Mixed carbonate - siliciclastic sequences / Смешанные карбонатно-кремнекластические образования

The study of carbon ate- si lie tclastic mixed sequences has seen an increase in the number of investigations that focus on mixed settings as pan of the continuum between the carbonate and clastic end members. The level of interest in such mixed sequences has been reflected in recent years by sessions at national meetings that dealt specifically with the topic, and also by recent publications (Doyle and Roberts, 1988; Budd and Hams, 1990). Cyclic deposition in mixed basins by reciprocal sedimentation has become one of the foundation blocks for sequence stratigraphy (Van Siclen, 1958; Wilson, 1967; Meissner, 1972; Sarg, 1988). in addition, these mixed sequences have a variety of distinctive petroleum reservoir characteristics, important for both exploration and development programs. The emphasis now is on reevaluating ancient sequences in the light of a more dynamic understanding of spatial and temporal variations and controls on these sequences. <...>