Tecomazuchil Formation
The Tecomazuchil Formation is a geologic formation in Mexico. It preserves fossils dating back to the Jurassic period. It's made up of "a basal conglomerate 135 m thick and predominantly composed of quartz and metamorphic rock fragments, overlain by about 600 m of interbedded tan to red conglomerates, sandstones, and siltstones. The Tecomazuchil Formation overlies unconformably the Acatlán Complex and has been assigned a Middle Jurassic age, though it could represent at least part of the Oxfordian."[2]
| Tecomazuchil Formation Stratigraphic range: Jurassic | |
|---|---|
| Type | Geological Formation |
| Underlies | Chimeco Limestone |
| Overlies | Acatlán Complex |
| Lithology | |
| Primary | Silty Sandstone[1] |
| Location | |
| Region | Puebla Province |
| Country |  |
| Type section | |
| Named by |
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References
- "3 Ayuquililla (Jurassic of Mexico)". FossilWorks. Retrieved 5 April 2017.
- Westermann, Gerd E. G. (1992). The Jurassic of the Circum-Pacific. Cambridge University Press. p. 100. ISBN 0521019923. Retrieved 5 April 2017.
External links
- "Fossilworks: Gateway to the Paleobiology Database"
- "Mesozoic Sedimentary and Tectonic History of North-central Mexico", Issue 340
- Paleomagnetic study of Jurassic and Cretaceous rocks from the Mixteca terrane (Mexico)
- A new species of Weltrichia (Bennettitales) from the Middle Jurassic of the Tecomazuchil Formation (Oaxaca, Mexico)
- Magnetostratigraphy of a Middle Jurassic red bed sequence from southern Mexico
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