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4.9: BC/Bu 25 (Upper Zone)

  • Page ID
    11118
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)

    HAND SAMPLE IMAGES AND VIDEOS

    Bu25-1-scaled-1.jpg Bu25-2-scaled-1.jpg

    THIN SECTION IMAGES AND VIDEOS

    Images were obtained using a 4x objective (40x total magnification). 1st image = PPL. 2nd image = XPL. 

    Spot 1

    Bc25-1-ppl-4x-300x225.jpg
    Bc25-1-xpl-4x-300x225.jpg

    Spot 2

    Bc25-2-ppl-4x-300x225.jpg
    Bc25-2-xpl-4x-300x225.jpg

    Spot 3

    Bc25-3-ppl-4x-300x225.jpg
    Bc25-3-xpl-4x-300x225.jpg

    THIN SECTION SCANS

    Click on the image for a larger, downloadable version. Top image = plane polarized light. Second image = cross polarized light. Third image = juxtaposition of ppl and xpl. Thin section is 2.54 cm wide (distance from top to bottom of image).

    Bu25-ppl-5x7-1200dpi-scaled-1.jpg
    Bu25-xpl-5x7-1200dpi-scaled-1.jpg

    Query \(\PageIndex{1}\)


    This page titled 4.9: BC/Bu 25 (Upper Zone) is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Elizabeth Johnson and Juhong Christie Liu (Virtual Library of Virginia) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.