inter-limb angle Geometric elements of folds Review of geometrical elements of folds Classification of folds (continue) Based on four main features or properties: 1 direction of closing and facing 2 attitude of axial surface 3 size of inter-limb angle, and 4 shape of profile 5 dip isogons Classification of fold based on direction of closing and facing Downwards-facing upwards-facing Facing towards the left Classification of folds based on the attitude of axial surface Trap for oil or gas Classification of folds based on the inter-limb angle Gentle Open Close Tight Isoclinal A . Constant Bed Thickness perpendicular to Fold surface B. Thickness constant parallel to axial surface C. mon center of curvature D. Planar limbs and sharp angular hinge zone Classification of folds based on the fold profile Parallel folds Detachment zone Kink band Markedly asymmetric chevron with a very long limb and a very short limb The band is the zone in which mon short straight limb Bounded by the two adjacent fold surfaces Classification of folds based on shape of profile Variation in layer thickness the perpendicular to the axial surface Method of measuring variation in layer thickness t in a is made at the point where the tangent to the outer curve makes an angle with the perpendicular to the axial surface
(13) lecture 13 dip isogons and fold system 来自淘豆网m.daumloan.com转载请标明出处.
