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Antietam Breccia 1 by Alan Pitts

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About This Gigapan

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Taken by
Alan Pitts Alan Pitts
Explore score
1
Size
1.43 Gigapixels
Views
406
Date added
Mar 20, 2012
Date taken
Mar 20, 2012
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Description

This is an outcrop of brecciated quartzite located along the Shenendoah River near Ashby Gap Virginia. The quartzite is from the Cambrian Antietam formation, the upper most clastic unit of the Blue Ridge stratigraphic stack. The Antietam formation is interpreted as a beach/barrier island sand at the top of a transgressive sequence marking the break up of Rodinia. The brittle deformation of this rock is thought to have occured as a result of the westward thrusting and folding of the Blue Ridge province during Alleghenian mountain building.

This Breccia occurs at the top of the Antietam formation near the contact with the overlying Tomstown Formation and could be local evidence of the larger Blue Ridge Thrust Fault system.

Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection


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Stitcher Notes

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GigaPan Stitch version 1.1.1565 (Macintosh)
Panorama size: 1425 megapixels (43924 x 32464 pixels)
Input images: 182 (14 columns by 13 rows)
Field of view: 66.2 degrees wide by 48.9 degrees high (top=31.6, bottom=-17.3)
Settings:
Vignette correction on: c1=-0.11 c2=-0.00554
All default settings
Original image properties:
Camera make: Canon
Camera model: Canon PowerShot SX120 IS
Image size: 3648x2736 (10.0 megapixels)
Capture time: 2012-03-20 14:11:04 - 2012-03-20 14:30:22
Aperture: f/4.3
Exposure time: 0.0333333
ISO: 80
Focal length (35mm equiv.): 361.4 mm
Digital zoom: off
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 14.2 to 27.3 percent
Vertical overlap: 8.2 to 11.7 percent
Computer stats: 3840 MB RAM, 2 CPUs
Total time 22:16 (7.3 seconds per picture)
Alignment: 5:06, Projection: 1:58, Blending: 15:12
(Preview finished in 8:48)

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