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Biostratigraphy and Lithofacies Pattern of the Gresten Formation (Dogger) in South Moravia (Czech Republic), with Emphasis on Reworked Triassic Material.
| Rehanek, J., Leereveld, H., Verreusel, R.M.C.H., and Salaj, J. | |
| 1996 | |
| Jb Geol. B. -A., Band 139, Heft 4 pp. 505-521.Jb Geol. B. -A., Band 139, Heft 4 pp. 505-521. | |
| Biostratigraphy and Lithofacies Pattern of the Gresten Formation (Dogger) in South Moravia (Czech Republic), with Emphasis on Reworked Triassic Material. |
Rehanek, J., Leereveld, H., Verreusel, R.M.C.H., and Salaj, J., 1996. Biostratigraphy and Lithofacies Pattern of the Gresten Formation (Dogger) in South Moravia (Czech Republic), with Emphasis on Reworked Triassic Material. Jb Geol. B.-A., Band 139, Heft 4 pp. 505-521. Abstract Cores from ten borehole sections through the Gresten Formation (Dogger, Autochthonous Mesozoic) in the southeastern part of the Bohemian Massif (Czech Republic) were sedimentologically and biostratigraphically investigated. The previous controversial stratigraphic assessments of corresponding intervals in Moravia necessitated a profound study of the microfacial and fossil content of the formation to determine its development and its stratigraphy. The general lithofacies development of the formation is characterized by a repetition of a coarse clastic unit (arenaceous dominated) preceding a fine clastic unit (lutaceous dominated). Extraclasts of biomicrites and sponge claystones feature the formation. Within the formation five principal microtextural types could be recognized. Micropaleontological analyses were carried out by means of S.E.M. and thin section methods. Based on palynological correlation a Late Bajocian age could be assessed for the palynologically productive intervals of the Gresten Formation. The integrated results of the present study document redeposition of Triassic material in the formation.