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| Description: Anticline – upfolded, or arched, rock layers Syncline – downfolded rock layers Deformation – general term that refers to all changes in the original form and/or size of a rock body Most crustal deformation occurs along plate margins Factors that influence the strength of a rock Temperature and confining pressure Rock type Time Rocks bent into a series of waves Most folds result from compressional forces which shorten and thicken the crust Anticlines and synclines can be Symmetrical – limbs are mirror images Asymmetrical – limbs are not mirror images Overturned – one limb is tilted beyond the vertical Where folds die out they are said to be plunging Picture Stats: Views: 239 Filesize: 1.35MB Height: 665 Width: 1067 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39585 |