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Snowball Earth > Snowball Earth Educational Rock Sample Suite P101A by Robin Rohrback

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About This Gigapan

Taken by
Robin Rohrback Robin Rohrback
Explore score
0.23 Gigapixels
Date added
Nov 14, 2012
Date taken

Sample P101A, from the Ravensthroat Formation in northwest Canada, is a laminated peloidal cap dolostone. The graded and reverse-graded peloids exhibit low-angle cross laminations easily visible to the naked eye. Peloid deposition reflects conditions in which calcium carbonate precipitation is occuring rapidly and has been associated with the hothouse aftermath of a Snowball Earth event.

Sample is 10.5 cm long.

This sample is from the Snowball Earth Educational Rock Sample Suite, and comes courtesy of Paul Hoffman, Harvard University; Eugene Domack, Hamilton College; and Timothy Fox, Hamilton College.
For more information on the Snowball Earth Educational Rock Sample Suite, visit www.snowballearth.org/samples.html Will open in a new tab or window Will open in a new tab or window Will open in a new tab or window

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


GigaPan Stitch version 2.0.0501 (Windows)
Panorama size: 226 megapixels (11684 x 19424 pixels)
Input images: 44 (4 columns by 11 rows)
Field of view: 3.1 degrees wide by 5.1 degrees high (top=-3.7, bottom=-8.8)
Vignette correction on: c1=0.257 c2=-0.0598
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: 58.9 to 59.3 percent
Vertical overlap: 53.7 to 54.6 percent
Computer stats: 3996.82 MB RAM, 2 CPUs
Total time 10:13 (14 seconds per picture)
Alignment: 30 seconds, Projection: 1:41, Blending: 8:02
(Preview finished in 3:10)

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