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Anorthosite Xenolith by Ron Schott

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About This GigaPan

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Taken by
Ron Schott Ron Schott
Explore score
79
Size
4.40 Gigapixels
Views
834
Date added
September 12, 2011
Date taken
September 03, 2011
Gear

Canon EOS 550D (T2i)

GigaPan Epic100 (2nd generatio...

Categories
environmental, geology, landscape, nature, travel
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Description

Can you find the anorthosite xenolith in this roadcut of diabase? (Hint: it's LARGE.)

GigaPan Comments (2)

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  1. Ron Schott

    Ron Schott (September 13, 2011, 11:26AM )

    Whether a xenolith gets cooked (metamorphosed) or not depends on a number of factors. It's certainly common for many xenoliths (but not all) to have at least a little contact metamorphism at their margins and some are pervasively metamorphosed. I don't recall seeing any evidence of metamorphism in this particular xenolith, but I didn't linger and examine it as much as I would have liked to.

  2. Chris Fastie

    Chris Fastie (September 13, 2011, 10:58AM )

    So is a xenolith generally going to be metamorphosed in the process of being surrounded by magma? If so, is this a metanorthosite xenolith?

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Stitcher Notes

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GigaPan Stitch version 1.2.0113 (Windows)
Panorama size: 4401 megapixels (106028 x 41516 pixels)
Input images: 392 (28 columns by 14 rows)
Field of view: 157.9 degrees wide by 61.8 degrees high (top=55.5, bottom=-6.3)
Settings:
Vignette correction on: c1=0.00413 c2=0.00119
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon EOS REBEL T2i
Image size: 5184x3456 (17.9 megapixels)
Capture time: 2011-09-03 07:57:38 - 2011-09-03 08:33:49
Aperture: f/5.6
Exposure time: 0.002
ISO: 100
Focal length (35mm equiv.): 259.5 mm
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 26.3 to 63.7 percent
Vertical overlap: 7.5 to 31.1 percent
Computer stats: 4010.17 MB RAM, 4 CPUs
Total time 1:18:55 (12 seconds per picture)
Alignment: 10:49, Projection: 9:41, Blending: 58:25
(Preview finished in 30:50)