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Chapter 7 Sequences, Minor Cycles, and Event Stratigraphy
reasons we observe such a great variety of sedimentary
sequences in the geologie record. The so-called seaslug model (cf. Figs. 7.3g and 7.17), proposed as a
conceptual framework of passive margins, cannot be
applied to other basin types without significant modifications (Weimer and Posamentier 1993).
(9) Finally, cyclic bedding and thicker sedimentary
cycles of various thicknesses and time periods are also
generated solely by clirnate change and/or tectonic motions, such as pulses of overthrusting in foreland basins (e.g. Massari et al. 1993; Millan et al. 1994; Gupta
1997; Marzo et al. 1998). If local tectonics are involved, the cyclic phenomena cannot be correlated
with those of other basins.
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