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Porphyroblastic Turkish blueschist by Callan Bentley

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About This Gigapan

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Taken by
Callan Bentley Callan Bentley
Explore score
1
Size
0.70 Gigapixels
Views
338
Date added
Jan 20, 2012
Date taken
 
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Description

Blueschist bearing porphyroblasts of the amphiobole glaucophane, the mineral that gives blueschist its blue color. Sample was collected in Turkey's Tavşanlı Zone, a subduction zone complex that formed as the Tethys Ocean closed. These rocks were dunked to around 80 km depth (precipitating the metamorphic reaction that made the glaucophane) before being exhumed to the surface. Maximum width of sample is about 20 cm.
Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as seen here:
gigamacro.com/gigapixel-macro-imaging-system Will open in a new tab or window/


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Stitcher Notes

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GigaPan Stitch version 1.2.0087 (Windows)
Panorama size: 703 megapixels (38292 x 18364 pixels)
Input images: 310 (31 columns by 10 rows)
Field of view: 51.6 degrees wide by 24.7 degrees high (top=7.7, bottom=-17.0)
Settings:
Vignette correction off
Use larger blending region
Original image properties:
Camera make: unknown
Camera model: unknown
Image size: 5184x3456 (17.9 megapixels)
Capture time: unknown
Aperture: unknown
Exposure time: unknown
ISO: unknown
Focal length (35mm equiv.): unknown
White balance: unknown
Exposure mode: unknown
Horizontal overlap: 78.5 to 79.8 percent
Vertical overlap: 48.5 to 54.4 percent
Computer stats: 4000.13 MB RAM, 4 CPUs
Total time 37:09 (7.2 seconds per picture)
Alignment: 11:41, Projection: 4:59, Blending: 20:30
(Preview finished in 23:36)

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