The Study of Metamorphic Rocks, Zonation and Isogrades in Garnet Rocks in the Hamadan Area
Zahra Hossein Mirzaei Beni1*and Zahreh Hossein Mirzaei Beni1
1Young Research Club, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran
http://dx.doi.org/10.12944/CWE.7.1.10
The study area is a part of the Sanandaj- Sirjan metamorphic belt. We can divide Hamadan metamorphic rocks in three groups: regional metamorphic rocks, contact metamorphic rocks and migmatites. In this area we can’t completely divide zonation of contact and regional metamorphic. In some places that contact metamorphic has influenced to low degree regional metamorphic rocks, contact metamorphic zonations are clearly appear, but when contact and regional metamorphic have a same degree or regional metamorphic has high degree than contact metamorphic, we can’t distinguish them easily. In Hamadan area regional metamorphic zones are Chlorite± Biotite zone (we haven’t garnet rocks in this zone), Biotite± Garnet zone (divided in two sub zone, Biotite and Garnet zone), Andalusite zone, Staurolite zone, Staurolite± Andalusite zone, Sillimanite- Muscovite zone and Sillimanite- Potassium feldspar± Cordierite zone, also contact metamorphic zones are Cordierite zone and Cordierite- Potassium feldspar zone.
Contact Metamorphic; Garnet; Isogrades; Metamorphic Zonation; Migmatites; Regional Metamorphic
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Beni ZHM, Beni ZHM. The Study of Metamorphic Rocks, Zonation and Isogradesin Garnet Rocks in the Hamadan Area. Curr World Environ 2012;7(1):55-59 DOI:http://dx.doi.org/10.12944/CWE.7.1.10
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Beni ZHM, Beni ZHM. The Study of Metamorphic Rocks, Zonation and Isogrades in Garnet Rocks in the Hamadan Area. Curr World Environ 2012;7(1):55-59. Available from://www.a-i-l-s-a.com/?p=1811
