Volume 23, Issue 2 (7-2015)                   www.ijcm.ir 2015, 23(2): 215-224 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Geothermometry of deformation in the marbles based on the twinning in the northeastern of Jan Mine, Sanandaj-Sirjan Zone, Lorestan Province. www.ijcm.ir. 2015; 23 (2) :215-224
URL: http://ijcm.ir/article-1-167-en.html
Abstract:   (2427 Views)

The study area is a part of Sanandaj- Sirjan Zone that is located in the northeastern of the dimension stone of Jan mine in north of Doroud city on Lorestan Province. It is mainly composed of deformed metamorphic rocks including deformed marbles associated with mylonitic gneiss- granite and amphibolite. The main texture of the marbles is lepidogranoblastic and their mineralogical composition are calcite, quartz, phengitic muscovite, epidote, sphene, opaque minerals and minor plagioclase. Calcite grains have preferred orientation, which show strain and crystal-plastic deformation. The formation of flayser texture in the quartz lenses, undulatory extinction in the quartz grains, existence of pining microstructures, dynamic recrystallization as grains boundary migration (GBM) between calcite and quartz, bulging recrystallization (BLG) in the quartz grain boundaries along fracture planes, Subgrain Rotation (SGR) and also, deformation twinning in calcite crystals show the temperature of deformation ranges from 150 to 300 °C for the marbles.

Full-Text [PDF 128 kb]   (522 Downloads)    
Type of Study: Research | Subject: Special

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2021 CC BY-NC 4.0 | Iranian Journal of Crystallography and Mineralogy

Designed & Developed by : Yektaweb