Geothermometry marbles and Neyriz area

Category Petrology
Group GSI.IR
Location 23th symposium on geosciences
Holding Date 05 May 2008

      Neyriz marbles and skarns over lies on ophiolitic ultramafic rocks in this area. These rocks have outcrop in two regions, Chah savar agha and Tang- e- Hana in the west north Neyriz. Often the boundary of between marbles and skarns is fault with ultramafic rocks.
   Calcite is the important minerals components of these rocks. These minerals in the marbles rocks Also calcite is the important mineral of skarns bearing olivine, skarn bearing garnet- spinel, skarn bearing wollastonite and garnetite rocks. Deformation twins are the calcite charatristics that is formed influence heat. Twins of thins have direct relationship with deformation tempreture. Four different type of deformation twins have recognized that every one of display tempreture limitation and according to these we can determine the formation tempreture of the final stage of metamorphism. On the base of study of rocks in this region and in this area deformations twins is the lowest of temprature of formation for marbls and highest of temperature is for garnetite rocks, skarn bearing plagioclase and skarn bearing sphene. Hence marbles display the rather temperature in contact setting with predotite (serpentinization).

tags: FARS