The Study of the Crystal Size Distribution (CSD) of Garnet in the Hassan-Abaad Contact Metamorphism of Yazd

Zandifar, S.; Valizadeh, M.V.; Barghi, M. A.; Foroodijahromi, M. R.

doi:10.22071/gsj.2010.57218

Document Type : Original Research Paper

Authors

¹ School of Geology, University College of Sciences,Tehran University, Tehran, Iran

² Department of Geology, Islamic Azad University, Science and Research campus, Tehran, Iran

https://doi.org/10.22071/gsj.2010.57218

Abstract

The crystallization history of a rock is recorded by the size and the distribution of its minerals. The porphyroblast crystal size in metamorphic rocks can give notable information about its growing medium. Considering the varieties of mineralogy in the Hassan-Abad's skarn and high frequency of garnet porphyroblasts in different metamorphic zones and special different sizes in the first metamorphic zone of the NE skarn, the crystal size distributions of this mineral is studied. With regard to this, digital photos of cutting surface were provided and analyzed by JMicrovision software. It has been expected, two different slopes can show three suspections: 1- parent rock composition effect; 2- crystal growing time; 3- fluid flow around plutonic rock. According to the presence of clintonite, vesuvianite and garnet and as many as joints in the region, the role of fluid in growing the size of garnet porphyroblast in part of the first metamorphic zone seem to be noticeable.

Keywords

20.1001.1.10237429.1388.19.73.18.1

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Scientific Quarterly Journal of Geosciences

The Study of the Crystal Size Distribution (CSD) of Garnet in the Hassan-Abaad Contact Metamorphism of Yazd

References

References

Volume 19, Issue 73 - Serial Number 73
January 2009
Pages 147-152

The Study of the Crystal Size Distribution (CSD) of Garnet in the Hassan-Abaad Contact Metamorphism of Yazd

References

References

Volume 19, Issue 73 - Serial Number 73January 2009Pages 147-152

Volume 19, Issue 73 - Serial Number 73
January 2009
Pages 147-152