File:Chert in limestone (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2 (42418583061).jpg
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Summary
[edit]DescriptionChert in limestone (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2 (42418583061).jpg |
Chert in limestone in the Mississippian of Kentucky, USA. This rock is in the Fort Payne Formation of southern Kentucky. The Fort Payne is a richly fossiliferous limestone-and-shale succession that is dominated by crinoids. The grayish-colored material in the photo is chert, a cryptocrystalline, quartzose sedimentary rock. It is secondary - the original rock was fossiliferous limestone, but was partially replaced by quartz in the form of chert. Stratigraphy: Fort Payne Formation, Osagean Stage/Series, upper Lower Mississippian Locality: Burkesville North Outcrop - Route 61 roadcut at milepost 23, way north of Burkesville, Kentucky, USA. (36° 54’ 08.08” North latitude, 85° 25’ 56.19” West longitude) |
Date | |
Source | Chert in limestone (Fort Payne Formation, Lower Mississippian; Rt. 61 roadcut, north of Burkesville, Kentucky, USA) 2 |
Author | James St. John |
Licensing
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/42418583061 (archive). It was reviewed on 12 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
12 October 2019
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:06, 12 October 2019 | 4,000 × 3,000 (5.83 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/250 sec (0.004) |
F-number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 10:49, 14 March 2018 |
Lens focal length | 6.2 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 | 22:33, 25 May 2018 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 10:49, 14 March 2018 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 7.96875 |
APEX aperture | 6 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, auto 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 | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 18:33, 25 May 2018 |
Unique ID of original document | 670DC9354A367A29D51722550F282000 |
IIM version | 32,767 |