File:Basalt cobble shoreline (Yaquina Head, Oregon, USA) 32.jpg
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Summary
[edit]DescriptionBasalt cobble shoreline (Yaquina Head, Oregon, USA) 32.jpg |
English: Sediments are any loose grains at the Earth's surface. Names are given to different size classes of sediments. The finest-grained sediments are clay (less than 1 / 256 of a millimeter). Coarser-grained than clay are silt (1 /256 to 1 / 16 of a millimeter) and sand (1 / 16 to 2 millimeters in size). Sediments larger than sand are called gravel. Small gravel is referred to as "granules" (2 to 4 millimeters in size). Larger gravel are pebbles (4 to 64 millimeters), cobbles (64 to 256 millimeters), and boulders (larger than 256 millimeters).
Many non-rocky marine shorelines are dominated by sand-sized sediments. Seen here is a gravelly marine shoreline at Yaquina Head, Oregon. Most of the clasts are cobbles, but boulders are also present. The rocks have eroded from the Ginkgo Basalt, one of many lava flows in the Miocene-aged Columbia River Flood Basalt. Flood basalts are vast outpourings of lava from one or more large fractures in the crust. This rare type of volcanism is not occurring on Earth at present, but ancient flood basalt provinces that can be examined - for example, the latest Cretaceous-aged Deccan Traps of India and the latest Permian Siberian Traps of Russia. Flood lavas are also known on Mercury, Venus, and the Moon. Locality: marine shoreline on the southern side of Yaquina Head, coastal Oregon, USA Info. at: www.usgs.gov/observatories/cvo/columbia-river-basalt-grou... |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/53275916139/ |
Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/53275916139. It was reviewed on 25 October 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
25 October 2023
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current | 17:32, 25 October 2023 | 4,282 × 2,552 (8.14 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53275916139/ with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D90 |
Exposure time | 1/250 sec (0.004) |
F-number | f/8 |
ISO speed rating | 400 |
Date and time of data generation | 14:24, 3 August 2012 |
Lens focal length | 18 mm |
Width | 4,288 px |
Height | 2,848 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 20.0 (Macintosh) |
File change date and time | 20:24, 15 October 2023 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 14:24, 3 August 2012 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 7.965784 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 3.6 APEX (f/3.48) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
DateTime subseconds | 00 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
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 | 1 |
Focal length in 35 mm film | 27 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS tag version | 2.2.0.0 |
Serial number of camera | 3562538 |
Lens used | TAMRON AF 18-270mm F3.5-6.3 Di II VC PZD B008N |
Date metadata was last modified | 16:24, 15 October 2023 |
Unique ID of original document | ABD3A587B0E21BE813358F01C1033992 |