Study of planktonic morphotype of the Abderaz Formation at type section, Iran
Abstract Abderaz Formation at its type section with an age of Turonian-Early Campanian and a thickness of 300 m contains light grey shale and marl. The study of the planktonic foraminifera in isolated form led to differentiate three morphotype groups. The first group is characterized by trochospiral...
| Published in: | Nature Precedings |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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Springer Science and Business Media LLC
2009
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| Online Access: | http://dx.doi.org/10.1038/npre.2009.3189.1 http://www.nature.com/articles/npre.2009.3189.1.pdf http://www.nature.com/articles/npre.2009.3189.1 |
| Summary: | Abstract Abderaz Formation at its type section with an age of Turonian-Early Campanian and a thickness of 300 m contains light grey shale and marl. The study of the planktonic foraminifera in isolated form led to differentiate three morphotype groups. The first group is characterized by trochospiral tests usually indicate shallow waters, the second group contains forms with strong ornamentations and the primary keels representing mid waters and finally compact trochospiral tests with keels known as deep water indices are included in the third group. Studies on the morphotypes showed a regressive cycle for Abderaz Formation. |
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