deflection fold

Structure around a porphyroblast in which Se is deflected through isoclinal folding at both sides of the porphyroblast (Fig. 7.22b)

Related terms:

• deflection plane
• astrogeodetic deflection
• relative deflection
• deflection of the vertical
• deflection angle
• helicitic fold
• passive fold
• plains-type fold
• crush fold
• flow fold