stratigraphic unit
C1098
concept
A stratigraphic unit is a volume of rock or sediment defined and distinguished from adjacent material by its recognizable and mappable physical, chemical, or paleontological characteristics and its position in the geological record.
All labels observed (62)
| Label | Occurrences |
|---|---|
| stratigraphic unit canonical | 65 |
| sedimentary rock unit | 59 |
| chronostratigraphic unit | 30 |
| geologic group | 23 |
| rock unit | 12 |
| lithostratigraphic unit | 9 |
| sedimentary rock formation | 9 |
| geologic supergroup | 7 |
| lithostratigraphic group | 6 |
| sedimentary rock sequence | 6 |
| carbonate rock unit | 5 |
| tectonostratigraphic unit | 5 |
| Cretaceous stratigraphic unit | 4 |
| fossil-bearing stratigraphic unit | 4 |
| chronostratigraphic boundary | 3 |
| geologic unit | 3 |
| geological group | 3 |
| member (stratigraphy) | 3 |
| metamorphic rock sequence | 3 |
| coal-bearing formation | 2 |
| geological layer | 2 |
| igneous rock unit | 2 |
| subdivision of the Devonian Period | 2 |
| tectonostratigraphic zone | 2 |
| Devonian stratigraphic unit | 1 |
| Mesozoic stratigraphic unit | 1 |
| Ordovician stratigraphic unit | 1 |
| Permian rock unit | 1 |
| Permian stratigraphic unit | 1 |
| Pleistocene stratigraphic unit | 1 |
| Precambrian rock unit | 1 |
| Proterozoic rock unit | 1 |
| Silurian stratigraphic unit | 1 |
| Triassic rock unit | 1 |
| Triassic stratigraphic unit | 1 |
| ammonite zone | 1 |
| biostratigraphic subdivision | 1 |
| biostratigraphic zone | 1 |
| coal-bearing stratigraphic unit | 1 |
| crystalline limestone | 1 |
| epoch of the Quaternary Period | 1 |
| formal chronostratigraphic unit | 1 |
| fossil-based correlation unit | 1 |
| fossiliferous stratigraphic unit | 1 |
| geologic member | 1 |
| geologic series | 1 |
| geological horizon | 1 |
| limestone unit | 1 |
| mass extinction boundary | 1 |
| metamorphosed sedimentary rock sequence | 1 |
| rock sequence | 1 |
| rock succession | 1 |
| sedimentary rock succession | 1 |
| sedimentary sequence | 1 |
| stratigraphic group | 1 |
| stratigraphic level | 1 |
| stratigraphic sequence | 1 |
| stratigraphic subdivision | 1 |
| stratigraphic subgroup | 1 |
| stratigraphic succession | 1 |
| stratigraphic supergroup | 1 |
| subsurface geological unit | 1 |
Instances (241)
| Instance | Via concept surface |
|---|---|
| Toroweap Formation | sedimentary rock unit |
| Illinoian Stage | Pleistocene stratigraphic unit |
|
Mount Blanco (geologic formation)
surface form:
Mount Blanco Formation
|
— |
| Pennine Coal Measures Group | lithostratigraphic group |
| Aztec Sandstone | sedimentary rock unit |
| Navajo Sandstone | sedimentary rock unit |
| Kayenta Formation | sedimentary rock unit |
| Supai Group | geologic group |
| Kaibab Limestone | sedimentary rock unit |
| Cretaceous | — |
| Pridoli Epoch | chronostratigraphic unit |
| Middle Devonian | subdivision of the Devonian Period |
| Holocene | epoch of the Quaternary Period |
| Moine Supergroup | metamorphic rock sequence |
| Grampian Group | geological group |
| Appin Group | geologic group |
| Carboniferous Limestone | sedimentary rock unit |
| Magnesian Limestone succession | stratigraphic succession |
| Chinle Formation | — |
| Earth lithosphere | geological layer |
| Siderian Period | chronostratigraphic unit |
| Rhyacian Period | chronostratigraphic unit |
| Statherian Period | chronostratigraphic unit |
| Sanders Group | geologic group |
| Erathem | chronostratigraphic unit |
| Calymmian Period | chronostratigraphic unit |
| Ectasian Period | chronostratigraphic unit |
| Stenian Period | chronostratigraphic unit |
| Harrodsburg Limestone | carbonate rock unit |
| Mitchell Limestone | — |
| Oligocene Epoch | chronostratigraphic unit |
| Moldanubian Zone | tectonostratigraphic unit |
| Saxothuringian Zone | tectonostratigraphic unit |
| Tethyan Himalaya | tectonostratigraphic zone |
| Moravo–Silesian Zone | tectonostratigraphic zone |
|
Salem Limestone formation
surface form:
Salem Limestone
|
limestone unit |
| Entrada Sandstone | sedimentary rock unit |
| Summerville Formation | sedimentary rock unit |
| Sundance Formation | sedimentary rock unit |
| San Rafael Group | geologic group |
| Corallian Group | geologic group |
| Dakota Formation | sedimentary rock unit |
| Kellaways Formation | lithostratigraphic unit |
| Cloverly Formation | sedimentary rock unit |
| Early Devonian | subdivision of the Devonian Period |
| Permian Garber Sandstone | sedimentary rock unit |
| Wellington Formation | — |
| Dalradian Supergroup | geologic supergroup |
| Heavitree Quartzite | Proterozoic rock unit |
| Pertnjara Group | geologic group |