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A preliminary report of Early Cretaceous dinocyst floras from Site 765, Argo Abyssal Plane, northwest Autralia
| Helby, R. and McMinn, A. | |
| 1992 | |
| ODP Proceedings, Scientific Results, Vol. 123: 407-420 | |
| A preliminary report of Early Cretaceous dinocyst floras from Site 765, Argo Abyssal Plane, northwest Autralia |
Helby, R. and McMinn, A., 1992; A preliminary report of Early Cretaceous dinocyst floras from Site 765, Argo Abyssal Plane, northwest Autralia. ODP Proceedings, Scientific Results, Vol. 123: 407-420 Abstract: Results of a preliminary study of Early Cretaceous dinocyst assemblages from Site 765 on the Argo Abyssal Plain, off northwestem Australia, are presented. The palynological sequence is interpreted in terms of Australian zones and is, in descending order, the late Aptian Diconodinium davidii Zone (Cores 123-765C-33R to -39R), the middle to early Aptian Odontochitina operculata Zone (Cores 123-765C-40R to -49R), the Barremian Muderongia australis Zone (Cores 123-765C-SOR to -54R), and the Bemasian lower Batioladinium reticulatum Zone (Core 1 23-765C-59R). The dating of the sequence as late Aptian to Berriasian on the basis of dinocysts is supported, in part, by data concerning associated foraminiferal, radiolarian, and calcareous nannofossil suites.