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Summaryedit
Description |
English: The landscape in the central Andes Mountains, near the border between Chile and Argentina, is dominated by volcanoes and associated landforms. Layers of older sedimentary rocks are visible to the upper middle, and many volcanic cones show grooves where water has eroded the rock to form gullies. Such erosion has occurred since the host volcano was built up, indicating that most volcanoes in this view have been inactive for centuries or millennia.
A few volcanoes exhibit much less erosion, and even show tongues of dark, recent lava flows (upper left). Two of these volcanoes, Cerro el Cóndor and Peinado, have likely erupted within the past 12,000 years. Also visible is the world’s highest active volcano, Nevado Ojos del Salado, with a summit 6,887 meters above sea level. The most recent confirmed eruption has been dated to the year 700 (+/- 300 years), but minor eruptive activity may have occurred as recently as 1993. The landscape also shows that the erosive work of rivers and glaciers in the region is slower than the upward building processes of the volcanoes. The bright blue lake -- nearly 7 km long -- near the centre of the image is Laguna Verde. This and other less obvious lakes indicate that water from snow-melt or direct precipitation is unable to reach the sea, being impounded in the depressions between the volcanic edifices. |
Date | |
Source | NASA Earth Observatory |
Author | ISS Expedition 24 crew |
Camera location | View this and other nearby images on: OpenStreetMap - Google Maps - Google Earth |
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This image or video was catalogued by Johnson Space Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS024-E-12425. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information. |
Image acquired with a Nikon D2Xs digital camera using an 80 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center.
Licensingedit
This file is in the public domain because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |
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Warnings:
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Annotations | This image is annotated: View the annotations at Commons |
Public Domain
EXIF data: | |
File name | volcanic_landscapes__central_andes.jpg |
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Size, Mbytes | 2.8304404296875 |
Mime type | image/jpeg |
Camera manufacturer | NIKON CORPORATION |
Camera model | NIKON D2Xs |
Orientation of image | 1 |
Image resolution in width direction | 240 |
Image resolution in height direction | 240 |
Unit of X and Y resolution | 2 |
Exposure time | 1/800 sec (0.00125) |
F number | f / 5.3 |
Exposure program | 4 |
ISO speed rating | 200 |
Exif version | 0221 |
Lens focal length | 80 mm |
Date and time original image was generated | 2010:08:22 12:44:52 |
Date and time image was made digital data | 2010:08:22 12:44:52 |
Shutter speed | 9.643856 |
Aperture | 4.811985 |
Exposure bias | 0 |
Maximum lens aperture | 3 |
Metering mode | 5 |
User comments | ASCII 1137 72.5F |
Color space information | 1 |
Exif image width | 4288 |
Exif image length | 2846 |
Sensing method | 2 |
Scene type | |
CFA pattern | |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 120 mm |
Contrast | 1 |
Software used | Microsoft Windows Photo Gallery 6.0.6001.18000 |
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