Hi Thomas and family,

In my Pea-picking brain it would not be different.  I came to my conclusion 
after reading about the process of fracting: injecting fluids and chemicals 
into the ground to force gas or oil out of the rock, sand or soil.  It seems 
to me that these fluids passing through porous rock or shale, might not 
produce much stress or strain.  However, passing through sand or soil might 
rearrange its structure, and in doing so allow the rock structure above and 
around change its stresses and strains simply through gravity, if nothing 
else.

I cannot visualize such action not causing some sort of changes; thus 
creating the environment for a small earthquake: sudden release of strain 
and stress.

THAT is my simple unprofessional GUESS.  I get that from playing in the mud 
and water as a child and observing the soil saturating , crumbling and 
collapsing.  Said otherwise, my two bits worth.

Regards,
Jerry

--------------------------------------------------------------------------------


  ----- Original Message ----- 
  From: Thomas Dick
  To: psnlist@..............
  Sent: Saturday, November 20, 2010 8:30 AM
  Subject: Re: Guy and fracking


  My wife asked this question and I am not sure I know the answer,,,,could
  we be detecting a fracturing event or just an earthquake caused by the
  process?...in other words would the signature be different?
  __________________________________________________________

  Public Seismic Network Mailing List (PSNLIST)

  To leave this list email PSNLIST-REQUEST@.............. with
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Hi Thomas and family,
 
In my Pea-picking brain it would not be different.  I came to =
my=20
conclusion after reading about the process of fracting: injecting fluids =
and=20
chemicals into the ground to force gas or oil out of the rock, sand or=20
soil.  It seems to me that these fluids passing through porous rock =
or=20
shale, might not produce much stress or strain.  However, passing =
through=20
sand or soil might rearrange its structure, and in doing so allow the =
rock=20
structure above and around change its stresses and strains simply =
through=20
gravity, if nothing else.
 
I cannot visualize such action not causing some sort of changes; =
thus=20
creating the environment for a small earthquake: sudden release of =
strain and=20
stress.
 
THAT is my simple unprofessional GUESS.  I get that from =
playing in=20
the mud and water as a child and observing the soil saturating , =
crumbling and=20
collapsing.  Said otherwise, my two bits worth.
 
Regards,
Jerry



 

  
----- Original Message ----- 
  From:=20
  Thomas Dick 
  
To: psnlist@.............. =

  
Sent: Saturday, November 20, =
2010 8:30=20
  AM
  
Subject: Re: Guy and =
fracking
  

My wife asked this question and I am not sure I know =
the=20
  answer,,,,could 
we be detecting a fracturing event or just an =
earthquake=20
  caused by the 
process?...in other words would the signature be=20
  =
different?
__________________________________________________________<=
BR>
Public=20
  Seismic Network Mailing List (PSNLIST)

To leave this list email =
PSNLIST-REQUEST@SEISMICNET=
..COM=20
  with 
the body of the message (first line only): unsubscribe
See =
http://www.seismicnet.co=
m/maillist.html=20
  for more information.