Water-Level Fluctutions and Sequence Stratigraphy of the Ab-Talkh Formation at Type Section

Ghasemi-Nejad, E.; Rezaei, & Z.

doi:10.22071/gsj.2010.55341

Document Type : Original Research Paper

Authors

Department of Geology, Faculty of Science, Tehran University , Tehran, Iran

https://doi.org/10.22071/gsj.2010.55341

Abstract

The Ab-Talkh Formation (Campanian- Maastrichtian) is one of the lithostratigraphic units of the Kopeh-Dagh sedimentary basin. So far no high resolution sequence stratigraphy has been done on this formation. In this study, we use the fossil evidences to analyse the formation in the sequence stratigraphy framework. For this purpose, after field studies 39 samples were collected and processed for palynology and palynofacies studies. Accordingly three palynofacies(V:Distal shelf , Ш:Proximal shelf , Π:Marginal shelf) determined. Based on changes in percentages of the three majour constituents of organic matter, the palynofacies and correlation of all data, three second-order sequences were differentiated. Abundance of warm water dinocysts, presence of fungal spores and the ratio of Peridinioids / Gonyaulacoids indicate dominance of warm climate during depositional course of the Ab-Talkh Formation.

Keywords

20.1001.1.10237429.1389.20.77.13.1

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Scientific Quarterly Journal of Geosciences

Water-Level Fluctutions and Sequence Stratigraphy of the Ab-Talkh Formation at Type Section

References

References

Volume 20, Issue 77
January 2010
Pages 91-98

Water-Level Fluctutions and Sequence Stratigraphy of the Ab-Talkh Formation at Type Section

References

References

Volume 20, Issue 77January 2010Pages 91-98

Volume 20, Issue 77
January 2010
Pages 91-98