Paper Information

Journal:   IRANIAN JOURNAL OF GEOLOGY   SUMMER 2006 , Volume 2 , Number 5; Page(s) 29 To 42.
 
Paper:  ORIGINAL MINERALOGY AND DIAGENETIC PROCESSES OF THE SOLTANIEH FORMATION AT TYPE SECTION BASED ON GEOCHEMICAL STUDIES
 
Author(s):  SIAB GHODSI A.A.*, ADAABI M.H., HAMDI B.A.D., SADEGHI ABAS
 
* DEPARTMENT OF GEOLOGY, ORUMIEH UNIVE., ORUMIEH
 
Abstract: 

The Soltanieh Formation “Southeast Zanjan” consists mainly of carbonate and shale sequences.

Geochemical studies such as sr/Ca and d18 values of shows that these carbonates were affected mostly by open system meteoric digenesis. Distribution of major and minor elements such as Sr/Na and Mn versus Na and d18 O and d13 C values of limestones in Soltanieh Formation indicates that the mineralogy of carbonate were originally aragonite. These data fall within the Mozduran limestone and Gordon limestone (Tasmania, Australia) fields due to similar aragonite mineralogy. Original aragonite mineralogy for Neoproterozoic limestones from other parts of the world has also been suggested and can support our interpretation.
Light
d13 (-4.57 0/00  VPDB) values in Soltanieh limestone support meteoric diagenesis and Sr/Mn variation indicates high dissolution rate of limestone.

Pale temperature calculations, d18 O values (-5.83 0/00 VPDB) and dw 3±1 , range between 23% - 31%c, respectively.
 
Keyword(s): DIAGENESIS, GEOCHEMISTRY, IRAN, ORIGINAL MINERALOGY, SOLTANIEH FORMATION, STABLE ISOTOPE
 
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