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5.1: S6 Striped Rock Granite

  • Page ID
    11147
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    Outcrop and Hand Sample Photos and Videos

    The “Striped Rock” name comes from Anna Jonas Stose. The “stripes” are not part of the rock itself; rather, they are formed from oxidation and staining of the surface of the granite as can be seen in the 1st picture of a quarry wall:

    S6-Striped-Rock-Granite-2-scaled-1.jpg

    The Striped Rock granite does contain enclaves, or xenoliths, of a more mafic igneous rock. There is a long, skinny enclave in the boulder to the right of the person with the red hat (below). You can also see an example in the YouTube hand sample video.

    S6-Striped-Rock-Granite-3-scaled-1.jpg

    Thin Section Photos and Videos

    1st = plane polarized light; 2nd = cross-polarized light.

    Biotite, quartz, k-feldspar. Can you see the recrystallization texture in the quartz?

    S6-Striped-Rock-ppl-4x-300x225.jpg
    S6-Striped-Rock-xpl-4x-300x225.jpg

    Entire thin section scan. 1st = ppl; 2nd = xpl. 

    S6-Striped-Rock-ppl-scaled-1.jpg
    S6-Striped-Rock-xpl-scaled-1.jpg

    This page titled 5.1: S6 Striped Rock Granite 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.