Thermometers and Thermobarometers in Granitic Systems

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• Thermometers and Thermobarometers in Granitic
  Systems
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• J. Lawford Anderson
• Department of Earth Sciences, University of
  Southern California, Los Angeles, CA 90089-0740
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• Andrew P. Barth
• Department of Geosciences, Indiana
  University-Purdue University Indianapolis, IN
  46202
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• Joseph L. Wooden
• U.S. Geological Survey, 345 Middlefield Road,
  Menlo Park, CA 94205
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• Frank Mazdab
• U.S. Geological Survey, 345 Middlefield Road,
  Menlo Park, CA 94205

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Probing the Depth of Batholiths
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Evidence for Deep Emplacement
Aluminous hornblende
aluminous hornblende
calcic garnet
low REE epidote
Si-rich muscovite
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Cordilleran Batholiths
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Some companions on my fun journeys
Andy Barth
Scott Paterson
Greg Davis
Steve Clarke, Ed Young, Dennis ONeil, Sue Orrell
Jean Morrison
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Thermobarometers Require Accurate T
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SINGLE MINERAL TRACE ELEMENT THERMOMETERS IN
IGNEOUS SYSTEMS

• Ti-in-quartz
• Wark and Watson (2006) Wark et al. 2007 Wiebe
  et al. (2007)
• Ti-in-zircon
• Watson et al. (2006) Ferry and Watson (2007)
  Ferriss et al. (2008)
• Zr-in-rutile
• Watson et al. (2006)
• Zr-in-sphene
• Watson et al. (2006) Hayden et al. (2007)

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Blue granodiorite, Joshua Tree
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Palms granite, Joshua Tree
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Blue granodiorite
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Archean
Archean
Jurassic
Blue granodiorite
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Accessory Phase Saturation
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Whipple View
Whipple Mountains Metamorphic Core Complex, CA
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Core Complex Tracks
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San Gabriel Terrane
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Mojave P-T
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Post-emplacement fluids and pluton
thermobarometry Mt. Stuart batholith,
Washington Cascadeswith Jean Morrison, Julie
Francis, and Scott Paterson
In collaboration with Jenny Matzel, Donna
Whitney, Bob Miller, John Bendixonand Nugget!
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Mt. Stuart Batholith, WA
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MS oxygen Zonation
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Mineral Oxygen Isotopic Composition
Increasing ? (Qtz-Plag, Qtz-Hbld), which
corresponds to lower T, increases with Whole Rock
?18O, all of which occur on the batholith margin.
Quartz, usually resistant to change, also
increases.
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Two Thermometers - Elemental Oxygen Isotope
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Upper Crustal Overturn during Magmatic Surges - A
Potential Sierra Wide Process
Scott Paterson and Lawford Anderson our two
recent summer excursions and year-long research
with undergraduates University of Southern
California
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Our 2006 Team - 5 Undergraduates
21 miles on the first day!
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Nicole on Outcrop
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Brad
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Cretaceous Batholiths
High Flux Mesozoic Arc
Kistler Fleck (1994), modified by J. Miller
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Northern Tuolumne Area
Cinko Lake pendant
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Our students geologic map and new ages
Fremont Lake granodiorite lt 95 Ma
95 0.2 Ma
LVP
107.8 Ma
V
103.5 Ma
G
MS
148 Ma
V
102 0.2 Ma
Harriet Lake granodiorite
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Harriet Lake U-Pb Age
Foley, et al., 2007, GSA Cordilleran Meeting
abstract
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Fremont Lake Granodiorite
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Enclave Dike
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Clast-rich Metavolcanics
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Lineation on Metavolcanics
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Harriet Lineation at Contact
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Lineations
Harriet Lake
Metavolcanics
Fremont Lake
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Fremont Lake Hornblende
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Cinko Hornblende Al vs Ti
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Metavolcanic Textures
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Metavolcanic Textures
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Cinko PT
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2006-7 Team Meeting Presentations Undergrads in
bold!
Foley, B. J., Ball, E. N., Fischer, G.C.,
Thompson, J.M., Memeti, V., Pignotta, G.S.,
Anderson, J.L., Paterson, S.R., Matzel, J.,
Mundil, R. (2007) Downward ductile displacement
of volcanic crust during pluton emplacement in
the central Sierra Nevada Undergraduate Team
Research at USC Geological Society of America
Abstracts with Programs Bellingham. Thompson,
J.M., Ball, E. N., Fischer, G.C., Foley, B. J.,
Memeti, V., Pignotta, G.S., Paterson, S.R.,
Anderson, J.L., Matzel, J., Mundil, R. (2007)
Searching for the Mojave-Snow Lake Fault
Undergraduate Team Research at USC Geological
Society of America Abstracts with Programs
Bellingham. Ball, E.N., Fischer, G.C., Foley,
B.R., Thompson, J., Memeti, V., Pignotta, G.S.,
Anderson, J.L., Paterson, S.R., Matzel, J.,
Mundil, R. (2007) Magmatic and volcanic plumbing
systems, crustal evolution, and the search for
the mysterious Mojave-Snow Lake fault 2006-07
Earth Sciences undergraduate team research in the
high Sierra. USC Undergraduate Research
Symposium Received 2d place award. Anderson,
J.L., Foley, B. J., Ball, E. N., Paterson, S.R.
Memeti, V., Pignotta, G.S. (2007) Upper crustal
overturn during magmatic surges a potential
Sierra-wide process Geological Society of
America Abstracts with Programs Denver Memeti,
V., Gehrels, G., Paterson, S., Thompson, J.,
2007, Miogeoclinal strata in high Sierra Nevada
pendants Detrital zircon ages reveal additional
evidence for a Cretaceous Mojave-Snow Lake
fault Geological Society of America Abstracts
with Programs Denver
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Our 2007-08 group
Funded by USC College, USC Provost, and NSF funds
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Ten undergrads in a larger Group of 17
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Part of our budget included pack horses to take
gear in and bring out rock sample
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Very learner centered - students teaching students
Half of the 10 students were not science majors
and equal number had no prior camping experience
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Solomon making detailed field measurements
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Sample documentation
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Our students found themselves in high places as
they scaled 12,000 peaks every day
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And they did crazy things, like swimming in an
ice cold tarn!
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More high places!
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And snow fun!
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Its all about our students!
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Their map and ages
2007-2008 undergraduate map of Soldier-Green
Lakes area plus new ages
Green Lakes pluton 165 Ma
175 Ma metasediments
Soldier Lake pluton 97 Ma
175-223 Ma metavolcanics
Stereonet of lineations measured in the field
Cathedral Peak 86 Ma
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Green Lake Granodiorite - 165 Ma
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Soldier Lake Pluton
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2007-8 Team Meeting Presentations - so far!
All abstracts are published!!
Wagner, R., Anderson, L., Cao, W., Gao, Y.,
Ikeda, T., Johanesen, K., Jacobs, R., Mai, J.,
Memeti, V., Padilla, A., Paterson, S., Seyum, S.,
Shimono, S., Thomas, T., Thompson, J., Zhang, T.
(2007), Geologic wonders of Yosemite at Two Miles
High an undergraduate, learner-centered, Team
Research program at the University of Southern
California AGU annual meeting San
Francisco. Ikeda, T., Jacobs, R., Mai, J,
Seyum, S., Shimono, T., Thompson, J., Wagner, B.,
Wenrong, C., Yuan, G. (2008) Examining coupled
tectonics and pluton emplacement in host rocks
along the northeastern margin of the Tuolumne
batholith, Sierra Nevada, California (all
student authored) Geological Society of America
Abstracts with Programs Las Vegas. Paterson,
S, Memeti, V., Anderson, J.L., Miller, R., Zak,
J., Jacobs, R., Seyum, S. Shimono, S., and
Wenrong, C. (2008) Transpression and Downward
Crustal Flow During the Cretaceous High Flux
Magmatic Event in the central High Sierra Nevada,
California Geological Society of America
Abstracts with Programs Las Vegas. Shimono, S,
Mai, J., Ikeda, T., Jacobs, R., Seyum, S.,
Matloob, J., , Memeti, V., Paterson, S.,
Anderson, J.L., Zhang, T. (2008) Field research
and outdoor education in the high Sierra Nevada
with Undergraduate Team research at USC
Geological Society of America Abstracts with
Programs Las Vegas. Ikeda, Tiffany1 Jacobs,
Rena1 Seyum, Solomon2 Thompson, Jeffrey1
Thomas, Trevor1 Mai, Judy1 Shimono, Sharla1
Wagner, Becky1 Matloop, Jasmine1 Wenrong, Cao3
and Yuan, Gao (2008) Examining the coupled
tectonics and pluton emplacement in host rocks
along the northeastern margin of the Tuolumne
Batholith, Sierra Nevada, California. USC
Undergraduate Research Symposium
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Green Lake Granodiorite - 165 Ma
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Soldier Lake Area P-T Estimates
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Soldier Lake Pluton - 97 Ma
with tourmaline-bearing dikes
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Sierran Paleo -pressures
Saleeby et. al, 2008
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More recent models
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Proterozoic Anorogenic Granite Perforation of
Continents Worldwide
Lawford Anderson and Jean Morrison
Ilmenite, magnetite, and peraluminous
Mesoproterozoic anorogenic granites of Laurentia
and Baltica.Litho (2005) v. 80, p. 45-60.
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Rapakivi Granite
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Laurentian A-type Granites
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Magmatic Epidote, San Isabel Granite, CO
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Oak Creek Batholith, CO
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Silver Plume Granite, CO
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Ilmenite with Biotite, Wolf River Granite
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Parker Dam Granite, CA
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Wolf River Granite, WI
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fO2, Six Orders of Magnitude!
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Zoned Hbld