| CO undivided Carboniferous to Ordovician rocks |
| Cmsm Cambrian sedimentary and metamorphic rocks |
| Cs Carboniferous sedimentary rocks |
| D undivided Devonian rocks |
| H2O Water |
| I undivided igneous rocks |
| JTr Jurassic and Triassic rocks |
| Mzim Mesozoic and intrusive metamorphic rocks |
| Jms Jurassic metamorphic and sedimentary rocks |
| KJs Cretaceous and Jurassic sedimentary rocks |
| Ks Cretaceous sedimentary rocks |
| MzPzi Mesozoic and Paleozoic intrusive and metamorphic rocks |
| N Neogene sedimentary rocks |
| Osm Ordovician sedimentary and metamorphic rocks |
| Pg Paleogene sedimentary rocks |
| Pr undivided Permian rocks |
| Pzi Paleozoic igneous rocks |
| Pz undivided Paleozoic rocks |
| Pzl Lower Paleozoic rocks |
| Pzu Upper Paleozoic rocks |
| Q Quaternary sediments |
| Qs Quaternary sand and dunes |
| S undivided Silurian rocks |
| SOc Silurian and Ordovician carbonate rocks |
| TKim Tertiary and Cretaceous igneous and metamorphic rocks |
| TKs Tertiary and Cretaceous sedimentary rocks |
| TKv Paleocene Cretaceous extrusive rocks |
| Ti Tertiary igneous rocks |
| TrCs Lower Triassic to Upper Carboniferous sedimentary rocks |
| TrPr Triassic and Permian rocks |
| Trms Triassic |
| Ts Tertiary sedimentary rocks |
| Tv Tertiary extrusive rocks |
| pC undivided Precambrian rocks |
