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New dinoflagellate zones and a depositional model for the Great Australian Basin
| Morgan, R. | |
| 1977b | |
| Geological Survey of New South Wales, Quarterly Notes, 1st July 1977, p. 10-18 | |
| New dinoflagellate zones and a depositional model for the Great Australian Basin |
Morgan, R., 1977; New dinoflagellate zones and a depositional model for the Great Australian Basin. Geological Survey of New South Wales, Quarterly Notes, 1st July 1977, p. 10-18. Abstract Three new dinoflagellate zones, the Aptian Odontochitina opercuIata Zone, the partly Aptian to middle Albian Pseudoceratiium turneri Zone, and the middle Albian to Cenomanian Endoceratium ludbrookiae Zone, each with three informal subzones, are proposed. These are correlated with the established spore-pollen biostratigraphy of eastern Australia. Using both zonal schemes, the major lithostratigraphic units for the Great Australian Basin are correlated, and their distribution in time and space explained by four transgressive-regressive cycles over a large, stable intracratonic area. These sea-level events may have been caused by the coeval development of the Indian and South Atlantic Ocean basins, and so be of worldwide, not local, significance.