Assertion: fold | /r/HasProperty | formed
Facets:
value: by shortening of existing layers
type: CAUSE
value: commonly
type: DEGREE
Source sentences:
text: Folds are commonly formed by shortening of existing layers, but may also be formed as a result of displacement on a non-planar fault (fault bend fold), at the tip of a propagating fault (fault propagation fold), by differential compaction or due to the effects of a high-level igneous intrusion e.g. above a laccolith.
text: Folds are formed when heat and pressure is applied to the rock.
text: Folds are commonly formed by shortening of existing layers, but may also be formed as a result of displacement on a non-planar fault (fault bend fold), at the tip of a propagating fault (fault propagation fold), by differential compaction or due to the effects of a high-level igneous intrusion e.g. above a laccolith.