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Geology LibreTexts

Geometric Models

A model for the form of a geologic structure in the earth. The model is deduced from limited observations, usually at the surface. The model makes no further assumptions about how the structure formed. Consideration of formation mechanisms may lead to refinement of the geometric model.

Example: Dips of rocks change, age of strata increases then decreases across change in dip. Conclude that there is an anticline.