These examples show the basic functionality to create geometries.
1.1 -Basics of geological modeling with GemPy
1.3a: Grids.
1.3b: 2-D sections
1.3c: Adding topography to geological models
1.4: Unconformity relationships
1.5: Fault relations
1.6: 2D Visualization.
1.7: 3-D Visualization
