File:Granite pebble (clast in a Pleistocene lacustrine deposit; west of Givens, Ohio, USA).jpg
Original file (2,005 × 1,849 pixels, file size: 2.44 MB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionGranite pebble (clast in a Pleistocene lacustrine deposit; west of Givens, Ohio, USA).jpg |
English: This large pebble (~47 millimeters across) is from a Pleistocene-aged, nonlithified, pebbly silt unit in southern Ohio. The sediments are part of a lake deposit formed in the Teays River Valley as glacial ice blocked the flow of river water during the last Ice Age. The Teays River was a major watercourse before the Pleistocene, with headwaters in Virginia and Kentucky, and a main branch running generally northwestward through West Virginia and Ohio, then westward through Indiana and Illinois. The path of the Teays River is readily seen on satellite imagery of southern Ohio - it ran through Scioto County, Jackson County, Pike County, and Ross County. North from there, the Teays River's path is obscured by a covering of glacial drift.
The rock itself is granite, a common felsic, phaneritic, intrusive igneous rock that is dominated by quartz and potassium feldspar. It is very likely Proterozoic in age and derived from Canadian bedrock - probably Ontario. Stratigraphy: apparently the Minford Silt, Lower or Middle Pleistocene, >780 ka (older than the last magnetic reversal) Locality: roadcut along the Appalachian Highway between Tipton Lane and Germany Road, west of the town of Givens, eastern Pike County, southern Ohio, USA See info. at: en.wikipedia.org/wiki/Teays_River |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/50980678238/ |
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@N05/50980678238. It was reviewed on 26 February 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
26 February 2021
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:41, 26 February 2021 | 2,005 × 1,849 (2.44 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50980678238/ with UploadWizard |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/9 |
ISO speed rating | 80 |
Date and time of data generation | 22:36, 25 February 2021 |
Lens focal length | 8.295 mm |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 23:44, 25 February 2021 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 22:36, 25 February 2021 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.34375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 18:44, 25 February 2021 |
Unique ID of original document | 1B72B4712223F55F3BA97270A69A3704 |