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Age of Ebbetts Pass volcano

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Age of Ebbetts Pass volcano

Postby mokelumnekid » Tue Oct 15, 2013 2:08 am

A geology friend who has been working in the Ebbetts Pass area has identified Silver Peak and Raymond as part of what is called the Ebbetts Pass stratovolcano (think say, Mt. Rainier or Shasta). The age for that system has been determined to be about 4.5 million years old. Just thought folks here might find that of interest.



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Re: Age of Ebbetts Pass volcano

Postby RichardCullip » Tue Oct 15, 2013 10:21 am

Interesting. Where did the rest of it go?
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Re: Age of Ebbetts Pass volcano

Postby Vaca Russ » Tue Oct 15, 2013 10:47 am

RichardCullip wrote:Interesting. Where did the rest of it go?


Good question.

George,

Wouldn't Reynolds also be part of this "stratovolcano"?

Thanks,

-Russ
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Re: Age of Ebbetts Pass volcano

Postby mokelumnekid » Thu Oct 17, 2013 9:03 am

I'm guessing that the rest of it is sitting down in the central valley as part of the sediments. Volcanoes erode away very quickly. As far as Renolyds goes, god question. There are many deposits around there from various volcanic episodes and from what little info I got only Raymond could be directly correlated with Silver Pk. But when I hear back from the person who is doing the work I'll ask.

Thanks for your interest guys!
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Re: Age of Ebbetts Pass volcano

Postby rlown » Sat Oct 19, 2013 10:24 am

very cool, MK. Is there any papers posted on the topic yet that are accessible via google scholar? for free?
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Re: Age of Ebbetts Pass volcano

Postby k9mark » Sat Oct 19, 2013 1:40 pm

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Re: Age of Ebbetts Pass volcano

Postby austex » Sat Oct 19, 2013 2:28 pm

WOW I'm a geography major; and a 300 level (now I understand they are 3000 level) course I took (with a long w/e field trip) was the Geography of the Owens Valley. Some terminology is slightly Greek to me but interpretable. Nice.
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Re: Age of Ebbetts Pass volcano

Postby mokelumnekid » Sat Oct 26, 2013 3:59 pm

Thanks k9mark- these are helpful references we have posted about previously. I have more but I can't post them publicly, tho those things may be obtained at the library. I think the age dates are new and probably not in the Hagen dissertation.

The business for publishing science paid for by YOUR tax money is that we write the papers, prepare the figures, send it to an unpaid (academic) editor, who sends it to unpaid reviewers (our colleagues) for review. If accepted, we make revisions, and submit type-set ready manuscript. Often we have to pay "page charges."Then the publishing house charges libraries an obscene amount to have access to the research papers that we produced at taxpayer expense. These are copyrighted materials so I can't even post a paper that I wrote myself (though many do)!

Even the non-profit professional societies like Geological Society of America or American Geophysical Union abide by this model somewhat as a means of revenue generation, although they are not nearly as draconian as the private publishing houses which dominate the science, engineering and medicine fields. :soapbox:
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