Geothermal Exploration in Long Valley Caldera · Topographic Caldera Margin Resurgent Dome CP-I O...
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Long Valley Forum May 2011 Geothermal Exploration in Long Valley Caldera
Transcript of Geothermal Exploration in Long Valley Caldera · Topographic Caldera Margin Resurgent Dome CP-I O...
Long Valley Forum
May 2011
Geothermal Exploration
in
Long Valley Caldera
Heat Source
Geothermal System Requirements
Fluid
From USGS
S N
West
East
Lessons learned:
•Context
oExtreme variability
oLimited resource models
•Goals (what are you testing?)
oAnomalies
oGeologic concepts
•Context dictates methodology
•Target
o Upflow
oPermeability control(s)
•Phased exploration
oGeology
oGeochemistry
oGeophysics
oGeothermics
Shallow/Intermediate/Deep
After Farrar et al, 2003
After Sorey et al, 1991
0
100
200
300
400
500
600
0 100 200 300
Temperature (oC)
Dep
th (
m)
Quartz-Hosted
Fluid Inclusions
Boiling Point
Depth Curve
Temperatures
from Clay
Minerals
Boiling Point
post Bishop Tuff
BC 12-31
Temperature
Survey
Basalt Canyon 12-31
60m
384m
438m
490m
Qtill
Qtill
Qab
Qer
Qbt
Pz ms
TD- 610m
Long Valley Caldera
South Moat Wells
500
1000
1500
2000
2500
0 50 100 150 200 250
Ele
va
tio
n (
m a
bo
ve
me
an
se
ale
ve
l)
Temperature (oC)
Shady Rest-1
BC 12-31
Mammoth-1
57-25
