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Great teaching GigaPans > Graded Slate & Graywacke Beds by Brian Allison

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About This Gigapan

Taken by
Brian Allison Brian Allison
Explore score
1.83 Gigapixels
Date added
Aug 12, 2013
Date taken
Aug 09, 2013

Another classic outcrop in northern Minnesota is the graded beds of graywacke and slate found west of Tower. This outcrop contains white or gray metagraywacke and black slate. Each metagraywacke bed is graded - course grains on the bottom, with finer grains on the top. Though now vertical, each bed would have been originally deposited horizontally by a separate turbidity current. There are 228 metagraywacke beds on this outcrop, with a 146 of them being graded - the vasy majority of the graded beds have the tops to the south (left side of the image).

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Stitcher Notes


GigaPan Stitch version 2.1.0160 (Macintosh)
Panorama size: 1829 megapixels (63452 x 28832 pixels)
Input images: 330 (22 columns by 15 rows)
Field of view: 103.1 degrees wide by 46.8 degrees high (top=-17.7, bottom=-64.5)
Vignette correction off
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot S3 IS
Image size: 2816x2112 (5.9 megapixels)
Capture time: 2013-08-09 13:24:15 - 2013-08-09 13:43:56
Aperture: f/8
Exposure time: 0.004
ISO: unknown
Focal length (35mm equiv.): 435.8 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 4.1 to 55.0 percent
Vertical overlap: 6.8 to 19.4 percent
Computer stats: 8192 MB RAM, 4 CPUs
Total time 21:49 (4.0 seconds per picture)
Alignment: 14:06, Projection: 1:08, Blending: 6:34
(Preview finished in 16:53)

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