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Title: Microlite orientation in obsidian flow measured by synchrotron X-ray diffraction

Abstract

Clinopyroxene and plagioclase (andesine) microlites in an obsidian flow from Glass Mountain (NE California, USA) display strong alignment. Synchrotron X-ray diffraction, coupled with Rietveld analysis, was used to quantify crystallographic-preferred orientation (CPO). Clinopyroxene, with a rod-shaped morphology, shows a strong alignment of [001] in the flow direction and (010) aligned parallel to the inferred flow plane. Andesine, with a platy morphology, displays an alignment of (010) platelets in the flow plane. Some pole densities exceed 90 multiples of random distribution. Applying a model of rigid ellipsoidal inclusions in a viscous matrix, the local pure shear strains are between 2 and 3.

Authors:
 [1];  [2]; ORCiD logo [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Earth and Planetary Science
  2. Univ. of California, Berkeley, CA (United States). Earth and Environmental Sciences Area
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
National Science Foundation (NSF)
OSTI Identifier:
1561893
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Contributions to Mineralogy and Petrology
Additional Journal Information:
Journal Volume: 173; Journal Issue: 7; Journal ID: ISSN 0010-7999
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Obsidian; Microlite alignment; Texture analysis; Crystal-preferred orientation; Strain estimates

Citation Formats

Manga, Michael, Voltolini, Marco, and Wenk, Hans-Rudolf. Microlite orientation in obsidian flow measured by synchrotron X-ray diffraction. United States: N. p., 2018. Web. doi:10.1007/s00410-018-1479-9.
Manga, Michael, Voltolini, Marco, & Wenk, Hans-Rudolf. Microlite orientation in obsidian flow measured by synchrotron X-ray diffraction. United States. doi:https://doi.org/10.1007/s00410-018-1479-9
Manga, Michael, Voltolini, Marco, and Wenk, Hans-Rudolf. Tue . "Microlite orientation in obsidian flow measured by synchrotron X-ray diffraction". United States. doi:https://doi.org/10.1007/s00410-018-1479-9. https://www.osti.gov/servlets/purl/1561893.
@article{osti_1561893,
title = {Microlite orientation in obsidian flow measured by synchrotron X-ray diffraction},
author = {Manga, Michael and Voltolini, Marco and Wenk, Hans-Rudolf},
abstractNote = {Clinopyroxene and plagioclase (andesine) microlites in an obsidian flow from Glass Mountain (NE California, USA) display strong alignment. Synchrotron X-ray diffraction, coupled with Rietveld analysis, was used to quantify crystallographic-preferred orientation (CPO). Clinopyroxene, with a rod-shaped morphology, shows a strong alignment of [001] in the flow direction and (010) aligned parallel to the inferred flow plane. Andesine, with a platy morphology, displays an alignment of (010) platelets in the flow plane. Some pole densities exceed 90 multiples of random distribution. Applying a model of rigid ellipsoidal inclusions in a viscous matrix, the local pure shear strains are between 2 and 3.},
doi = {10.1007/s00410-018-1479-9},
journal = {Contributions to Mineralogy and Petrology},
number = 7,
volume = 173,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Fig. 1 Fig. 1: Optical micrographs of obsidian in sample O1. Plane polarized light. a Structure with compositional layering (Os2a), b detail of layering with microlites, c microlites around an inclusion of magnetite, and d inclusion of plagioclase. In c, the curves show streamlines for pure shear around a spherical and rigidmore » inclusion« less

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Works referenced in this record:

Flow banding in obsidian: A record of evolving textural heterogeneity during magma deformation
journal, July 2005


The relationship of strain and preferred orientation of phyllosilicate grains in rocks—a review
journal, December 1983


Explosive volcanism may not be an inevitable consequence of magma fragmentation
journal, November 2003


The effect of hydrodynamic interactions on the orientation distribution in a fiber suspension subject to simple shear flow
journal, March 1995

  • Rahnama, Mani; Koch, Donald L.; Shaqfeh, Eric S. G.
  • Physics of Fluids, Vol. 7, Issue 3
  • DOI: 10.1063/1.868647

Repeated fracture and healing of silicic magma generate flow banding and earthquakes?
journal, January 2003

  • Tuffen, Hugh; Dingwell, Donald B.; Pinkerton, Harry
  • Geology, Vol. 31, Issue 12
  • DOI: 10.1130/G19777.1

Determining flow type, shear rate and shear stress in magmas from bubble shapes and orientations
journal, March 2003

  • Rust, A. C.; Manga, Michael; Cashman, K. V.
  • Journal of Volcanology and Geothermal Research, Vol. 122, Issue 1-2
  • DOI: 10.1016/S0377-0273(02)00487-0

Discriminating secondary from magmatic water in rhyolitic matrix-glass of volcanic pyroclasts using thermogravimetric analysis
journal, January 2015

  • Giachetti, Thomas; Gonnermann, Helge M.; Gardner, James E.
  • Geochimica et Cosmochimica Acta, Vol. 148
  • DOI: 10.1016/j.gca.2014.10.017

A comparative study of X-ray tomographic microscopy on shales at different synchrotron facilities: ALS, APS and SLS
journal, November 2012

  • Kanitpanyacharoen, Waruntorn; Parkinson, Dilworth Y.; De Carlo, Francesco
  • Journal of Synchrotron Radiation, Vol. 20, Issue 1
  • DOI: 10.1107/S0909049512044354

Orbital angular momentum microlaser
journal, July 2016


Formation of obsidian pyroclasts by sintering of ash particles in the volcanic conduit
journal, February 2017

  • Gardner, James E.; Llewellin, Edward W.; Watkins, James M.
  • Earth and Planetary Science Letters, Vol. 459
  • DOI: 10.1016/j.epsl.2016.11.037

Viscosity of magmatic liquids: A model
journal, July 2008

  • Giordano, Daniele; Russell, James K.; Dingwell, Donald B.
  • Earth and Planetary Science Letters, Vol. 271, Issue 1-4
  • DOI: 10.1016/j.epsl.2008.03.038

Quantitative Analysis of Silicate Glass in Ceramic Materials by the Rietveld Method
journal, April 1998


Nanotomography in the chemical, biological and materials sciences
journal, January 2007

  • Midgley, Paul A.; Ward, Edmund P. W.; Hungría, Ana B.
  • Chemical Society Reviews, Vol. 36, Issue 9
  • DOI: 10.1039/b701569k

Ascent and emplacement dynamics of obsidian lavas inferred from microlite textures
journal, September 2015

  • Befus, Kenneth S.; Manga, Michael; Gardner, James E.
  • Bulletin of Volcanology, Vol. 77, Issue 10
  • DOI: 10.1007/s00445-015-0971-6

Texture analysis of volcanic rock samples: Quantitative study of crystals and vesicles shape preferred orientation from X-ray microtomography data
journal, April 2011


Magmatic processes that generated the rhyolite of Glass Mountain, Medicine Lake volcano, N. California
journal, April 1997

  • Grove, Timothy L.; Donnelly-Nolan, Julie M.; Housh, Todd
  • Contributions to Mineralogy and Petrology, Vol. 127, Issue 3
  • DOI: 10.1007/s004100050276

Dynamics of obsidian flows inferred from microstructures: insights from microlite preferred orientations
journal, May 2002

  • Castro, Jonathan; Manga, Michael; Cashman, Katharine
  • Earth and Planetary Science Letters, Vol. 199, Issue 1-2
  • DOI: 10.1016/S0012-821X(02)00559-9

A technique for measuring 3D crystal-size distributions of prismatic microlites in obsidian
journal, August 2003

  • Castro, Jonathan M.; Cashman, Katharine V.; Manga, Michael
  • American Mineralogist, Vol. 88, Issue 8-9
  • DOI: 10.2138/am-2003-8-906

Transformations for monoclinic crystal symmetry in texture analysis
journal, June 2009


Constraints on rheology of obsidian lavas based on mesoscopic folds
journal, July 1999


Rietveld texture analysis from synchrotron diffraction images. I. Calibration and basic analysis
journal, January 2014


The effects of texture and extension twinning on the low-cycle fatigue behavior of a rolled magnesium alloy, AZ31B
journal, October 2010


Preferred mineral orientation of a chloritoid-bearing slate in relation to its magnetic fabric
journal, February 2015

  • Haerinck, Tom; Wenk, Hans-Rudolf; Debacker, Timothy N.
  • Journal of Structural Geology, Vol. 71
  • DOI: 10.1016/j.jsg.2014.09.013

Phase-contrast tomography at the nanoscale using hard x rays
journal, April 2010


The Rotation of Two Circular Cylinders in a Viscous Fluid
journal, May 1922

  • Jeffery, G. B.
  • Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 101, Issue 709
  • DOI: 10.1098/rspa.1922.0035

Rapid Crystallization of Plagioclase Phenocrysts in Silicic Melts during Fluid-saturated Ascent: Phase Equilibrium and Decompression Experiments
journal, May 2015

  • Waters, Laura E.; Andrews, Benjamin J.; Lange, Rebecca A.
  • Journal of Petrology, Vol. 56, Issue 5
  • DOI: 10.1093/petrology/egv025

Preferred orientation of phyllosilicates: Comparison of fault gouge, shale and schist
journal, April 2010

  • Wenk, Hans-Rudolf; Kanitpanyacharoen, Waruntorn; Voltolini, Marco
  • Journal of Structural Geology, Vol. 32, Issue 4
  • DOI: 10.1016/j.jsg.2010.02.003

BEARTEX: a Windows-based program system for quantitative texture analysis
journal, April 1998


Rietveld texture analysis from synchrotron diffraction images. II. Complex multiphase materials and diamond anvil cell experiments
journal, May 2014


Pre-eruptive storage conditions and eruption dynamics of a small rhyolite dome: Douglas Knob, Yellowstone volcanic field, USA
journal, February 2014

  • Befus, Kenneth S.; Zinke, Robert W.; Jordan, Jacob S.
  • Bulletin of Volcanology, Vol. 76, Issue 3
  • DOI: 10.1007/s00445-014-0808-8

Internal textures of rhyolite flows as revealed by research drilling
journal, January 1987


Paracrystalline Lattice Structure of Silica Glass, α- and β-Crystobalite
journal, August 1991

  • Hosemann, R.; Hindeleh, A. M.; Brückner, R.
  • Physica Status Solidi (a), Vol. 126, Issue 2
  • DOI: 10.1002/pssa.2211260203

Structural analysis of flow-related textures in lavas
journal, May 2002


Antigorite crystallographic preferred orientations in serpentinites from Japan
journal, March 2014


Orientation distribution of microlites in obsidian
journal, November 1998


Modelling the silica glass structure by the Rietveld method
journal, April 1995


Experiments on internal strain in lava dome cross sections
journal, June 2002


The strain path and kinematics of lava domes: An example from Lipari (Aeolian Islands, Southern Tyrrhenian Sea, Italy): KINEMATICS OF LAVA DOMES
journal, January 2004

  • Ventura, Guido
  • Journal of Geophysical Research: Solid Earth, Vol. 109, Issue B1
  • DOI: 10.1029/2003JB002740