'Preferred orientation' presentation slideshows

1.12k views • 93 slides

Metamorphic Textures Textures of Contact Metamorphism

Metamorphic Textures Textures of Contact Metamorphism. Sandstone texture. Quartzite texture. Metamorphic Textures Textures of Regional Metamorphism. Dynamothermal (crystallization under dynamic conditions) Orogeny- long-term mountain-building May comprise several Tectonic Events

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Metamorphic Textures Textures of Regional Metamorphism

Metamorphic Textures Textures of Regional Metamorphism. Dynamothermal (crystallization under dynamic conditions) Orogeny - long-term mountain-building May comprise several Tectonic Events May have several Deformational Phases

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Metamorphic Textures Textures of Regional Metamorphism

Metamorphic Textures Textures of Regional Metamorphism. Dynamothermal (crystallization under dynamic conditions) Orogeny - long-term mountain-building May comprise several Tectonic Events May have several Deformational Phases

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Non-Ideal Data Diffraction in the Real World

Non-Ideal Data Diffraction in the Real World. Scott A Speakman, Ph.D. speakman@mit.edu http://prism.mit.edu/xray. The calculated diffraction pattern represents the ideal X-ray powder sample. The ideal powder sample Millions of grains Randomly oriented grains Flat Smooth surface

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Ognyan Petrov

Ognyan Petrov. International School on Introduction in the Rietveld structure refinement Sofia, Bulgaria, 28 September - 3 October 2015. Powder XRD quantitative analysis (using the Rietveld methodoly ).

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Capillary Interactions between Anisotropic Particles Kathleen J Stebe Chemical and Biomolecular Engineering Universi

Capillary Interactions between Anisotropic Particles Kathleen J Stebe Chemical and Biomolecular Engineering University of Pennsylvania. Acknowledgements. Eric Lewandowski-experiment, analysis Marcello Cavallaro -curvature gradients, confinement Lorenzo Botto -simulation, analysis

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Least squares & Rietveld

Least squares & Rietveld. Have n points in powder pattern w/ observed intensity values Y i obs Minimize this function:. Least squares & Rietveld. Minimize this function: Substitute for Y i calc background at point i. Least squares & Rietveld. Minimize this function:

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Method of Soil Analysis 1.5 Geostatistics 1.5.1 Introduction 1.5.2 Using Geostatistical Methods

Method of Soil Analysis 1.5 Geostatistics 1.5.1 Introduction 1.5.2 Using Geostatistical Methods. 1 Dec. 2004 D1 Takeshi TOKIDA. 1.5.1 Introduction. True understanding of the spatial variability in the soil map is very limited. Distinct boundary (too continuous or sudden change).

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METAMORPHISM

METAMORPHISM. Introduction. METAMORPHISM. What is metamorphism?. The IUGS-SCMR has proposed the following definition of metamorphism:

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Vertical mantle flow associated with a lithospheric drip beneath the Great Basin

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Applications of X-Ray Diffraction

Applications of X-Ray Diffraction. Dr. T. Ramlochan March 2010. Applications of powder diffraction. Diffraction pattern gives information about peak positions , intensity , and shape

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Claylab Applied Geology & Mineralogy

Claylab Applied Geology & Mineralogy. X-ray diffraction A tool for material characterization and mineral quantification. Rieko Adriaens rieko.adriaens @ ees.kuleuven.be. 23/01/2013. X-ray diffraction on mineral powders. Mono- chromator. Antiscatter- slit. Divergence slit.

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Acknowledgements

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Lecture FIVE Metamorphic Textures

Lecture FIVE Metamorphic Textures. Metamorphic fabric and textures. ? Again , Identification of a given metamorphic rock depend on: 1- Mineral composition 2- Texture Metamorphic rocks undergo deformation during their crystallization as a result of pressure influence.

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Are your X-ray powder diffraction patterns any good?

Are your X-ray powder diffraction patterns any good?. divergence slit. alignment slit. receiving slit. 2:1 alignment slit. divergence slit. receiving slit. set 2 ? = 0. set ? = 0. Quality of powder diffraction data. Is diffractometer properly aligned & operating correctly?

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ICDD Workshop 1 and 3 Sample Preparation Group C

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Effect of Preferred Orientation on Powder Diffraction Data

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How do we perceive elongated patch?

How do we perceive elongated patch?. Probability summation. Physiological summation. Differences. Probability summation: independent of the configuration of the stimuli Physiological summation: may depends on the configuration of the stimuli. STIMULI. Collinear vs Orthogonal .

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