The Tecomazuchil Formation is a geologic formation in Oaxaca, Mexico. It is 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] Fossil Bennettitales have been found in the formation.[3]
| Tecomazuchil Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological Formation |
| Underlies | Chimeco Limestone |
| Overlies | Acatlán Complex |
| Lithology | |
| Primary | Silty Sandstone[1] |
| Location | |
| Region | Puebla Province |
| Country |  Mexico |
| Type section | |
| Named by |
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See also
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References
edit- ^ "3 Ayuquililla (Jurassic of Mexico)". FossilWorks. Retrieved 17 December 2021.
- ^ Westermann, Gerd E. G. (1992). The Jurassic of the Circum-Pacific. Cambridge University Press. p. 100. ISBN 0521019923. Retrieved 5 April 2017.
- ^ Lozano-Carmona, Diego E.; Corro-Ortiz, Marcos Germán; Morales, René Luis; Velasco-De León, María Patricia (2021-06-01). "Weltrichia xochitetlii sp. nov. (Bennettitales) from the Middle Jurassic of northwestern oaxaca, Mexico: First paleobotanical evidence from the Tecomazúchil Formation". Journal of South American Earth Sciences. 108: 103230. doi:10.1016/j.jsames.2021.103230. ISSN 0895-9811. S2CID 234085434.
External links
edit- "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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