Sly Gap Formation
| Sly Gap Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Underlies | Percha Formation, Contadero Formation |
| Overlies | Onate Formation |
| Thickness | 114 feet (35 m) |
| Lithology | |
| Primary | limestone |
| Other | siltstone, shale |
| Location | |
| Coordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | New Mexico |
| Country | United States |
| Type section | |
| Named by | F.V. Stevenson |
| Year defined | 1945 |
Sly Gap Formation (the United States) Sly Gap Formation (New Mexico) | |
The Sly Gap Formation is a geologic formation in south-central New Mexico. It preserves fossils dating back to the Frasnian Age of the late Devonian period.[1]
Description
[edit | edit source]The formation consists of about 114 feet (35 m) of brown, yellow, or gray limestone and siltstone and brown to greenish-gray shale. It disconformably overlies the Onate Formation and is overlain by the Percha Formation[1][2] or the Contadero Formation.[2] It pinches out in the west in the Basin and Range province.[1]
Fossils
[edit | edit source]The formation includes crinoidal siltstone beds and many other beds are fossiliferous, bearing crinoid, brachiopod, bryozoan, anthozoan, cephalopod, gastropod, fish, and coral remains.[1]
See also
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Footnotes
[edit | edit source]References
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