Smeltertown Formation
| Smeltertown Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Underlies | Muleros Formation |
| Overlies | Del Norte Formation |
| Thickness | 193 feet (59 m) |
| Lithology | |
| Primary | Shale |
| Other | Siltstone, sandstone |
| Location | |
| Coordinates | 31°47′39″N 106°32′35″W / 31.7940792°N 106.5430513°W |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named for | Smeltertown |
| Named by | W.S. Strain |
| Year defined | 1976 |
  Smeltertown Formation (the United States)  Smeltertown Formation (New Mexico) | |
The Smeltertown Formation is a
period.[1]
Description
The formation consists of gray shale with some interbedded siltstone and silty limestone, with some fine grained sandstone towards the top of the formation. The total thickness is 193 feet (59 m). It rests conformably on the Del Norte Formation and is conformably overlain by the Muleros Formation.[1]
Fossils
Fossils are uncommon in the formation.benthic species more common towards the top) suggests that the sea in the area was shallowing during deposition of the formation.[4]
See also
Footnotes
- ^ a b c Strain, W.S. (1976). "New formation names in the Cretaceous at Cerro de Cristo Rey, Dona Ana County, New Mexico; Appendix 2" (PDF). New Mexico Bureau of Mines and Mineral Resources Memoir. 31: 77–82. Retrieved 5 August 2020.
- ^ Sealey, Paul L.; Lucas, Spencer G.; Durney, Kevin (2018). "The rare early Cretaceous (late Albian) nautiloid Cymatoceras cf. C. Loeblichi Miller and Harris from Cerro de Cristo Rey, Dona Ana County, New Mexico". New Mexico Museum of Natural History and Science Bulletin. 80: 659–666. Retrieved 16 September 2020.
- .
- JSTOR 1303903.