Stratigraphic Analyses of the Lower Devonian Sequences, Reggane Basin, Southestern Algeria

B30 STRATIGRAPHIC ANALYSES OF THE LOWER DEVONIAN SEQUENCES REGGANE BASIN SOUTHESTERN ALGERIA 1 The present study provides an integrated stratigraphy of the Lower Devonian of the southeastern Reggane Basin Bled El Mass. It is important to establish a standard section allowing an interregional correlation as well as an interpretation of single environmental conditions their changes through time and their geographical extent. Numerous sections have been investigated in this area in addition to data from other profiles in the basin. Investigation of the sedimentary sequences is based on an analysis of events. Initially many events are diachronous whereas others are difficult