File:Fluvial deposits (Holocene; Roaring Run, Warren County, Ohio, USA) 3 (44782452564).jpg
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Summary
[edit]DescriptionFluvial deposits (Holocene; Roaring Run, Warren County, Ohio, USA) 3 (44782452564).jpg |
Fluvial deposits are sedimentary layers laid down in fluvial systems - rivers and streams. In the channel facies, deposits are usually poorly sorted and cross-bedded. In the ancient rock record, channel deposits are typically sandstones and conglomerates. In the floodplain facies, deposits are usually fine-grained - in other words, mud. With burial and lithification, floodplain deposits become horizontally layered shales, maybe with mudcracks and occasional plant fossils, representing growth between flood events. Seen here is a Holocene fluvial deposit alongside a modern stream channel in southwestern Ohio. The deposit is dominated by platy limestone slabs, which are derived from the local bedrock - the famous Cincinnatian Series of the tristate area of Ohio-Kentucky-Indiana. Rocks in the Cincinnatian were deposited in relatively shallow marine facies during the Late Ordovician. The Cincinnatian succession is mostly interbedded fossiliferous limestones and shales. Most of the limestones are event beds (= tempestites), deposited during ancient storms. Locality: Roaring Run, Caesar Creek Lake State Park, northeastern Warren County, southwestern Ohio, USA |
Date | |
Source | Fluvial deposits (Holocene; Roaring Run, Warren County, Ohio, USA) 3 |
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@N05/44782452564 (archive). It was reviewed on 7 November 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 November 2018
James St. John
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current | 00:30, 7 November 2018 | 4,000 × 3,000 (7.51 MB) | Lu Brito (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/3.2 |
ISO speed rating | 80 |
Date and time of data generation | 14:56, 5 May 2018 |
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 13.0 (Macintosh) |
File change date and time | 21:43, 22 October 2018 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 14:56, 5 May 2018 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 4.90625 |
APEX aperture | 3.34375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
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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 | Landscape |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 17:43, 22 October 2018 |
Unique ID of original document | 7627F9FE3727E9F48A27FE92F99B4D3E |
IIM version | 29,736 |