Salt Springs, Sierra Nevada - October 2022

[buckland]

One of my all time favorite books (same author as Cod ..another great little book).
In my village (Shelburne Falls). There is the Deerfield river. "Salmon Falls" was the first name. A Treaty area between the Mohawks and Penobscotts for fishing. The falls is also filled with glacial potholes that look a lot like the salt holes.

https://www.tripadvisor.com/Attraction_Review-g41809-d108732-Reviews-Glacial_Potholes-Shelburne_Falls_Massachusetts.html

 

[Casa Escarlata Robles Too]

Monte thanks for your sleuthing out the springs.
And for sharing with us all.
Frank

 

[Foy]

EDIT:

Well, the cut-copy attempt to attach a URL keeps disappearing from the text of my post. Perhaps someone with more chops than me (and that includes most anybody on earth) can do a better job of displaying the YT video.


The linked YouTube video titled Southern California Geology--Mafic Enclaves from "Geologically Speaking" includes lots of video of dark colored mafic inclusions within a mass of lighter colored (felsic) intrusive granitic rock. The exposures shown are way southeast of the Salt Springs intrusions but there are similarities in appearance. I had SWAG-ged that the xenoliths (inclusions) were wall rock fragments picked up by the intruding granitic magma but the geologist narrating the attached video refers to a process of a more mafic magma mixing in with a felsic magma to leave mafic "enclaves" (I'm too old to have used that term for the xenoliths).

A very brief search for geologic maps and/or related publications for the Salt Springs area did not turn up any professional writings about the nature of the xenoliths, but now I'm wondering if a magma mixing process may have formed the rocks seen near the reservoir.

Foy

 

[AWG_Pics]

I had SWAG-ged that the xenoliths (inclusions) were wall rock fragments picked up by the intruding granitic magma but the geologist narrating the attached video refers to a process of a more mafic magma mixing in with a felsic magma to leave mafic "enclaves" (I'm too old to have used that term for the xenoliths).

Well Foy, one geologist's mafic enclave is another geologist's xenolith (a term I am more comfortable with).

 

[longhorn1]

From airplane beacon towers, to crash sites, to Native American petroglyphs, the history is amazing. I have never heard of the salt basin. We enjoyed the ride along. Thanks for sharing.