File:Fossiliferous sandstone (Allensville Member, Logan Formation, Lower Mississippian; Sugar Loaf Hill, Granville, Ohio, USA) 1 (46849499141).jpg
![File:Fossiliferous sandstone (Allensville Member, Logan Formation, Lower Mississippian; Sugar Loaf Hill, Granville, Ohio, USA) 1 (46849499141).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/09/Fossiliferous_sandstone_%28Allensville_Member%2C_Logan_Formation%2C_Lower_Mississippian%3B_Sugar_Loaf_Hill%2C_Granville%2C_Ohio%2C_USA%29_1_%2846849499141%29.jpg/754px-Fossiliferous_sandstone_%28Allensville_Member%2C_Logan_Formation%2C_Lower_Mississippian%3B_Sugar_Loaf_Hill%2C_Granville%2C_Ohio%2C_USA%29_1_%2846849499141%29.jpg?20191010022343)
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[edit]DescriptionFossiliferous sandstone (Allensville Member, Logan Formation, Lower Mississippian; Sugar Loaf Hill, Granville, Ohio, USA) 1 (46849499141).jpg |
Sandstone from the Mississippian of Ohio, USA. (~4.7 centimeters across at its widest) The Allensville Member is one of four stratigraphic units in the Mississippian-aged, siliciclastics-dominated Logan Formation of eastern Ohio. Ascending from the base, they are the Berne Conglomerate Member, the Byer Sandstone Member, the Allensville Member, and the Vinton Member. The Allensville Member is a thin, coarse-grained interval that is reported to be conglomeratic. Very few localities still exist. As of 2019, I have seen this unit at three sites. The sample seen here is from an Allensville locality I have not yet visited. The sample consists of quartzose sandstone having a nearly bimodal grain distribution. The larger, more visible grains are coarse and very coarse sand. The finer-grained material appears to be very fine to fine sand. The coarse-grained sand is angular to subangular to subrounded. Two crinoid stem columnals are present on this surface (one is complete - the circular disc-like structure; the other is a partial and subtle). The coloration is from iron oxide. Stratigraphy: float derived from the Allensville Member, Logan Formation, Waverly Group, Osagean Stage, upper Lower Mississippian Locality: loose talus from summit of Sugar Loaf Hill in the town of Granville, Licking County, east-central Ohio, USA (vicinity of 40° 04’ 02.42” North latitude, 82° 31’ 34.06” West longitude) |
Date | |
Source | Fossiliferous sandstone (Allensville Member, Logan Formation, Lower Mississippian; Sugar Loaf Hill, Granville, Ohio, USA) 1 |
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@N05/46849499141 (archive). It was reviewed on 10 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
10 October 2019
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current | 02:23, 10 October 2019 | ![]() | 2,169 × 1,724 (2.35 MB) | Ser Amantio di Nicolao (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 | 1/60 sec (0.016666666666667) |
F-number | f/11 |
ISO speed rating | 80 |
Date and time of data generation | 17:33, 22 January 2019 |
Lens focal length | 11.614 mm |
Image title | |
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 | 01:01, 23 January 2019 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 17:33, 22 January 2019 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.90625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
Supported Flashpix version | 1 |
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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 | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 20:01, 22 January 2019 |
Unique ID of original document | 4036AA9E58A35DF0730BD7760DEB5FB7 |
IIM version | 29,736 |