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Facies and Sedimentary Environment of the Late Cretaceous Units at Abegarm(Avaj) Area

Ghodratollah Mohammadi1 , Massomeh Shirzad2 and Ali Reza Ashofteh3 *

1 Mining Engineerng Department, Islamic Azad University South Tehran Branch, Tehran, Iran

2 Faculty Member of Geology Department, Islamic Azad University Science and Research Branch Tehran, Tehran, Iran

3 Department of Mining Engineering Faculty of Technical & Engineering, Islamic Azad University South Tehran Branch, Tehran, Iran

DOI: http://dx.doi.org/10.12944/CWE.10.Special-Issue1.93

An investigation was made on the facies and sedimentary environment of upper cretaceous rocks at north west of Abegarm(Avaj) area. This study has also covered carving lime sediments mainly being micritic and sparits with fossil(bioclast) markings, such as: Echinoderm, alga, lamelibransch, brachiopodo and berizoa. Field and microscopic studies led to recognition and separation of 10 carbonate and carving facies as follow: Group of open marine facies that include 1- Bioclastic mudstone, 2- Bioclastic wackstone, 3- Bioclastic packstone, Group of barrier facies that include 4- Bioclastic grainstone, 5- Grainstone packstone, Group of lagoon facies that include 6- Bioclastic packstone, 7- Peloid wackstone Group of continental facies that include, 8- Litharenite, 9- Sublitharenite and 10- Gerywacki. By interpretation and analysis of these microfacies and their related environment we shall be able to recognize the old geographical(palaeobiogeographic) condition in this region which has proven to have been a ramp type carbonate platform with a nearly uniform slope(homodinal ramp).


Sedimentology; Abegram(Avaj); Lithology; Facies; Sedimentary environment

Copy the following to cite this article:

Mohammadi G, Shirzad M, Ali Reza Ashofteh A. R. Facies and Sedimentary Environment of the Late Cretaceous Units at Abegarm(Avaj) Area. Special Issue of Curr World Environ 2015;10(Special Issue May 2015). DOI:http://dx.doi.org/10.12944/CWE.10.Special-Issue1.93

Copy the following to cite this URL:

Mohammadi G, Shirzad M, Ali Reza Ashofteh A. R. Facies and Sedimentary Environment of the Late Cretaceous Units at Abegarm(Avaj) Area. Special Issue of Curr World Environ 2015;10(Special Issue May 2015). Available from: http://www.cwejournal.org/?p=9836

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