File:Paleosol (Mill Knob Member, Slade Formation, Upper Mississippian; Clack Mountain Road Outcrop, south of Morehead, Kentucky, USA) 9 (44459400300).jpg
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Summary
[edit]DescriptionPaleosol (Mill Knob Member, Slade Formation, Upper Mississippian; Clack Mountain Road Outcrop, south of Morehead, Kentucky, USA) 9 (44459400300).jpg |
Paleosol in the Mississippian of Kentucky, USA. This outcrop is part of the Upper Mississippian Slade Formation in Kentucky. The unit was formerly known as the Newman Limestone ("They always change the names to protect the innocent!"). Slade Formation limestones are shallow ocean deposits. This section has numerous paleosol horizons (= ancient soils). The reddish & greenish-gray material in the photo is a paleosol (= soil 4 of Ettensohn & Lierman, 1992). Remnants of gray limestone are still present. From Ettensohn & Lierman (1992): "Soil 4 consists of 1.5 to 1.8 meters (5 to 6 feet) of residual terra-rossa claystone containing Mill Knob micrite. One band of Warix Run arenaceous calcarenite is also present near the base. Layers of clasts and claystone undulate throughout the deposit suggesting that the calcilutite layers had been warped into caliche pseudo-anticlines ("tepees") before dissolution. Blocky peds and stress cutans (slickensides) are present throughout the unit. The parent material or C horizon for this soil is almost completely lacking, except for the isolated clasts, having been nearly destroyed by solution. Nonetheless, the relict clasts indicate that the parent material was probably a thin-bedded Mill Knob calcilutite or micrite." Stratigraphy: Warix Run Member over Mill Knob Member, Slade Formation, Upper Mississippian Locality: roadcut next to the Clack Mountain Road-Route 519 intersection, south of Morehead, Kentucky, USA (vicinity of 38° 07’ 41.87” North latitude, 83° 24’ 47.04” West longitude) Reference cited: Ettensohn & Lierman (1992) - Stop 17 - Chesterian, humid-type residual paleosols from the Slade Formation. in: Paleoclimate controls on Carboniferous sedimentation and cyclic stratigraphy in the Appalachian Basin. United States Geological Survey Open File Report 92-546: 85-87. |
Date | |
Source | Paleosol (Mill Knob Member, Slade Formation, Upper Mississippian; Clack Mountain Road Outcrop, south of Morehead, Kentucky, USA) 9 |
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@N05/44459400300 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 December 2019
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:24, 7 December 2019 | 4,000 × 3,000 (6.01 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 | 1/160 sec (0.00625) |
F-number | f/3.5 |
ISO speed rating | 80 |
Date and time of data generation | 12:41, 11 March 2018 |
Lens focal length | 9.681 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 | 12:15, 11 December 2018 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 12:41, 11 March 2018 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 7.3125 |
APEX aperture | 3.625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.625 APEX (f/3.51) |
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 |
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 | Landscape |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 07:15, 11 December 2018 |
Unique ID of original document | 024A46260F82D8AE73008FC7DD8C19F0 |