Statistical Analysis of the Minor Fold Axes in a Part of Dudhatoli Synform Around Thalisain, Garhwal Himalaya, U. P

Abstract

Within the Dudhatoli Group in the southern limb of Dudhatoli synform four mappable units have been recognised viz., the Dudhatoli granitoids, Dudhatoli schist, Flaggy quartzite and the Manila phyllite. In the area under study two generations of minor folds are recognised. Statistical analysis of minor fold axes has been carried out. It is concluded that the axes of two fold generations are not randomly distributed, they have different mean plunge direction with 2 and 196 degree of freedom. The folds of first generation (F₁ have little or poor clustering while folds of second generation (F₂) have close clustering. It is also envisaged that F₁ and F₂ folds have been formed under different tectonic environment.