Articles | Volume 11, issue 4
Solid Earth, 11, 1227–1246, 2020

Special issue: Faults, fractures, and fluid flow in the shallow crust

Solid Earth, 11, 1227–1246, 2020

Research article 08 Jul 2020

Research article | 08 Jul 2020

Control of pre-existing fabric in fracture formation, reactivation and vein emplacement under variable fluid pressure conditions: an example from Archean greenstone belt, India

Sreyashi Bhowmick and Tridib Kumar Mondal

Related subject area

Subject area: Tectonic plate interactions, magma genesis, and lithosphere deformation at all scales | Editorial team: Structural geology and tectonics, rock physics, experimental deformation | Discipline: Structural geology
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Cited articles

Acharyya, S. S. and Mondal, T. K.: Stress enhanced tensile fractures in elliptical clast in conglomerate, J. Struct. Geol., 122, 81–88,, 2019. 
Angelier, J.: Fault slip analysis and paleostress construction, in: Continental Deformation, edited by: Hancock, P. L., Pergamon Press, London, 1994. 
ASTM: American Society for Testing and Materials, ASTM Standards on Disc, 04.08, West Conshohocken, PA, 2001. 
Attewell, P. B. and Sandford, M. R.: Intrinsic shear strength of a brittle, anisotropic Rock-I. Experimental and mechanical interpretation, Int. J. Rock Mech. Min., 11, 423–430,, 1974. 
Aydin, A. and Basu, A.: The use of Brazilian test as a quantitative measure of rock weathering, Rock Mech. Rock Eng., 39, 77–85,, 2006. 
Short summary
We explore pre-existing fabric in metabasalts replete with a wide range of crisscross fractures/faults, hosting quartz veins of variable orientations and thicknesses in the Chitradurga region, India. The fractures are identified as components of a riedel shear system. We evaluate reactivation potential of fractures and conclude that episodic changes in fluid pressure conditions triggered fault-valve action, thereby reactivating fabric and fractures, leading to vein emplacement in the region.