Eastern Mojave Vegetation Forest Road 3S07, Mono County, California  
 

Tom Schweich  

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Literature Cited
 South from the Huntley Kaolinite Quarry.

Other articles: Antelope Springs Road at FR 3S07  

Junction: Antelope Springs Road

Literature Cited:
- Jessey, David R., 2009.
- Prenn, Neil, and Thomas Dyer, 2008.
- Reynolds, Robert E., and David R. Jessey, 2009.

Other articles: Maps 4 Apr 2009

Locations: Blue Chert Mine.  

Blue Chert Mine

Field Trip Stop 2-9, "Blue Chert Mine," of the 2009 Desert Symposium (Reynolds and Jessey, 2009).

This small hill appears to be the top of a fossil hot springs system. Numerous other small knolls occur throughout this area. Each hill represents the locus of a hot spring or fumarole. As hot water rises in the vent conduit and cools, it deposits microcrystalline silica along the walls of the fissure. This often seals the vent system, which remains dormant for decades until seismic activity reopens the fissures. When that happens, the trapped geothermal waters rise rapidly to the surface and flash to steam. The explosiveness of the erupting geyser often overcomes the tensile strength of the rock, shattering it and creating a breccia pipe. The rapid temperature drop deposits a silica sinter blanket around the vent opening.

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View of Blue Chert Mine
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Field Trip Day 2, Detail of Stops 5-10
  End of road near north side of Hot Creek.
 

Literature Cited

  A list of all literature cited by this web site can be found in the Bibliography.
  Jessey, David R. 2009. The Blue Chert Mine: an epithermal gold occurrence in the Long Valley Caldera, California. pp. in Reynolds, Robert E., and David R. Jessey. Landscape Evolution at an Active Plate Margin. The 2009 Desert Symposium Field Guide and Proceedings. Fullerton and Riverside, Ca: Desert Studies Consortium, California State University and LSA Associates, Inc., April 2009. {TAS}
  Prenn, Neil, and Thomas Dyer. 2008. Technical Report Preliminary Assessment Long Valley Project Mono County, California USA. Prepared for Vista Gold Corp.. Reno, Nevada: Mine Development Associates, January 9, 2008. {TAS-pdf}
  Reynolds, Robert E., and David R. Jessey. 2009. Landscape Evolution at an Active Plate Margin. The 2009 Desert Symposium Field Guide and Proceedings. Fullerton and Riverside, Ca: Desert Studies Consortium, California State University and LSA Associates, Inc., April 2009. {TAS}
If you have a question or a comment you may write to me at: tas4@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address.  


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Date and time this article was prepared: 3/21/2017 9:11:57 AM