[Geysers] Photograph of Black Diamond eruption (Stephens)

[Mike Keller]

The photos are quite nice, but hydrothermal explosion?  I think not-the
photo looks like the eruptions of Black Diamond I saw in 2007 and
2008-muddy, filled with sinter, rocks, and lots of silt.  My impression each
time I have seen it is that there isn't much of a plumbing system/geyser
vent that the eruption is coming from.  Does that constitute a hydrothermal
explosion versus an eruption?  I would say this is an eruption, especially
since the area has a history of doing it in the past 3 years, plus other
events in the early 1910's, 1920's, 1930's, 1940's, and 1950's.  I would
even dare to speculate that the source of energy that drove Black
Diamond/Wall Pool in these years moved to Sapphire Pool after the 1959
earthquake and is just now returning back to the Black Diamond area.

 

Maybe I am wrong, but my impression/definition of a hydrothermal explosion
is an area that has a large explosion or one time event, not a history of
eruptive activity.

 

MK

 

-----Original Message-----
From: geysers-bounces at lists.wallawalla.edu
[mailto:geysers-bounces at lists.wallawalla.edu] On Behalf Of Jack Ashe
Sent: Monday, May 25, 2009 8:14 AM
To: Geyser Observation Reports
Subject: Re: [Geysers] Photograph of Black Diamond eruption (Stephens)

 

Hydrothermal or not, that is the quesiton!

 

Isn't the assertion in the article that this was not a geyser eruption but
rather a hydrothermal explosion resulting in geologic effect similar to the
Pocket Basin explosion crater, Indian Pond or the Duck Lake events?

Was this NOT a true hydrothermal explosion but just a "messy" geyser
eruption? 

 

 If it is a hydrothermal explosion, I have been informed that these probably
result  from a sudden drop in water pressure over the thermal source. Did
that occur at Black Diamond??

 

Jack
 

 

  _____  

From: "TSBryan at aol.com" <TSBryan at aol.com>
To: geysers at lists.wallawalla.edu
Sent: Sunday, May 24, 2009 4:35:27 PM
Subject: Re: [Geysers] Photograph of Black Diamond eruption (Stephens)

Need I point out the errors in this article. I hope the source wasn't
in-park... but as we all know, Black Diamond has had quite a few
eruptions... and above all, the statement that there are no geysers at
Biscuit Basin......... Well ?

 

Scott Bryan

 

In a message dated 5/24/2009 12:56:37 AM Mountain Daylight Time,
david.schwarz at gmail.com writes:


There's another photo of the explosion in the Jackson Hole News, along with
a write-up:

 <http://www.jacksonholenews.com/article.php?art_id=4624>
http://www.jacksonholenews.com/article.php?art_id=4624

 

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