File:Seismite interval (Portwood Member, New Albany Shale, Middle Devonian; Waco roadcut, Madison County, Kentucky, USA).jpg
![File:Seismite interval (Portwood Member, New Albany Shale, Middle Devonian; Waco roadcut, Madison County, Kentucky, USA).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Seismite_interval_%28Portwood_Member%2C_New_Albany_Shale%2C_Middle_Devonian%3B_Waco_roadcut%2C_Madison_County%2C_Kentucky%2C_USA%29.jpg/800px-Seismite_interval_%28Portwood_Member%2C_New_Albany_Shale%2C_Middle_Devonian%3B_Waco_roadcut%2C_Madison_County%2C_Kentucky%2C_USA%29.jpg?20230511131429)
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[edit]DescriptionSeismite interval (Portwood Member, New Albany Shale, Middle Devonian; Waco roadcut, Madison County, Kentucky, USA).jpg |
English: Seismite interval in the Devonian of Kentucky, USA.
The rocks in this exposure are deformed beds of the Portwood Member, an offshore marine succession of fine-grained siliciclastics at the base of the New Albany Shale / Ohio Shale. Undisturbed bedding occurs above and below the deformed interval. These chaotic beds have been interpreted as seismites - probably more than one episode of seismicity produced them. The ancient earthquakes that deformed these sediments were related to Acadian Orogeny tectonics, and possibly related to known basement faults in this area. Stratigraphy: lower Portwood Member of the basal New Albany Shale / Ohio Shale (middle Polygnathus varcus zone, Givetian Stage, upper Middle Devonian) Locality: Waco Cut - roadcut along the northern side of Route 52, ~0.2 miles east of the Route 52-Route 977 intersection at the town of Waco, eastern Madison County, east-central Kentucky, USA (37˚ 44.471’ North latitude, 84˚ 08.566’ West longitude) Info. at: Schieber, J. & R. Lazar (eds.). 2004. Devonian black shales of the eastern U.S. New insights into sedimentology and stratigraphy from the subsurface and outcrops in the Illinois and Appalachian Basins. Field Guide for the 2004 Annual Field Conference of the Great Lakes Section of SEPM. Indiana Geological Survey Open-File Study 04-05. 90 pp. |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/52883156320/ |
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@N05/52883156320. It was reviewed on 11 May 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
11 May 2023
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current | 13:14, 11 May 2023 | ![]() | 1,280 × 960 (1.05 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52883156320/ with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
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Camera manufacturer | OLYMPUS OPTICAL CO.,LTD |
Camera model | C900Z,D400Z |
Exposure time | 1/116 sec (0.0086206896551724) |
F-number | f/3.8 |
ISO speed rating | 100 |
Date and time of data generation | 00:10, 25 September 2004 |
Lens focal length | 9.6 mm |
Width | 1,280 px |
Height | 960 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop Elements 20.0 (Macintosh) |
File change date and time | 03:04, 7 May 2023 |
Y and C positioning | Co-sited |
Exif version | 2.1 |
Date and time of digitizing | 00:10, 25 September 2004 |
Meaning of each component |
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Image compression mode | 2 |
APEX shutter speed | 6.84549 |
APEX aperture | 3.851999 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Date metadata was last modified | 23:04, 6 May 2023 |
Unique ID of original document | 5BD40164B04B6B5D0E21E945BE1E00AC |