| Outer boundary of floor of terrestrial impact crater |
| Outer boundary of central mound of complex terrestrial impact crater |
| Highway |
| Anticline-approximate |
| Leader |
| Anticline-concealed |
| Anticline-certain |
| Normal fault-certain |
| Normal fault-concealed |
|
| Generic fault-certain |
|
| Generic fault-concealed |
| Generic fault-approximate |
|
| Reverse fault-certain |
|
| Reverse fault-concealed |
|
| Reverse fault-approximate |
|
| Normal fault-approximate |
| Contact-certain |
| Map boundary |
|
| Asymmetric anticline-certain |
|
| Asymmetric anticline-concealed |
|
| Asymmetric anticline-approximate |
