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Pacific Coast Geology > Seacliff at Garrapata Beach, California by ahochstaedter

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About This Gigapan

Taken by
ahochstaedter ahochstaedter
Explore score
2.09 Gigapixels
Date added
Jan 13, 2012
Date taken
Dec 30, 2011

The seacliff at Garrapata Beach exposes granite on the left (north) and Cretaceous sedimentary rocks on the right (south). The contact between the two is the Palo Colorado Fault, which is exposed beneath the stairs. The granite is Cretaceous in age (~!00 Ma), as are the sedimentary rocks. The sedimentary rocks are comprised of turbidites, deposited on a submarine fan. Closer inspection of these sedimentary rocks reveals nice graded bedding structures.

The Palo Colorado Fault is the on-shore continuation of the San Gregario Fault which lies offshore, trending along the submarine Carmel Canyobn, across Monterey Bay, and eventually joining the San Andreas Fault offshore of the Goldent Gate. The fault zone here is brecciated melange. The granites are highly fractured and disply horizontal slickensides near the fault. The rocks in the seacliff here are often wet, indicating the presence of ground water flowing through fractures associated with the faulting.

A nice example of tafoni occurs in the sedimentary rock to the right of the stairs. the tafoni is best developed on layers closest to beach level.

A closer view of the fault is here:
And an even closer view here:
zoom.it/WLV5 Will open in a new tab or window

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Stitcher Notes


GigaPan Stitch version 1.0.0805 (Windows)
Panorama size: 2091 megapixels (94096 x 22228 pixels)
Input images: 456 (38 columns by 12 rows)
Field of view: 191.8 degrees wide by 45.3 degrees high (top=29.1, bottom=-16.2)
All default settings
Original image properties:
Camera make: PENTAX
Camera model: PENTAX K-r
Image size: 4288x2848 (12.2 megapixels)
Capture time: 2011-12-30 15:50:29 - 2011-12-30 16:25:28
Aperture: f/9
Exposure time: 0.01
ISO: 200
Focal length (35mm equiv.): 225.0 mm
White balance: Fixed
Exposure mode: Manual
Horizontal overlap: 37.2 to 50.3 percent
Vertical overlap: 34.5 to 41.8 percent
Computer stats: 8098.69 MB RAM, 8 CPUs
Total time 3:55:40 (31 seconds per picture)
Alignment: 1:04:44, Projection: 27:05, Blending: 2:23:51
(Preview finished in 3:13:34)

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