Relationship between shear zones and igneous activity: The Closepet Granite of Southern India |
| |
Authors: | M Jayananda B Mahabaleswar |
| |
Institution: | (1) Department of Geology, Bangalore University, 560056 Bangalore, India |
| |
Abstract: | The late Archaean Closepet granite of southern India is bounded by N-S trending shear zone. At the southern end of the granite
both charnockite and granite veins are spatially associated with ductile shears. These shears continue further north and are
confined to the contact zones in the central part of the granite outcrop. The main component of the shear zone are highly
deformed granite sheets, augen gneisses and mylonites. Field observations and microstructural fabric of mylonites indicate
a dextral sense of shear movement. Field evidence suggests that shear deformation was active throughout the evolution of the
Closepet granite |
| |
Keywords: | Shear zone granite charnockite mylonite deformation |
本文献已被 SpringerLink 等数据库收录! |