Image:DirkvdM irazu 3.jpg

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Detail of Volcán Irazú, Costa Rica. For an overview see Image:DirkvdM_irazu_2.jpg.

I asked what this is at w:Talk:Volcanology#Rock and got the following reply:

Looks like an w:unconformity, a more recent lava flow on top of older material. The tilting - craters result from the collapse of a volcanic core which creates considerable local faulting and distortion, so folded or tilted and distorted lava layers are to be expected around a caldera collapse. Vsmith 13:12, 31 August 2006 (UTC)

So it's an uncomformity, something I can identify with. :)

Camera location

9°58′42.9″N, 83°51′0.7″W

This and other geocoded Commons images: (Info)

(precision: 50 m)

Original filename: 040130_4196r.jpg


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Photograph taken by Dirk van der Made

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File history

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Date/TimeDimensionsUserComment
current17:50, 23 August 2006852×1,136 (165 KB)DirkvdM (Detail of Volcán Irazú, Costa Rica. For an overview see Image:DirkvdM_irazu_2.jpg. Original filename: 040130_4196r.jpg {{dvdm-h6}} )
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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Camera manufacturer Canon
Camera model Canon DIGITAL IXUS 400
Exposure time 1/200 sec (0.005)
F-number f/13
Date and time of data generation 18:20, 30 January 2004
Lens focal length 22.21875 mm
Orientation Normal
Horizontal resolution 180 dpi
Vertical resolution 180 dpi
File change date and time 18:20, 30 January 2004
Y and C positioning 1
Exif version 2.2
Date and time of digitizing 18:20, 30 January 2004
Image compression mode 5
Shutter speed 7.65625
Aperture 7.40625
Exposure bias 0
Maximum land aperture 4.59375
Metering mode Pattern
Flash 16
Color space sRGB
Focal plane X resolution 8114.2857142857
Focal plane Y resolution 8114.2857142857
Focal plane resolution unit inches
Sensing method One-chip color area sensor
Custom image processing Normal process
Exposure mode Auto exposure
White balance Manual white balance
Digital zoom ratio 1
Scene capture type Standard