Indications of petroleum (0)
| Gas seep, confirmed |
| Gas seep, reported but doubtful or disproved |
| Gas seep, reported but unconfirmed |
| Oil seep, reported but doubtful or disproved |
| Oil seep, reported but unconfirmed |
| Outcrop of oil shale or oil-bearing rock |
| Well with gas show(s) |
| Well with no oil or gas shows |
| Well with oil show(s) |
Sedimentary basins by age (1)
| unknown |
| Late Tertiary and Quaternary |
| Lower Tertiary |
| Mesozoic |
| Paleozoic-Mesozoic |
|