[Geysers] RE: YNP spring depths

[TSBryan at aol.com]

Somewhere in this pile of stuff is that figure of 400 feet, in one or more  
reports, based on the depth of sedimentary valley fill. In the face of 
other  tasks, I'm not going to pore through things any more. However, at least I 
did  find this in Allen and Day: "In a bore-hole put down in 1929 by the 
Geophysical  Laboratory at a point near Old Faithful Inn, altered rhyolite 
gravels were found  immediately under the sinter and they continued downward 
for 220 feet." [This is  the drilling conducted by C. N. Fenner; the site is 
near Myriad Geyser, in the  Myriad Group.]
 
Scott Bryan
 
 
In a message dated 10/5/2009 5:40:27 P.M. US Mountain Standard Time,  
Jeff.Cross at wallawalla.edu writes:

Who  estimated the depth as 400 ft?

Jeff  Cross
jeff.cross at wallawalla.edu

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