1180 samples from wells 7120/9-2, 7120/12-2, 7121/1-1, 7122/7-3, 7124/3-1, 7128/6-1, 7224/7-1, 7228/7-1A, 7226/11-1, 7228/2-1S, 7228/9-1S, 7229/11-1, 7321/8-1 and 7324/10-1 are included in this study. These wells all penetrate thick and nearly complete Triassic successions. Six chemostratigraphic megasequences, (Megasequences BMS0 to BMS5), are defined and regionally correlated. The mega sequences are further divided into twelve chemostratigraphic sequences and a total of 20 chemostratigraphic packages, providing a means to define local, detailed stratigraphic correlations.