Mint Canyon Formation
| Mint Canyon Formation | ||
|---|---|---|
Ma | ||
Approximate paleocoordinates 33°54′N 115°00′W / 33.9°N 115.0°W | | |
| Region | Los Angeles County, California | |
| Country |  United States | |
| Extent | Sierra Pelona Ridge, San Gabriel Mountains | |
| Type section | ||
| Named for | Mint Canyon | |
| Named by | Kew | |
| Year defined | 1923 | |
  Mint Canyon Formation (the United States)  Mint Canyon Formation (California) | ||
The Mint Canyon Formation (Tm) is a
Sierra Pelona Mountains of Los Angeles County, southern California.[1] The formation preserves fossils dating back to the Middle to Late Miocene (Barstovian and Clarendonian in NALMA classification).[2]
Geology
Mint Canyon is a fluvial landform in the Sierra Pelona range. It consists of terrestrial deposits from streams and lakes consisting mostly of sandstone and conglomerate with some claystone.[1][3]
The formation correlates with the
angular unconformity in some places, and it is apparently conformable and gradational in others.[5]
Fossil content
The formation preserves vertebrate
period:[2]
Mammals
Artiodactyls
- ?Merycodus sp.[7]
- Camelidae indet.[8]
- Tayassuidae indet.[8]
Perissodactyls
- Hipparion cf. forcei[8]
- Hipparion sp.[7][8]
- ?Nannippus sp.[8]
- Equini indet.[9]
- Hipparionini indet.[9]
- Rhinocerotidae indet.[9]
Rodents
Proboscideans
Carnivora
See also
References
- ^ a b Elsmerecanyon.com: "Tick Canyon Geology"
- ^ a b Mint Canyon Formation at Fossilworks.org
- ^ "Geologic Map of the Mint Canyon Quadrangle" (DF-57) by Thomas W. Dibblee, Jr., 1996.
- ^ Coffey et al., 2019, p.480
- ^ a b Coffey et al., 2019, p.481
- ^ Coffey et al., 2019, p.492
- ^ a b c Stirton, 1933
- ^ a b c d e f g Maxson, 1930
- ^ a b c Alroy, 2002
Bibliography
- Coffey, Kevin T.; Raymond V. Ingersoll, and Axel K. Schmitt. 2019. Stratigraphy, provenance, and tectonic significance of the Punchbowl block, San Gabriel Mountains, California, USA. Geosphere 15. 479–501. .
- Alroy, J. 2002. Synonymies and reidentifications of North American fossil mammals, .. _.
- Stirton, R.A. 1933. Critical review of the Mint Canyon mammalian fauna and its correlative significance. American Journal of Science 226. _. .
- Maxson, J. H. 1930. A Tertiary mammalian fauna from the Mint Canyon Formation of Southern California. Carnegie Institution of Washington Publication 404. 77–112. .
Further reading
- Geology of the Mint Canyon Area by William T. Holser, 1946