Writers : Usefzade,Nohammad Hosein;Sabzei,Mosaieb
Refference : The 20th Symposium on Geoscience;Tehran
Publishing Year : 1380

Abstract :

The studied area in this research is located in sw Birjand (S Khorasan). The vast outcrop of listventites is the most interesting geological phenomena in this area . Ingeneral, Iistvenites has formed in alcali condition by core enrichment hydrothermal solutions. During this reactions ,primary paragenesis of minerals is changed to silisic-carbonate assemblages. This process generally occurred at locality in which there is chanals for transport of hydrothermal solution. Fault zone, bedding surfaces, rock unit boundary are the most important locality, that linear trend of listvenite shows it. From physicochernical aspect, this reaction happened in conditions with P11 about by enrichment solution (winkler). Form thermodynamic aspect. based on changes of T versus ‍Co2(in P constant), reactions containing core and divided in live groups in which listvenitation reacation is situated in carbonation- dedydration group and its carve have a negative slope meaning that with increasing of XCo2. the low temperature is required for reaction (greenwood1976)

Subject List : Listwaenite