Q 4(a). समनति रेखा के आधार पर वलन वर्गीकरण का सचित्र वर्णन कीजिए । (UPSC 2025,20 Marks,250 Words)

Theme: Classification of Folds Based on Dip Isogons Where in Syllabus: (The subject of the above question is Geology.)
On the basis of dip isogons describe the classification of folds with neat diagrams.