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Multiple Deformation in the Almora Group of Rocks Around Paharpani, District Nainital (U.P.)
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The medium grade metasedimentary rocks of Precambrian age around Paharpani, occurring in association with magmatites, gneisses, granites and/or granodiorites constitute a part of the Almora Group. The rocks show complex structures resulting from multipe deformations. Mesoscopic and macroscopic struc1ures indicate that the intense first deformation produced tight to isoclinal reclined folds (F1), leading to thrusting of the Almora Group of rocks over the low grade metasedimentary rocks of the Ramgarh Group along the South Almora Thrust. The effect of less severe deformation on these F1 folds was the formation of warps, crenulations and upright to inclined folds (F2), which show a variation in trend from NW/WNW to SE/ESE and plunge from 12° to 40°, The last phase of deformation produced NNE-ENE trending asymmetrical, open folds (F3) and crenulations. Superposition of F2 folds has resulted in type 1 interference patterns of Ramsay.
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