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HandWiki. Juncal Formation. Encyclopedia. Available online: https://encyclopedia.pub/entry/32498 (accessed on 14 October 2026).
HandWiki. Juncal Formation. Encyclopedia. Available at: https://encyclopedia.pub/entry/32498. Accessed October 14, 2026.
HandWiki. "Juncal Formation" Encyclopedia, https://encyclopedia.pub/entry/32498 (accessed October 14, 2026).
HandWiki. (2022, November 02). Juncal Formation. In Encyclopedia. https://encyclopedia.pub/entry/32498
HandWiki. "Juncal Formation." Encyclopedia. Web. 02 November, 2022.
Juncal Formation
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The Juncal Formation (also Juncal Shale) (/ˈdʒʊŋkɑːl, ˈhuːŋ/) is a prominent sedimentary geologic unit of Eocene age found in and north of the Santa Ynez Mountain range in southern and central Santa Barbara County and central Ventura County, California. An enormously thick series of sediments deposited over millions of years in environments ranging from nearshore to deep water, it makes up much of the crest of the Santa Ynez range north of Montecito, as well as portions of the San Rafael Mountains in the interior of the county. Its softer shales weather to saddles and swales, supporting a dense growth of brush, and its sandstones form prominent outcrops.

juncal shale swales

References

  1. Dibblee (1966) 21-22
  2. Dibblee (1966) 22
  3. Norris, Robert M. (2003). The geology and landscape of Santa Barbara County, California. Santa Barbara, California: Santa Barbara Museum of Natural History. pp. 80. ISBN 0-936494-35-2. 
  4. Page, B.M., Marks, J.G., Walker, G.W. Stratigraphy and structure of mountains northeast of Santa Barbara, California. Bulletin of the American Association of Petroleum Geologists, Vol. 35 No. 8. 1951. p. 1749
  5. Thomas M. Dibblee, 1986. Geologic Map of the Santa Barbara Quadrangle, Santa Barbara County, California. California Department of Conservation, Division of Mines and Geology. Dibblee Foundation Map DF#06.
  6. Dibblee (1966) 20-21, 24
  7. Norris, 77-80
  8. Dibblee (1966) 21-24
  9. Norris, 77-81
  10. Deborah R. Harden. California Geology. Prentice Hall, 1997. ISBN:0-02-350042-5 p. 398
  11. Marilyn E. Tennyson and Caroline M. Isaacs, "Geologic setting and petroleum geology of Santa Maria and Santa Barbara Basins, Coastal California." In: Isaacs, Caroline M. and Rullkötter, Jürgen. The Monterey Formation: From Rocks to Molecules. Columbia University Press, 2001. ISBN:0-231-10585-1 p. 218.
  12. Minor, Scott A. "Geologic Map of the Reyes Peak Quadrangle, Ventura County, California." United States Geological Survey Open File Report 2004—1420. 2004.
  13. County of Santa Barbara. Paleontological Resources section from the Lompoc Wind Project Final Environmental Impact Report . 3.12-4 http://www.countyofsb.org/energy/projects/Wind/LompocFEIR/3.12-Paleontological.pdf
  14. Dibblee (1966) 22, 24
  15. James M. Galloway. "Santa Barbara-Ventura Basin Province." 112-114. http://www.boemre.gov/omm/pacific/production-development-resources/pdfs/sb-vb.pdf
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