A
fold, closing in any direction, in which the older rocks occupy the
core. Anticlinal folds can be either
symmetrical or
asymmetrical. Symmetrical folds resemble an upside down U-shape.
Represented visually:
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********/#######/\######\*********
*******/#######/=\#######\********
******/#######/==\########\********
*****/#######/===\#########\******
****/#######/====\#########\******
***/#######/=====\##########\*****