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Limestone Bluff Forest and Champlain Thrust Fault, Vermont by Chris Fastie

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About This Gigapan

Taken by
Chris Fastie Chris Fastie
Explore score
1.04 Gigapixels
Date added
Aug 13, 2009
Date taken
Aug 09, 2009

Nikkor AF 70-300mm f/4-5.6, Ni...


Limestone Bluff Cedar-Pine Forest at Lone Rock Point, Vermont – Dunham dolostone (Cambrian, light color) has been thrust to the west as much as 80 km (50 miles) and rests here on top of much younger Iberville shale (Ordovician, black). The contrasting appearance of the two rock types, and the ca. 50 million year difference in their ages, contribute to the fame of this exposure. Three commercial tour boats slowed for a look while I was there (there is a better exposure around the point to the right).

The calcareous dolostone supports a forest of northern white cedar. Common on rocky headlands like this, the forest type is rare elsewhere in Vermont. A snapshot of this gigapan shows the location of another gigapan (www.gigapan.org/viewGigapan.php?id=30375) showing the interior of the bluff forest.

Some technical notes are in a comment.

Gigapan Comments (1)

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  1. Chris Fastie

    Chris Fastie (August 14, 2009, 04:07AM )

    Notes: The stitcher notes are incomplete because the camera battery died during the last row. In the process of replacing it (removing the camera from the imager), the zoom changed from a focal length of 250mm to 220mm. I was able to line things up to take the bottom row, and it stitched great (fortunately it was all water), but I guess the stitcher does not know what to put into the notes when all of the photos do not have the same EXIF data for some values. Note that by the time the bottom row was started again, the sun had come out. Here is some EXIF data: Nikon D40, Focal length (35mm equiv.): 375 (except the bottom row), aperture: f/11, Exposure time: 0.033 second, ISO: 200 ... Camera location from GPS: N44 29.757 W73 14.846

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Stitcher Notes


GigaPan Stitcher version 0.4.4090 (Windows)
Panorama size: 1042 megapixels (60334 x 17275 pixels)
Input images: 384 (12 columns by 32 rows)
Field of view: 106.0 degrees wide by 30.3 degrees high (top=11.8, bottom=-18.6)
All default settings
Original image properties:
Camera model: NIKON D40
Image size: 3008x2000 (6.0 megapixels)
Capture time: unknown
Aperture: unknown
Exposure time: unknown
ISO: unknown
Focal length (35mm equiv.): unknown
White balance: unknown
Exposure mode: unknown
Horizontal overlap: 29.6 to 46.2 percent
Vertical overlap: 21.5 to 33.4 percent
Computer stats: 3581.58 MB RAM, 2 CPUs
Total time 1:41:34 (0:35 per picture)
Alignment: 30:02, Projection: 7:54, Blending: 1:03:38

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