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
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Total article views: 2,034 (including HTML, PDF, and XML)
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Total article views: 1,316 (including HTML, PDF, and XML)
Thereof 1,034 with geography defined
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Total article views: 718 (including HTML, PDF, and XML)
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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.
We explore pre-existing fabric in metabasalts replete with a wide range of crisscross...