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by | Feb 6, 2018 | Medium Trees

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The Al Rose Formation is a geologic formation in California. It consists mostly of siltstone, mudstone and shale, with some chert and occasional limestone. In it are found graptolite and trilobite fossils dating back to the Ordovician period.[2]

See also

References

  1. ^ a b c d Donald C. Ross (1963). "New Cambrian, Ordovician, and Silurian Formations in the Independence quadrangle, Inyo County, California" (PDF). Geological Survey Professional Paper. 475B: B74–B85. ISSN 0096-0446. Wikidata Q66311354.
  2. ^ a b c Donald Clarence Ross (1966). "Stratigraphy of some Paleozoic formations in the Independence quadrangle, Inyo County, California" (PDF). Geological Survey Professional Paper. 396. doi:10.3133/PP396. ISSN 0096-0446. Wikidata Q61048695.
  3. ^ Paul Stone; G.C. Dunne; C.H. Stevens; R.M. Gulliver (1989), Geologic map of Paleozoic and Mesozoic rocks in parts of the Darwin and adjacent quadrangles, Inyo County, California, doi:10.3133/I1932, Wikidata Q57855860


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