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Coast Ranges Geology > The Monolith at The Pinnacles, central California Coast Ranges by ahochstaedter

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About This Gigapan

Taken by
ahochstaedter ahochstaedter
Explore score
1.03 Gigapixels
Date added
Jan 29, 2012
Date taken
Jan 28, 2012

This view of The Monolith at the Pinnacles National Monument in central California shows medium-distance details of the volcanic breccia that comprises the iconic rocks of the park. The angular hand- to head-sized cobbles within the breccia indicate a high energy of the depositional setting located not far from the volcanic source area. The rough but consistent layering indicates that water was probably involved in the depositional processes. Nearly all of the clasts are siliceous volcanic rocks including dacite and rhyolite. These observations lead to an interpretation involving a landslides transporting eroded material into underwater grabens or depressions.

To put this view into geographic context, a broader gigapan is here:
Another Pinnacles gigapan of the reservoir area is here:
Close-ups of the volcanic breccia are here:
zoom.it/wmFj Will open in a new tab or window
zoom.it/WpbI Will open in a new tab or window
zoom.it/LBjJ Will open in a new tab or window
zoom.it/GqIv Will open in a new tab or window
zoom.it/NO3W Will open in a new tab or window
Climbers and ropes provide scale. Information about climbing routes is here:
www.rockclimbing.com/routes/North_America/United_States/California/Central_California_Coast/Pinnacles_National_Monument/Monolith__The Will open in a new tab or window/
A good 2008 summary of the geology of the park is here
sfnps.org/download_product/1381/0 Will open in a new tab or window
The classic 1936Phillip Andrews treatise on the geology of the Pinnacles is here
www.cr.nps.gov/history/online_books/geology/publications/state/ca/uc-24-1 Will open in a new tab or window/

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Stitcher Notes


GigaPan Stitch version 1.0.0805 (Windows)
Panorama size: 1031 megapixels (33860 x 30460 pixels)
Input images: 208 (13 columns by 16 rows)
Field of view: 37.3 degrees wide by 33.6 degrees high (top=6.8, bottom=-26.8)
All default settings
Original image properties:
Camera make: PENTAX
Camera model: PENTAX K-r
Image size: 4288x2848 (12.2 megapixels)
Capture time: 2012-01-28 13:13:34 - 2012-01-28 13:27:33
Aperture: f/8
Exposure time: 0.00125
ISO: 200
Focal length (35mm equiv.): 450.0 mm
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 42.9 to 51.1 percent
Vertical overlap: 34.1 to 53.2 percent
Computer stats: 8098.69 MB RAM, 8 CPUs
Total time 37:27 (11 seconds per picture)
Alignment: 8:35, Projection: 12:13, Blending: 16:39
(Preview finished in 29:24)

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