Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Diatomes and Diatomites Study in Azarbayjan Region (Tabriz ,Maragheh and Mameghan)

Document Type : Original Research Paper

Authors
Khosro Khosrotehrani 1
Masoumeh Sohrabi Mollayoosefy 2
1 Islamic Azad University , Science and Research Branch , Tehran, Iran
2 Islamic Azad University , Eslam shahr Branch, Tehran, Iran
Abstract
Diatomites of Azarbayjan region are siliceous sediment formed by deposition of  diatom frustules.
In this research we focused on systematics of diatomes and uesd  polarizing and scanning electron microscope (SEM) to study the  samples.
Finally 17 genus and 33 species of diatoms were recognized  and systematic determination of  them  presented.We found that the population  of Centrales was less than  that of Pennales and the age of the deposites  determined as Late Pliocene to Pleiostocene . Study of nannofacies of diatomites made it clear that the samples of Mameghan region have  better quality and samples of Maragheh  need more  processing .
Systematic study of diatomes  morphology by ultramicroscope, internal  strucure, size and percentage abundance  helped  us to determine nannoporosity and  the degree of Purity to use for multiple purposes such as filteration, medical ,health, chemistry industries and etc…
Keywords
Diatome
Diatomite
Azerbayjan
Iran

Subjects

Bignot, G., 1981- Les Diatomites et leurs Nannofacies. Bull. Soc . geol . Normandie et Amis Museum du Havre , t.LXVIII , fasc . 1.
Cox ,E.J., 1996- Identification of Freshwater Diatoms from live Material. Chapman & Hall , Boundary Row , London SE1 8 HN , U.K. 158 PP.
Kamei – T. et al., 1977-  A General Report of the Geological & paleontological Survey in Maraghe Arae, North West Iran , 1973 . Series of Geology and mineralogy Vol.XLIII , No. ½ KYOTO.
Round,F.E.Craword,R.M & Mann D.G., 1992- The Diatoms,Biology and Morphology of genera. Cambridge university Press. 747 pp.
Van Landingham.S.L., 1967-79-Catalogue of the Fossil and Recent Genera and Species of Diatoms and their synonyms. 8 vols. Vadus : J. Cramer 4654 pp.
Van Heurck , 1896- .A Treatise on the diatoms. Reprint 1962 By WHELDON & WESLEY , LTD. And VERLAG J. CRAMER 558 PP. 35 PL.
Scientific Quarterly Journal of Geosciences
Volume 14, Issue 54
Winter 2005, Vol. 14, No.54
Winter 2005
Pages 96-107