Second-order sequence stratigraphy of the palaeozoic of north africa

摘要

A synthesis of the sedimentology and sequence stratigraphy of the Palaeozoic succession of North Africa is presented. Two chronostratigraphic correlation panels have been constructed at roughly right angles to each other across North Africa, in WNW-ESE and NNW-SSE orientations. The panels illustrate the way in which sedimentology and hydrocarbon geology vary across the continent through time. The Palaeozoic succession is divided into five second-order sequences (AN 1, Early Cambrian to Late Ordovician; AN 2, Late Ordovician to Late Silurian; AN 3, Devonian; AN 4, Carboniferous; AN 5, Permian), With sequence boundaries, maximum flooding surfaces and systems tracts being defined for NA 1 to NA 4.