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Title: Preferred orientation in experimentally deformed stishovite: implications for deformation mechanisms

Although the crystal structure of the high pressure SiO 2 polymorph stishovite has been studied in detail, little is known about the development of crystallographic preferred orientation (CPO) during deformation in stishovite. Insight into CPO and associated deformation mechanics of stishovite would provide important information for understanding subduction of quartz-bearing crustal rocks into the mantle. To study CPO development, we converted a natural sample of flint to stishovite in a laser heated diamond anvil cell and compressed the stishovite aggregate up to 38 GPa. We collected diffraction patterns in radial geometry to examine in situ development of crystallographic preferred orientation and find that (001) poles preferentially align with the compression direction. Viscoplastic self-consistent modeling suggests the most likely slip systems at high pressure and ambient temperature are pyramidal and basal slip.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [4] ;  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Earth and Planetary Science
  2. Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources
  3. Chulalongkorn Univ., Bangkok (Thailand). Dept. of Geology
  4. Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical
Publication Date:
Grant/Contract Number:
NA0002006
Type:
Accepted Manuscript
Journal Name:
Physics and Chemistry of Minerals
Additional Journal Information:
Journal Volume: 42; Journal Issue: 4; Journal ID: ISSN 0342-1791
Publisher:
Springer
Research Org:
Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab.
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; stishovite; preferred orientation; diamond anvil cell; slip systems; high pressure/stress
OSTI Identifier:
1338331

Kaercher, Pamela M., Zepeda-Alarcon, Eloisa, Prakapenka, Vitali B., Kanitpanyacharoen, Waruntorn, Smith, Jesse S., Sinogeikin, Stanislav, and Wenk, Hans-Rudolf. Preferred orientation in experimentally deformed stishovite: implications for deformation mechanisms. United States: N. p., Web. doi:10.1007/s00269-014-0718-5.
Kaercher, Pamela M., Zepeda-Alarcon, Eloisa, Prakapenka, Vitali B., Kanitpanyacharoen, Waruntorn, Smith, Jesse S., Sinogeikin, Stanislav, & Wenk, Hans-Rudolf. Preferred orientation in experimentally deformed stishovite: implications for deformation mechanisms. United States. doi:10.1007/s00269-014-0718-5.
Kaercher, Pamela M., Zepeda-Alarcon, Eloisa, Prakapenka, Vitali B., Kanitpanyacharoen, Waruntorn, Smith, Jesse S., Sinogeikin, Stanislav, and Wenk, Hans-Rudolf. 2014. "Preferred orientation in experimentally deformed stishovite: implications for deformation mechanisms". United States. doi:10.1007/s00269-014-0718-5. https://www.osti.gov/servlets/purl/1338331.
@article{osti_1338331,
title = {Preferred orientation in experimentally deformed stishovite: implications for deformation mechanisms},
author = {Kaercher, Pamela M. and Zepeda-Alarcon, Eloisa and Prakapenka, Vitali B. and Kanitpanyacharoen, Waruntorn and Smith, Jesse S. and Sinogeikin, Stanislav and Wenk, Hans-Rudolf},
abstractNote = {Although the crystal structure of the high pressure SiO2 polymorph stishovite has been studied in detail, little is known about the development of crystallographic preferred orientation (CPO) during deformation in stishovite. Insight into CPO and associated deformation mechanics of stishovite would provide important information for understanding subduction of quartz-bearing crustal rocks into the mantle. To study CPO development, we converted a natural sample of flint to stishovite in a laser heated diamond anvil cell and compressed the stishovite aggregate up to 38 GPa. We collected diffraction patterns in radial geometry to examine in situ development of crystallographic preferred orientation and find that (001) poles preferentially align with the compression direction. Viscoplastic self-consistent modeling suggests the most likely slip systems at high pressure and ambient temperature are pyramidal and basal slip.},
doi = {10.1007/s00269-014-0718-5},
journal = {Physics and Chemistry of Minerals},
number = 4,
volume = 42,
place = {United States},
year = {2014},
month = {11}
}