Rudy Wenk joined the Department in 1967. His research is in crystallography, mineralogy, structural geology and rock deformation. Most recently (see research interests and publications), emphasis has been on understanding seismic anisotropy in the earth by investigating the development of preferred orientation under expreme conditions (temperature and pressure) with neutron diffraction, synchrotron x-rays and electron microscopy. The research is funded by NSF and DOE. He wrote an introductory mineralogy book, published by CambridgeUniversity Press.

1965 PhD in crystallography at the University of Zurich. 1967 Joined faculty at UC Berkeley.

Mineralogy-Crystallography. Microstructures in minerals developing during deformation and phase transformations. In the past much work has been dedicated to feldspars, carbonates and perovskites. More recently cement minerals have become a fascinating topic of analysis (with Paulo Monteiro, Civil Engineering).

Anisotropy-Texture Development. Presently research emphasis is on investigating the development of preferred orientation in rocks and man-made materials. Close collaborations with materials scientists have been most rewarding. The approach is to balance modelling with experiments to better understand the development of anisotropy in the deep Earth. With diamond anvil experiments (mainly done at ALS and APS) materials can not only be subjected to high pressure and temperature, but simultaneously they can be deformed and texture development can be observed in situ. Anisotropy changes during phase transformations (e.g.olivine transforming to spinel and perovskite in the mantle, bcc iron transforming to hcp iron, trigonal quartz transforming to hexagonal quartz) are fascinating new topics that become available for investigations with new instrumental techniques. A new research emphasis is on quantification of preferred orientation in shales with synchrotron X-ray diffraction, relevant to seismic prospecting.

Field Investigations. Though most complex, natural rocks provide a lot of insight into basic mechanisms as well as a larger context for detailed studies. Presently fieldwork concentrates on the EasternPeninsular Ranges in Southern California with magnificent mylonites and a huge zone of pseudotachylites that appear related to ancient seismic activity. He is starting projects to investigate effects of shock deformation on quartz at meteorite impact sites as well as similar features in samples from the San Andreas fault drill core (SAFOD). Other projects continue in the central Alps and Japan. Fieldwork also provides an outlet for Rudy Wenk's hobby interests in mountain climbing and mountaineering.

Facilities. Rudy Wenk is maintaining a comprehensive Texture Laboratory with instruments (pole figure goniometers, an EBSP scanning electron microscope) and software (BEARTEX)�and is principal investigator of the Los Alamos neutron time-of-flight University of California Materials Research Diffractometer project HIPPO (High Pressure Preferred Orientation) at LANSCE. Synchrotron X-rays play an increasing role in the quantification of microstructural features (ALS, APS and ESRF).

Support: The research is currently supported by NSF, DOE-BES and DOE (CDAC).

Current Graduate Students:

John Grimsich

Pamela Kaercher

Waruntorn (Jane) Kanitpanyacharoen

Eloisa Zepeda

Postdoctoral Researcher:

Roman Vasin

EPS 298. Directed Group Study for Graduates. Friday 2-4. EPS 39A. Spring 2014: There are three mandatory lectures Wednesdays 5:10-6pm in 325 McCone: January 22 (organizational meeting, attend also if you are on waiting list), January 29 and February 5(geology of California). There is a 4-day fieltrip to Yosemite in April with some strenuous hiking.

301. B. Buffett and H.-R. Wenk (2001). Texturing of the inner core by Maxwell stresses. Nature 413, 60-63.

302. H.-R. Wenk, L. Cont, Y. Xie, L. Lutterotti, L. Ratschbacher and J. Richardson (2001). Rietveld Texture Analysis of Dabie Shan Eclogite from TOF Neutron Diffraction Spectra. J. Appl. Cryst. 34,442-453. [ download PDF ]

303. D.J. Barber and H.-R. Wenk (2001). Slip and dislocation behavior in dolomite. Europ. J. Mineral. 13, 221-243.

304. P.J.M. Monteiro, K. Shomglin, H.-R. Wenk and N.P. Hasparyk(2001). Effect of aggregate deformation on the alkali-silica reaction. Am. Concr. Inst. 98, 179-183.

305. S. Matthies, S. Merkel, H.-R. Wenk, R.J. Hemley and H-K Mao(2001). Effects of texture on the determination of elasticity of polycrystalline e-iron from diffraction measurements. Earth Planet.Sci. Lett. 194, 201-212.

306. D.E. Solas, C.N. Tom, O. Engler and H.R. Wenk (2001). Deformation and recrystallisation of hexagonal metals. Modeling and experimental results for zinc. Acta Mater. 49, 3791-3801.

306. S. Merkel, H.-R. Wenk, J. Shu, G. Shen, P. Gillet, H.-K. Mao and R.J. Hemley (2002). Deformation of MgO aggregates at pressures of the lower mantle. J. Geophys. Res. 107(B11), 2271,doi:10.1029/2001JB000920. [ download PDF ]

307. D.K. Blackman, H.-R. Wenk and M.-J. Kendall (2002). Seismic anisotropy in the upper mantle: 1. Factors that affect mineral texture and effective elastic properties. Geochemistry, Geophysics, Geosystems3(9), 8601, doi:10.1029/2001GC000248. [ download PDF ]

308. H.-R. Wenk (2003). Texture and anisotropy (2002). In Plastic Deformation of Minerals and Rocks, S.-Y. Karato and H.-R. Wenk Eds. Reviews in Mineralogy and Geochemistry, Mineral. Soc. America, 291-329.

309. S. Merkel, H.-R. Wenk, J. Badro, J. Montagnac, P. Gillet, H.K. Mao and R.J. Hemley (2003). Deformation of (Mg0.9,Fe0.1)SiO3 perovskite aggregates up to 60 GPa. Earth Planet. Sci. Lett. 209, 351-360. [ download PDF ]

310. C. Meneghini, M.C. Dalconi, S. Nuzzo, S. Mobilio and R.H. Wenk(2003). Rietveld refinement on X-ray diffraction patterns of bioapatite in human foetal bones. Biophys. J. 84, 2021-2029. [ download PDF ]

311. R.A. Lebensohn, P.R. Dawson, H.-R. Wenk and H.M. Kern (2003). Heterogeneous deformation and texture development in halite: modelling with finite element and selfconsistent approaches, and experimental validation.Tectonophysics 370, 287-311. [ download PDF ]

312. Y. Xie, H.-R. Wenk and S. Matthies (2003). Plagioclase preferred orientation by TOF neutron diffraction and SEM-EBSD. Tectonophysics 370, 269-286. [ download PDF ]

313. H.-R. Wenk and S. Grigull (2003). Synchrotron texture analysis with area detectors. J. Appl. Cryst. 36, 1040-1049. [ download PDF ]

314. H.-R. Wenk, L. Lutterotti, S. Grigull, S. Vogel (2003). Texture analysis with the new HIPPO TOF diffractometer.Nucl. Instr. Methods A515, 575-588. [ download PDF ]

315. H.-R. Wenk, J. Pehl, D.J. Williams, "Texture Changes During theQuartz a-b Phase Transition Studied by Neutron Diffraction," LosAlamos National Laboratory Report LALP-03-041 (2003).

316. O. Nishikawa, K. Saiki, H.-R. Wenk (2003) Intra-granular strains and grain boundary morphologies of dynamically recrystallized quartz aggregates in a mylonite. J. Struct. Geol. 26, 127-141.

317. A. Puig Molina, H.-R. Wenk, F. Berberich and H. Graafsma (2003). Method for in situ texture investigation of recrystallization of Cu and Ti by high-energy synchrotron X-ray diffraction. Z. Metallk. 94,1199-1205.

318. K. Shomglin, L. Turanli, H.-R. Wenk, P.J.M. Monteiro and G.Sposito (2003). The effects of potassium and rubidium hydroxide on the alkali silica reaction. Cement and Concrete Research 33, 1825-1830.

319. H.-R. Wenk (2003). Texture and anisotropy in the deep earth. Part I Approach. Encyclopedia of Materials: Science and Technology  Updates. [ download PDF ]

320. H.-R. Wenk (2003). Texture and anisotropy in the deep earth. Part II Applications. Encyclopedia of Materials: Science and Technology Updates. [ download PDF ]

321. Y. Xie, L. Lutterotti, H.-R. Wenk and F. Kovacs (2004). Texture analysis of ancient coins with TOF neutron diffraction. J. Materials Science 39, 3329-3337.

322. Wenk, H.R., Lonardelli, I., Williams, D. (2003b). In situ texture analysis of the a-b transition in zirconium with neutron diffraction. Acta Mater. 52, 1899-1907. [ download PDF ]

323. J. Feinberg, H.-R. Wenk, P. Renne and G.R. Scott (2004). Epitaxial relationships of clinopyroxene-hosted magnetite determined using electron backscatter diffraction (EBSD) technique. Am. Mineral. 89,462-466.

324. Merkel, S., Wenk H.-R., Gillet P., Mao H.-K., Hemley R.J. (2004). Deformation of polycrystalline iron up to 30 GPa and 1000K. Phys. Earth Planet. Inter. 145, 239-251.

325. H.-R. Wenk, I. Lonardelli, J. Pehl, J. Devine, V. Prakapenka, G.Shen and H.-K. Mao (2004). In Situ observation of texture development in olivine, ringwoodite, magnesiow stite and silicate perovskite at high pressure. Earth Planet. Sci. Lett. 226, 507-519.[ download PDF ]

326. H.-R. Wenk and P. Van Houtte (2004). Texture and Anisotropy. Reports on Progress in Physics 67, 1367-1428.
[ download PDF ]

327. H.-R. Wenk, I. Lonardelli, J. Tullis and S. Vogel (2005). Dauphine twinning as evidence for an impact origin of preferred orientation in quartzite. An example from Vredefort, South Africa. Geology 33, 273-276.
[ download PDF ]

328. G. Ischia, H.-R. Wenk, L. Lutterotti and F. Berberich (2005).Quantitative Rietveld texture analysis from single synchrotron diffraction images. J. Appl. Cryst. 38, 377-380.
[ download PDF ]

329. I. Lonardelli, H.-R. Wenk, L. Lutterotti and M. Goodwin (2005).Texture analysis from synchrotron diffraction images with the Rietveld method: Dinosaur tendon and salmon scale. J. Synchr. Research 12, 354-360.
[ download PDF ]

330. J. Feinberg, G.R. Scott, P. Renne and H.-R. Wenk (2005). Exsolved magnetite inclusions in silicates: Features determining their remanence behavior. Geology 33, 513-516.
[ download PDF ]

331. S. Matthies, J. Pehl, H.-R. Wenk and S. Vogel (2005). Quantitative texture analysis with the HIPPO TOF diffractometer. J.Appl. Cryst. 38,462-475.
[ download PDF ]

332. D. A. Silva, H.-R. Wenk and P.J.M. Monteiro (2005). Comparative investigation of mortars from Roman Colosseum and cistern. Thermochimica Acta 438, 35-40.
[ download PDF ]

333. H.-R. Wenk, G. Ischia, N. Nishiyama, Y. Wang, and T. Uchida(2005). Texture development and deformation mechanisms in ringwoodite. Phys. Earth Planet. Int. 152, 191-199.
[ download PDF ]

334. J. Pehl and H.-R. Wenk (2005). Evidence for regional Dauphin� twinning in quartz from the Santa Rosa mylonite zone in SouthernCalifornia. A neutron diffraction study. J. Struct. Geol. 27, 1741-1749.
[ download PDF ]

335. J. Feinberg, H.-R. Wenk, G.R. Scott and P. Renne (2006). Preferred orietation and anisotropy of physical properties in gabbros from theBushveld complex. Tectonophysics 420, 345-356.

336. Zhiqin Xu, Qin Wang, Shaocheng Ji, Jing Chen, Lingsen Zeng,Jingsui Yang, Fangyuan Chen, Fenghua Liang and Hans-Rudolf Wenk (2006). Petrofabrics and seismic properties of garnet peridotite from the UHPSulu terrane (China): Implications for olivine deformation mechanism in a cold and dry subducting continental slab. Tectonophysics 421, 111-127.

337. S. Merkel, A. Kubo, L. Miyagi, S. Speziale, T.S. Duffy, H-k Mao and H.-R. Wenk (2006). Plastic deformation of MgGeO3 post-perovskite at lower mantle pressures. Science 311, 644-646.
[ download PDF ]

338. Tommaseo, C.E., Merkel, S., Speziale, S., Devine, J. and Wenk,H.-R. (2006). Texture development and deformation mechanisms in magnesiowuestite at high pressure. Phys. Chem. Minerals 33, 84-97. [ download PDF ]

340. Wenk, H.-R., Speziale, S., McNamara, A.K. and Garnero, E.J.(2006). Modeling anisotropy development in the lower mantle. EPSL 245, 302-314.
[ download PDF ]

342. Wenk, H.-R., Lonardelli, I., Merkel, Miyagi, L., Pehl, J., Speziale, S. and Tommaseo, C.E. (2006). Diamond anvil deformation experiments in radial diffraction geometry. J. Phys. Cond. Matter 18, S933-947.
[ download PDF ]

343. Miyagi, L., Merkel, S., Yagi, T., Sata N., Ohishi Y., Wenk, H.-R.(2006). Quantitative Rietveld texture analysis of CaSiO3 perovskite deformed in a diamond anvil cell. J. Phys. Cond. Matter 18, S995-1005.

344. Speziale, S., Lonardelli I., Miyagi, L., Pehl, J., Tommaseo, C.E.and Wenk, H.-R. (2006). Deformation experiments in the diamond-anvil cell: Texture in copper to 30 GPa. J. Phys. Cond. Matter 18, S1007-1020.

348. Wenk H-R, Lonardelli, I, Rybacki, E, Dresen G, Barton N, Franz H,Gonzalez G (2006). Dauphin twinning and texture memory in polycrystalline quartz. Part 1: Experimental deformation of novaculite. Phys. Chem. Minerals 33, 667-676.[ download PDF ]

339. N. Bozzolo, N. Dewobroto, H.R. Wenk, F. Wagner (2007). Microstructure and microtexture of highly cold-rolled commercially-pure titanium. J. Mater. Sci. 42, 2405-2416.[ download PDF ]

341. Wenk, H.-R., Huensche, I. and Kestens, L. (2007). In situ observation of texture changes in ultralow carbon steel. Mater. Trans. 30, 261-267.
[ download PDF ]

345. I. Lonardelli, H.-R. Wenk, Y. Ren (2007). Preferred orientation and elastic anisotropy in shales. Geophysics 72, D33-D40.[ download PDF ]

346. H.-R. Wenk, I. Lonardelli, H. Franz, K. Nihei and S. Nakagawa(2007). Texture analysis and elastic anisotropy of illite clay.Geophysics 72, E69-75.[ download PDF ]

347. Barber DJ, Wenk HR, Gomez-Barreiro J, Rybacki E, Dresen G (2007). Basal slip in calcite. Evidence from torsion experiments. Phys. Chem. Minerals 34, 73-34. [ download PDF ]

349. Lonardelli I, Gey N, Wenk H-R, Lutterotti, L., Vogel S, Humbert M(2007). In situ texture evolution during phase transformations in titanium alloys. Acta Mater. 55, 5718-5727 [ download PDF ]

350. M. Kunz, W.A. Caldwell, L. Miyagi and H.-R. Wenk (2007). In situ laser heating and radial synchrotron diffraction in a diamond anvil cell. Rev. Scient. Instrum. 78, 063907 [ download PDF ]

351. S. Merkel, A.K. McNamara, A. Kubo, S. Speziale, L. Miyagi, Y. Meng, T.S. Duffy and H.-R. Wenk (2007). Deformation of (Mg,Fe)SiO₃ post-perovskite and D anisotropy. Science 316, 1729-1732. [ download PDF ]

352. Wenk H-R, Bartolotti, M., Barton, N., Oliver, E. and Brown, D. (2007). Dauphin twinning and texture memory in polycrystalline quartz. Part 2: In situ neutron diffraction compression experiments. Phys. Chem. Minerals 34, 599-607.[ download PDF ]

353. N.R. Barton and H.-R. Wenk (2007). Dauphin twinning in polycrystalline quartz. Modelling Simul. Mater. Sci. Engin. 15, 369-384. [ download PDF ]

354. Gmez Barreiro J, Lonardelli I, Wenk H-R, Dresen G, Rybacki E, RenY, Tome CT (2007) Preferred orientation of anorthite deformed experimentally in Newtonian creep. EPSL 264, 188-207. [ download PDF ]

355. H.-R. Wenk, P. Monteiro and K. Shomglin (2007). Relationship between aggregate microstructure and concrete expansion. A case study of deformed granitic rocks from the Santa Rosa Mylonite Zone. J. Materials Science43:1278 1285 [ download PDF ]

356. H.-R. Wenk, M. Voltolini, M. Mazurek, L.R. Van Loon and A. Vinsot (2008). Preferred orientations and anisotropy in shales: Callovo-Oxfordian shale (France) and Opalinus Clay (Switzerland). Clays and Clay Minerals 56, 285-306. [ download PDF ]

 357. H.-R. Wenk, L. Lutterotti and M. Bortolotti (2008). Neutron texture analysis with HIPPO at your fingertips, Research Highlights. Los Alamos National Laboratory Report LA-(in press). [ download PDF ]

358. L. Miyagi, N. Nishiyama, Y. Wang, A. Kubo, D. V. West, R. J. Cava, T. S. Duffy, H.R. Wenk (2008).Deformation and texture development in CaIrO₃ post-perovskite phase up to 6 GPa and 1300 K. EPSL 268, 515-525. [ download PDF ]

359. L. Miyagi, S. Merkel,, T. Yagi, N. Sata, Y. Ohishi, H.-R. Wenk (2008). Diamond anvil cell deformation of CaSiO₃perovskite up to 49 GPa. PEPI (in press).

360. H.-R. Wenk, Voltolini, M., Kern, H., Popp, H. and Mazurek, M. (2008). Anisotropy of Mont Terri Opalinus Clay.The Leading Edge 27, 742-748. [ download PDF ]

361. S. Speziale, F. Jiang, Z. Mao, P. J.M. Monteiro, H.-R. Wenk, T. S. Duffy, F. Schilling (2008). Single-crystal elastic constants of natural ettringite. Cement and Concrete Research 38, 885-889. [ download PDF ]

362. S. Speziale, H.J. Reichmann, F.R. Schilling, H.R. Wenk, P.J.M. Monteiro (2008). Determination of the elastic constants of portlandite by Brillouin spectroscopy. Cement and Concrete Research 38, 1148-1153.

363. W. L. Mao, V. V. Struzhkin, A. Q. R. Baron, S. Tsutsui, C. E. Tommaseo, H-R. Wenk, P. Chow, M. Hu, J. Shu, R. J. Hemley, and H-k. Mao (2008). Experimental determination of elasticity of iron at high pressure, J. Geophys. Res. 113, B09213, doi:10.1029/2007JB005229. [ download PDF ]

364. L. Miyagi, M. Kunz, J. Nasiatka, M. Voltolini, J. Knight, H.-R. Wenk (2008). In-situ study of texture development in polycrystalline iron during phase transformations and deformation at high pressure and temperature. J. Appl. Phys.104, 103510. [ download PDF ]

365. M. Voltolini, H.-R. Wenk, Mondol, N.H., Bjrlykke, K. and Jahren J. (2009) Anisotropy of experimentally compressed kaolinite-illite-quartz mixtures. Geophysics 74, D13-D23. [ download PDF ]

366. S. Merkel, C. Tome and H.-R. Wenk (2009). A modeling analysis of the influence of plasticity on high pressure deformation of hcp-Co. Phys. Rev. B79. [ download PDF ]

367. D.J. Barber, H.-R. Wenk, G. Hirth and D. Kohlstedt (2009). Dislocations in minerals. Chapter 96 of Dislocations in Solids, Vol. 16 J. Hirth and L. Kubin Eds. Elsevier, Amsterdam p171-232. [ download PDF ]

368. H.-R. Wenk, M. Armann, L. Burlini, K. Kunze and M. Bortolotti (2009). Large strain shearing of halite: Experimental and theoretical evidence for dynamic texture changes. EPSL 280, 205-210. [ download PDF ]

369. M. Kunz, K. Chen, N. Tamura, H.-R. Wenk (2009). Residual stress and domain orientation in natural quartz. American Mineralogist 94, 1059-1062.  [ download PDF ]

370. Wenk H-R, Barton N, Bortolotti M, Vogel S, Voltolini M, Lloyd G, Gonzalez G (2009). Dauphiné twinning and texture memory in polycrystalline quartz. Part 3. Texture memory during phase transformation. Phys. Chem. Minerals 37, 567-583.  [ download PDF ]

371. Lin J.-F., Wenk H.-R., Voltolini, M., Speziale S., Shu J. and Duffy T. (2009). Deformation of lower mantle ferropericlase (Mg,Fe)O across the electronic spin transition. Phys. Chem. Minerals 37, 585-592.  [ download PDF ]

372. Monteiro P.J.M., Kirchheim A.P, Chae S., Fischer P., MacDowell A.A., Schaible E. and Wenk H.-R. (2009). Characterizing the nano and micro structure of concrete to improve its durability.Cement and Concrete Composites 31, 577-584.  [ download PDF ]

373. Wenk H.-R., Monteiro P.J.M., Kunz M., Chen K., Tamura N., Lutterotti L. and Dell Arroz J. (2009). Preferred orientation of ettringite in concrete fractures. J. Appl. Cryst. 42, 429-432.  [ download PDF ]

374. Matthies S. and Wenk H.-R (2009). Transformations for monoclinic crystal symmetry in texture analysis. J. Appl. Cryst. 42, 564-571.  [ download PDF ]

375. H.-P. Liermann, S. Merkel, L. Miyagi, H.-R.Wenk, G. Shen, H. Cynn, W. J. Evans (2009).Experimental method for in situ determination of material textures at simultaneous high-pressure and high temperature by means of radial diffraction in the diamond anvil cell. Rev. Scient. Instrum. 80, 104501, 1-8.  [ download PDF ]

376. Lutterotti L., Voltolini M., Wenk H.-R., Bandyopadhyay K., Vanorio T. (2010). Texture analysis of turbostratically disordered Ca-montmorillonite. Amer. Mineral. 95, 98-103.  [ download PDF ]

377. Gomez Barreiro J., Ramon Martinez J., Prior D., Wenk H.-R., Vogel S., Diaz Garcia F., Arenas R., Sanchez Martinez R., Lonardelli I. (2010). Fabric development in a Middle Devonian intra-oceanic subduction regime: The Careon ophiolite (NW Spain). J. Geology118, 163-186.[ download PDF ]

378. Janssen C., Wirth R., Rybacki E., Naumann R., Kemnitz H., Wenk H.-R., Dresen R. (2010). Amorphous material in SAFOD core samples (San Andreas Fault): Evidence for for crush-origin pseudotachylites? Geophysical Research Lett. 37, doi:10.1029/2009GL04993.

379. Skinner L. B., Chae S. R., Benmore C. J., Wenk H. R., Monteiro P. J. M.,  (2010). Nanostructure of calcium-silicate-hydrates in cements. Phys. Rev. Letters 104, 195502. [ download PDF ]

380. Wenk H.-R., Kanitpanyacharoen W, Voltolini M. (2010). Preferred orientations of phyllosilicates: Comparison of fault gouge, shale and schist. J. Struct. Geol. 32, 478-481. [ download PDF ]

381. Wenk H.-R., Lutterotti L., Vogel S.C. (2010). Rietveld texture analysis from TOF neutron diffraction data. Powder Diffraction 25, 283-296. [ download PDF ]

382. Wenk H.-R. (2010). Texture analysis by advanced diffraction methods. Chapter 8 in E.J. Mittemeijer and U. Welzel Eds. Modern Diffraction Methods. Wiley-VCH, in press.

383. Miyagi L., Kanitpanyacharoen W., Kaercher P., Lee K.K.M., Wenk H.R. (2010). Slip systems in MgSiO3 post-perovskite: Implications for D" anisotropy. Science 329, 1639-1641. [ download PDF ]

384. Godwal B.K., Speziale S., Voltolini M., Wenk R., and Jeanloz R. (2010). Postcotunnite phase of the intermetallic compound AuIn2 at high pressure. Phys. Rev. B 82 064112

388. Wu, L., Agnew S.R., Ren Y., Brown D.W., Clausen B., Stoica G.M., Wenk, H.R., Liaw, P.K. (2010). The effects od texture and extension twinning on the low-cycle fatigue behavior of a rolled magnesium alloy, AZ31B. Mater. Sci. Engin. A 527, 7057-7067.

389. Militzer B., Wenk H.-R., Stackhouse S., Stixrude L. (2011). First principles calculation of the elastic properties of clay minerals and their application to shale anisotropy. American Mineralogist 96, 125-137. [download PDF ]

390. Kanitpanyacharoen W., Wenk H.-R., Kets F., Lehr B.C. and Wirth R. (2011). Texture and anisotropy analysis of Qusaiba shales. Geophysical Prospecting 59, 536-556. [download PDF ]

391. Chen, K., Kunz, M., Tamura, N., Wenk, H.-R. (2011). Evidence for high stress in quartz from the impact site of Vredefort, South Africa. European J. Mineral. 23, 169-178. [download PDF ]

392. Chen K., Kunz M., Tamura N., and Wenk H.-R. (2011). Deformation twinning and residual stress in calcite studied with synchrotron polychromatic x-ray microdiffraction. Phys. Chem. Minerals 38, 491-500. [download PDF ]

393. Wenk, H.-R., Chen, K. and Smith R. (2011). Morphology and microstructure of magnetite and ilmenite inclusions in plagioclase from Adirondack anorthositic gneiss. American Mineralogist 96, 1316-1324.[download PDF ]

394. Miyagi L. W. Kanitpanyacharoen, S. Stackhouse, B. Militzer, and H.-R. Wenk (2011). The effect of grain size on Deformation and texture development in MgGeO₃ post-perovskite. Phys. Chem. Minerals 38,665-678. [download PDF ]

395. Wenk H.R., Cottaar S., Tome C., McNamara A. and Romanowicz B. (2011). Deformation in the lowermost mantle: From polycrystal plasticity to seismic anisotropy. EPSL 306, 33-45. [download PDF ]

396. Janssen, C., Wirth, R., Reinicke, A., Rybacki, E., Naumann, R., Wenk, H.-R. and Dresen, G. (2011). Nanoscale porosity in SAFOD core samples (San Andreas Fault). EPSL 301, 179-189.[download PDF ]

397. Rybacki, E., Janssen, C., Wirth, R., Chen, K., Wenk H.R., Stromeyer, D. and Dresen G. (2011) Low-temperature deformation in calcite veins of SAFOD core samples (San Andreas fault) – microstructural analysis and implications for fault rheology. Tectonophysics 509, 107-119.[download PDF ]

398. Wenk H.-R., Janssen, C., Kenkmann T. and G. Dresen G. (2011) Mechanical twinning in quartz: shock experiments, impact, pseudotachylites and fault breccias. Tectonophysics 510, 69-79.[download PDF ]

399. Buatier M.D., Chauvet A., Kanitpanyacharoen W., Wenk R., Ritz J.F. and Jolivet M. (2012). Origin and behavior of clay minerals in the Bogd fault gouge, Mongolia. J. Struct. Geol. 34, 77-90.[download PDF ]

400. Kanitpanyacharoen W., Kaercher P., Merkel S., Miyagi L., Tome, C., Wang, Y., Wenk H.-R. (2011). Deformation of hexagonal metals at high pressure. Acta Mater. 60, 430-442.[download PDF ]

401. Marquardt, H., Gleason, A., Marquardt, K., Speziale, S., Miyagi, L., Neusser, G., Wenk, H.-R. and Jeanloz, R. (2011). Elastic properties of MgO nanocrystals and grain boundaries at high pressures by Brillouin scattering. Phys. Rev. B 84, 064131.

402. Voltolini, M., Wenk, H.-R., Gomez Barreiro, J. and Agarwal, S.C. (2011). Hydroxylapatite lattice preferred orientation in bone: a study of macaque, human and bovine samples. J. Appl Cryst. 44, 928-934.

403. Mazzoleni, G., Maurizio, R. and Wenk, H.-R. (2011). Itinerario No11: La via dei graniti, p. 184-199 in Mario Panozza (edt): Un’Escursione Nello Spazio E Nel Tempo. Via GeoAlpina, Itinerari Italiani.

404. Kanitpanyacharoen W., Kets, F.B., Wenk H.-R. and Wirth R. (2012). Preferred orientation, microstructures and porosity analyses of Posidonia shales. Clays and Clay Minerals 60, 315-329.[download PDF ]

405. Battocchio F., Monteiro P., Wenk H.-R. (2012) Rietveld refinement of the structures of 1.0 C-S-H and 1.5 C-S-H. Cement and Concrete Research 42, 1534-1548 [download PDF ]

406. Soyer-Uzun S., Chae R., Benmore C.J., Wenk H.-R., Monteiro P.J.M. (2012). Investigation of compositional evolution of structure of calcium silicate hydrate (C-S-H) by total X-ray scattering. J. Amer. Ceram Soc. (in press)

407. Oh, J.E., Clark, S.M., Wenk, H.-R. and Monteiro, P.J.M. (2012). Experimental determination of bulk modulus of 14A tobermorite using high pressure synchrotron X-ray diffraction. Cement and Concrete Research 95, 793-798

408. Monteiro, P.J.M., Clodic, L., Battocchio, F., Kanitpanyacharoen, W., Chae, S.R., Ha, J., and Wenk, H.-R. (2011). Incorporating carbon sequestration materials in civil infrastructure: A micro- and nano-structural analysis. Cement and Concrete Composites 40, 14-20

409. Wenk, H.-R., Vasin, R.N., Kern, H., Matthies, S., Vogel, S.C., Ivankina, T.I. (2012) Revisiting elastic anisotropy of biotite gneiss from the Outokumpu scientific drill hole based on new texture measurements and texture-based velocity calculations. Tectonophysics, 570-571, 123-134. [download PDF ]

410. Wenk H.-R. (2012). Application of neutron scattering in earth sciences. Journal of Materials 64, 127-137.[download PDF ]

411. Wenk H.-R. (2012). Texture analysis by advanced diffraction methods. Chapter 7 in E.J. Mittemeijer and U. Welzel Eds. Modern Diffraction Methods. Wiley-VCH p173-220.

412. Chen, Kai, Dejoie, C. and Wenk, H.-R. (2012). Unambiguous indexing of trigonal crystals from white beam Laue diffraction patterns: Application to Dauphine twinning and lattice stress mapping in deformed quartz. J. Appl. Cryst 45, 1-8

413. Kanitpanyacharoen W., Parkinson, D.Y., de Carlo, F., Marone, F., Wenk, H.-R., MacDowell, A., Mokso, R., and Stampanoni, M. (2013). A comparative study of X-ray microtomography on shales at different synchrotron facilities: ALS, APS and SLS. J. Synchrotron Radiation 20, 1-9 [download PDF ]

414. Kaercher P., Speziale S., Miyagi L., Kanitpanyacharoen W., Wenk H.-R. (2012). Crystallographic preferred orientation in wuestite (FeO) through the cubic-to-rhombohedral phase transition. Phys. Chem. Minerals 39, 613-626 [download PDF ] 412. Janssen, C., Kanitpanyacharoen, W., Wenk, H.-R., Wirth, R., Morales, L., Rybacki, E., Kienast, M., Dresen, G. (2012). Clay fabrics in SAFOD core samples. J. Struct. Geol. 43, 118-127. [download PDF ]

416. Chen, B., Lutker, K., Raju, S.V., Yan, J., Kanitpanyacharoen, W., Lei, J., Yang, S., Wenk, H.-R., Mao, H-k., Williams, Q. (2012). Texture of nanocrystalline nickel: Probing the lower size limit of dislocation activity. Science 338, 1448-1451. [download PDF ]

 417. Miyagi, L., Kanitpanyacharoen, W., Raju, V., Kaercher, P., Knight, J., McDowell, A., Wenk, H.R., Williams, Q., Zepeda, E. (2013). Combined resistive and laser heating technique for in situ radial X-ray diffraction in the diamond anvil cell at high pressure experiments and temperature. Rev. Sci. Instr. 84, 025118 1-9.[download PDF ]

417. Merkel, S., Liermann, H.P., Miyagi, L., Wenk, H.-R. (2013). In-situ radial x-ray diffraction study of texture and stress during phase transformations in bcc-, fcc-, and hcp-iron up to 36 GPa and 1000K. Acta mater. 61, 5144

418. Jackson, M.D., Moon, J., Gotti, E., Taylor, R., Chae, S.R., Kunz, M., Emwas, A.H., Meral, C., Guttmann, P., Levitz, P., Wenk, H.-R., Monteiro, P.J.M. (2013). Material and elastic properties of Al-tobermorite in ancient Roman seawater concrete. J. Am. Ceram. Soc. 1-9; DOI:10.1111/jace.12407

419. Vasin, R., Wenk, H.-R., Kanitpanyacharoen, W., Matthies, S., Wirth, R. (2013). Anisotropy of Kimmeridge shale. J. Geophys. Res. 118,1-26, doi:10.1002/jgrb.50259.[download PDF ]

420. Monteiro, P.J.M., Clodic, L., Battocchio, F., Kanitpanyacharoen, W., Chae, S.R., Ha, J., and Wenk, H.-R. (2013). Incorporating carbon sequestration materials in civil infrastructure: A micro- and nano-structural analysis. Cement and Concrete Composites 40, 14-20.
[download PDF ]

421. Wenk, H.-R., Kaercher, P., Kanitpanyacharoen, W., Zepeda-Alacon, E. and Wang, Y. (2013). Orientation relations during the a-w phase transition of zirconium - in situ texture observations at high pressure and temperature. Physics Review Letters 111, 195701, doi:10.1103/PhysRevLett.111.195701.                                                                                                                                                    

421. Lutterotti, L., Vasin, R., Wenk, H.-R.  (2013). Rietveld texture analysis from synchrotron diffraction images: I. Basic analysis. Powder Diffraction Powder Diffraction 29, 76-84. [download PDF ]

422. Wenk, H.-R., Lutterotti, L., Kaercher, P., Kanitpanyacharoen, W., Miyagi, L., Vasin, R. (2013). Rietveld texture analysis from synchrotron diffraction images: II. Complex multiphase materials and diamond anvil cell experiments. Powder Diffraction (in press)

423. Soda, Y. and Wenk, H.-R. (2013). Antigorite preferred orientations in serpentinites from Japan. Tectonophysics 615-616, 199-212.
[download PDF ]

429. Janssen, C., Wirth, R., Wenk, H.-R., Morales, L., Naumann, R., Kienast, M., Song, S.R., Dresen, G. (2014). Faulting processes in active faults – evidence from TCDP and SAFOD drill core samples. J. Struct. Geol. (in press).

Books and Special Journal Issues

H.-R. Wenk Edit. (1976). Electron Microscopy in Mineralogy, Springer-Verlag, Berlin-Heidelberg-New York, 564 pp.

H.-R. Wenk (1979).  Elektronia Mikroskopia B Mineralogii  (Russian translation), MIR, Moscow, 541 pp.

H.-R. Wenk (1985).  Edit. Preferred Orientation in Deformed Metals and Rocks.  An Introduction to Modern Texture Analysis, Academic Press.

H.-R. Wenk (1991).  Edit. Preferred Orientation in Deformed Metals and Rocks.  An Introduction to Modern Texture Analysis  (Chinese translation).

S.H. Kirby, A.G. Sylvester, J. Tullis and H.-R. Wenk, Editors (1993) Microstructures and Rheology of Rocks and Rock-forming Minerals (John Christie Volume). Special Issue,  J. Struct. Geol. 15, 1061-1271.

H.-R. Wenk, Editor (1994) Polyphase Polycrystal Plasticity. Special Issue: Materials Science and Engineering, A175, 1-277.

U.F. Kocks, C. Tomé and H.-R. Wenk (1998). Texture and Anisotropy. Preferred Orientations in Polycrystals and Their Effect on Materials Properties. Cambridge University Press, 676pp.

U.F. Kocks, C. Tomé and H.-R. Wenk (2000). Texture and Anisotropy. Preferred Orientations in Polycrystals and Their Effect on Materials Properties. 2^nd paperback edition. Cambridge University Press, 676pp.

H.-R. Wenk, P. Dawson, C. Pelkie and Y. Chastel (1999). Texturing of Rocks in the Earth’s Mantle. A Convection Model Based on Polycrystal Plasticity. Video. Amer. Geophys. U.

S.-Y. Karato and H.-R. Wenk Eds. (2002). Plastic Deformation of Minerals and Rocks, Reviews in Mineralogy and Geochemistry,  Mineral. Soc. America, 420pp.

D. Mainprice, T. Popp, Y. Gueguen, E. Huenges, E. Rutter, H.-R Wenk and L. Burlini Eds. (2003).Physical Properties of Rocks and Other Geomaterials. A Special Volume to honour Professor H. Kern. Tectonophysics, Volume 370.

H.-R. Wenk and A. Bulakh (2004). Minerals. Their Constitution and Origin. Cambridge University Press, 646pp. (Fifth printing 2011).

H. Liu, H.-R. Wenk, T.S. Duffy Eds. (2006). Rheology and Elasticity Studies at Ultra-high Pressures and Temperatures. Special Issue, J. Physics, Condensed Matter 18, S921-1103.

H.-R. Wenk Ed. (2006). Neutron Scattering in Earth Sciences, Reviews in Mineralogy and Geochemistry 63,  Mineral. Soc. America, 620pp.