. These parameters include: (1) changes in pore water chemistry between meteoric, mixed marine-meteoric, and marine, which occur in response to transgression and regression events (Meisler et al, 1984;Hart et al, 1992;McKay et al, 1995;Morad et al, 2000;El-ghali et al, 2006), (2) rates of deposition, and hence the residence time of the sediments under certain geochemical conditions (Taylor et al, 1995;Ketzer et al, 2003;El-ghali et al, 2006), and (3) variations in the detrital composition, particularly intra-basinal clasts versus extrabasinal clasts owing to fluvial incision and marine erosion (Amorosi, 1995;Zuffa et al, 1995). Variations in these parameters are marked mostly at sequence stratigraphic surfaces (i.e.…”