The SKAT texture diffractometer at the pulsed reactor IBR-2 at Dubna: experimental layout and first measurements

Ullemeyer, Klaus; Spalthoff, P.; Heinitz, Joachim; Isakov, N. N.; Nikitin, A. N.; Weber, Klaus

doi:10.1016/s0168-9002(98)00340-4

Cited by 106 publications

(50 citation statements)

References 9 publications

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“…CPO measurements were performed at the neutron time-of-flight (TOF) texture diffractometer SKAT at the Frank Laboratory of Neutron Physics at JINR, Dubna, Russia (Ullemeyer et al, 1998;Keppler et al, 2014 Matthies et al 1997). We used the MAUD software for the texture evaluation (Lutterotti et al, 1997;Wenk et al, 2010), for the discussion of practical limitations refer to Wenk et al (2012) and Keppler et al (2014).…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Crystallographic preferred orientations of exhumed subduction channel rocks from the Eclogite Zone of the Tauern Window (Eastern Alps, Austria), and implications on rock elastic anisotropies at great depths

et al. 2015

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Crystallographic preferred orientations of exhumed subduction channel rocks from the Eclogite Zone of the Tauern Window (Eastern Alps, Austria), and implications on rock elastic anisotropies at great depths

et al. 2015

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“…Neutron diffraction measurements for texture analysis were done by means of the time-of-flight (TOF) texture diffractometer SKAT at the Frank Laboratory of Neutron Physics at JINR (Dubna, Russia) [Ullemeyer et al, 1998;Keppler et al,2014]. Its resolution allowed sufficient number of not overlapped pole figures to be extracted from the diffraction spectra by simple integration of the peak intensity after background subtraction.…”

Section: Methodsmentioning

confidence: 99%

\baselineskip =13pt Orientation distribution function of biotite platelets based on optical, thin sections and $\mu $-CT image analysis in an Outokumpu (Finland) biotite gneiss: Comparison with neutron diffraction texture analysis

Duliu¹,

Ivankina²,

Herman³

et al. 2016

Russ. J. Earth Sci.

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The results of the neutron diffraction investigation were compared with similar results obtained by analysing more -CT, high resolution photographic and thin section images of a cylindrical sample of the textured Outokumpu (Finland) biotite gneiss. All data were interpreted by means of corresponding orientation distribution function (ODF). Both Rayleigh test of uniformity and Rao's test for homogeneity of the corresponding ODF confirmed the existence of a real anisotropic distribution of mineralogical phases within investigated specimens. Together with the neutron diffraction pole figures, ODF, unambiguously proved the existence of a lattice as well as of the shape preferred orientations of the mineralogical components of the complex Outokumpu gneiss. KEYWORDS: Outokumpu; mica gneiss; neutron diffraction; computed tomography; foliation; lineation; orientation distribution function.

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“…The diffraction experiments were carried out at the TOF diffractometer SKAT at the pulsed reactor IBR-2 in Dubna, Russia (Ullemeyer et al 1998). Application of TOF neutrons offers the opportunity to record complete diffraction patterns, i.e., to measure all interesting pole figures simultaneously.…”

Section: Lpo Evaluation From Neutron Diffraction Datamentioning

confidence: 99%

“…In this study, analyses of the LPOs of all rock-forming minerals in two granitic rocks were performed at the SKAT-diffractometer at the pulsed reactor IBR-2 in Dubna, Russia (Ullemeyer et al 1998). The two granitoids are the Meissen monzonite of the Elbe Zone at the NE border of the Eastern Erzgebirge in Germany and the Podlesí dyke granite of the Western Krušne Hory (Western Erzgebirge) in Czech Republic.…”

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confidence: 99%

Lattice-preferred orientations of late-Variscan granitoids derived from neutron diffraction data: implications for magma emplacement mechanisms

Müller

Leiss

Ullemeyer

et al. 2010

Int J Earth Sci (Geol Rundsch)

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The lattice-preferred orientation (LPOs) of two late-Variscan granitoids, the Meissen monzonite and the Podlesí dyke granite, were determined from high-resolution time-of-flight neutron diffraction patterns gained at the diffractometer SKAT in Dubna, Russia. The results demonstrate that the method is suitable for the LPO analysis of polyphase, relatively coarse-grained (0.1-6 mm) rocks. The Meissen monzonite has a prominent shape-preferred orientation (SPO) of the non-equidimensional minerals feldspar, mica and amphibole, whereas SPO of the Podlesí granite is unapparent at the hand-specimen scale. The neutron diffraction data revealed distinct LPOs in both granitoids. The LPO of the non-equidimensional minerals feldspar, mica and amphibole developed mainly during magmatic flow. In the case of the Meissen monzonite, the magmatic flow was superimposed by regional shear tectonics, which, however, had no significant effect on the LPOs. In both samples, quartz shows a weak but distinct LPO, which is atypical for plastic deformation and different in the syn-kinematic Meissen monzonite and the postkinematic Podlesí granite. We suggest that, first of all, the quartz LPO of the Meissen monzonite is the result of oriented growth in an anisotropic stress field. The quartz LPO of the Podlesí granite, which more or less resembles a deformational LPO in the flattening field of the local strain field, developed during magmatic flow, whereby the rhombohedral faces of the quartz crystals adhered to the (010) faces of aligned albite and to the (001) faces of zinnwaldite. Due to shape anisotropy of their attachments, the quartz crystals were passively aligned by magmatic flow. Thus, magmatic flow and oriented crystal growth are the major LPO-forming processes in both granitoids. For the Meissen monzonite, the solid-state flow was too weak to cause significant crystallographic re-orientation of the minerals aligned by magmatic flow. Finally, the significance of our results for the evaluation of the regional tectonic environment during magma emplacement is discussed. The discussion on the regional implications of the more methodologically oriented results provides the basis for future, more regionally aimed studies in view of the fabric characteristics of such plutons and their developing mechanisms.

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The SKAT texture diffractometer at the pulsed reactor IBR-2 at Dubna: experimental layout and first measurements

Cited by 106 publications

References 9 publications

Crystallographic preferred orientations of exhumed subduction channel rocks from the Eclogite Zone of the Tauern Window (Eastern Alps, Austria), and implications on rock elastic anisotropies at great depths

Crystallographic preferred orientations of exhumed subduction channel rocks from the Eclogite Zone of the Tauern Window (Eastern Alps, Austria), and implications on rock elastic anisotropies at great depths

\baselineskip =13pt Orientation distribution function of biotite platelets based on optical, thin sections and $\mu $-CT image analysis in an Outokumpu (Finland) biotite gneiss: Comparison with neutron diffraction texture analysis

Lattice-preferred orientations of late-Variscan granitoids derived from neutron diffraction data: implications for magma emplacement mechanisms

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