File:Tufa_petroglyph_site.jpg
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DescriptionTufa petroglyph site.jpg | Winnemucca Lake, NV, USA. Petroglyphs were carved into the tufa structures by prehistoric Native Americans. Radiocarbon dating of tufa laysrs covering the petroglyphs in 2013 showed these to be the oldest known petroglyphs in the Americas. Formal designation: archaeological site 26 Wa 3329, Scale: The tree shaped petroglyph at the left side is aprox. 70cm long, Dating: between 11.300 and 10.500 calibrated years B.P. | ||||
Date | |||||
Source | https://dx.doi.org/10.1016/j.jas.2013.06.022 Fig. 2 | ||||
Author | Larry V. Benson, USGS | ||||
Permission (Reusing this file) |
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10 May 2011
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:21, 25 April 2014 | 3,500 × 2,474 (1.44 MB) | H-stt | {{Information |Description= Winnemucca Lake, NV, USA. Petroglyphs were carved into the tufa structures by prehistoric Native Americans. Radiocarbon dating of tufa laysrs covering the petroglyphs in 2013 showed these to be the oldest known petroglyphs i... |
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Camera model | COOLPIX P90 |
Exposure time | 10/2,883 sec (0.0034686090877558) |
F-number | f/5.6 |
ISO speed rating | 64 |
Date and time of data generation | 11:17, 10 May 2011 |
Lens focal length | 8.2 mm |
Width | 3,500 px |
Height | 2,474 px |
Bits per component |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 500 dpi |
Vertical resolution | 500 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS4 Windows |
File change date and time | 12:08, 23 April 2014 |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 11:17, 10 May 2011 |
Meaning of each component |
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Image compression mode | 2 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 46 mm |
Scene capture type | Landscape |
Scene control | None |
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Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Supported Flashpix version | 1 |
Image width | 3,500 px |
Image height | 2,474 px |
Unique ID of original document | uuid:faf5bdd5-ba3d-11da-ad31-d33d75182f1b |
Date metadata was last modified | 06:08, 23 April 2014 |
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