File:Slickenlined fault surface (Roberts Mountain Thrust Fault; near Cortez Gold Mine, Nevada, USA).jpg
![File:Slickenlined fault surface (Roberts Mountain Thrust Fault; near Cortez Gold Mine, Nevada, USA).jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/1/17/Slickenlined_fault_surface_%28Roberts_Mountain_Thrust_Fault%3B_near_Cortez_Gold_Mine%2C_Nevada%2C_USA%29.jpg/731px-Slickenlined_fault_surface_%28Roberts_Mountain_Thrust_Fault%3B_near_Cortez_Gold_Mine%2C_Nevada%2C_USA%29.jpg)
Original file (3,163 × 2,595 pixels, file size: 5.69 MB, MIME type: image/jpeg)
![]() | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionSlickenlined fault surface (Roberts Mountain Thrust Fault; near Cortez Gold Mine, Nevada, USA).jpg |
English: Fault slickenlined rock from Nevada, USA. (public display, Geology Department, Wittenberg University, Springfield, Ohio, USA)
The linear features seen on this rock formed in a fault zone. Faults are fractures in rocks along which differential displacement has occurred. Dip-slip faults are those involving movement of rocks in non-horizontal directions. Strike-slip faults involve movement of rocks in horizontal directions. The two common types of dip-slip faults are normal faults and reverse faults. Fault movement results in polishing and striating of the immediately adjacent wall rocks. Fault zones can have breccias, fault gouges, slickenlined mineral crusts, or striated to polished surfaces. This rock consists of an actual fault surface from the famous Roberts Mountain Thrust Fault in western America. Thrust faults are low-angle reverse faults and are formed by compressional stress. The Roberts Mountain Thrust was active during the Antler Orogeny, a Middle Devonian to Early Mississippian mountain building event centered in Nevada. This tectonic event involved emplacement of a large, internally-deformed thrust sheet onto the Cordilleran margin of the Laurentian craton. The thrust sheet is called the Roberts Mountain Allochthon - it was thrust from west to east. It is a complex package of imbricated thrust sheets containing rocks of Cambrian to Devonian age. The rocks are typical of a deepwater assemblage - radiolarian cherts, graptolitic shales, turbidites, and pillow basalts. They were deposited in a deep, narrow basin close to the former western edge of the continent, which used to be a passive margin. Thrusting during the Antler Orogeny was accompanied by crustal flexure and the development of a foreland basin. The Antler Foreland Basin is filled with Upper Devonian to Mississippian siliciclastic sedimentary rocks. The Antler Orogeny itself was caused by tectonic collision between a volcanic island arc, the Klamath Arc, and the Cordilleran margin of Laurentia. The Klamath Arc had been offshore - it was a series of volcanic islands formed by subduction, similar to modern-day Japan or Indonesia. Locality: Roberts Mountain Thrust Fault, unrecorded/undisclosed site near the Cortez Gold Mine, north-central Nevada, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/41256583604/ |
Author | James St. John |
Licensing
![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
![]() |
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/41256583604. It was reviewed on 15 November 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
15 November 2020
Captions
Items portrayed in this file
depicts
some value
24 March 2018
0.01666666666666666666 second
11
11.614 millimetre
image/jpeg
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 11:48, 15 November 2020 | ![]() | 3,163 × 2,595 (5.69 MB) | Ser Amantio di Nicolao | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/41256583604/ with UploadWizard |
File usage
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | Canon |
---|---|
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 | 13:19, 24 March 2018 |
Lens focal length | 11.614 mm |
Image title | |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
|
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 | 10:12, 8 May 2018 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 13:19, 24 March 2018 |
Meaning of each component |
|
Image compression mode | 3 |
Shutter speed | 5.90625 |
APEX aperture | 6.90625 |
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 |
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 | 06:12, 8 May 2018 |
Unique ID of original document | 625ABE72ED99606BC86FB9B722E3ABB6 |
IIM version | 1 |