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Amphibolite from Great Falls, MD by Robin Rohrback-Schiavone

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About This Gigapan

Taken by
Robin Rohrback-Schiavone Robin Rohrback-Schiavone
Explore score
0.62 Gigapixels
Date added
Oct 26, 2012
Date taken

Amphibolite similar to the amphibolite exposed on the Billy Goat Trail.

Amphibolite is a metamorphic rock very rich in the mineral hornblende (an amphibole), which shows up black in this image. The white mineral in the rock is plagioclase feldspar.

This is a very mafic metamorphic rock, with large crystals. Amphibolite occurs as large, folded, tabular masses in the area of the Billy Goat Trail.

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Stitcher Notes


GigaPan Stitch version 2.0.0501 (Windows)
Panorama size: 618 megapixels (32260 x 19164 pixels)
Input images: 154 (14 columns by 11 rows)
Field of view: 15.2 degrees wide by 9.1 degrees high (top=7.2, bottom=-1.8)
Vignette correction on: c1=-0.0988 c2=-0.00696
All default settings
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: 59.0 to 61.1 percent
Vertical overlap: 53.6 to 56.0 percent
Computer stats: 3996.82 MB RAM, 2 CPUs
Total time 36:28 (14 seconds per picture)
Alignment: 3:32, Projection: 9:12, Blending: 23:44
(Preview finished in 17:10)

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