File:Composite hydrothermal vein (Emma Vein, 62-66 Ma; Butte, Montana, USA) 20.jpg
Original file (3,610 × 1,596 pixels, file size: 4.26 MB, MIME type: image/jpeg)
Captions
Summary[edit]
DescriptionComposite hydrothermal vein (Emma Vein, 62-66 Ma; Butte, Montana, USA) 20.jpg |
English: The Emma Vein is a famous unit in the geology of Butte, Montana. The area’s country rocks are part of the Butte Quartz Monzonite (BQM), a Late Cretaceous-aged igneous intrusion that dates to 76 million years. The BQM is intruded by numerous hydrothermal veins that date to the latest Cretaceous-earliest Tertiary (~62 to 66 million years). Veins range from very thin to thick and are often composed of economically-significant minerals. The veins have been extensively mined, starting in the 1800s.
At currently-existing outcrops, the Emma Vein is a 17 to 20 feet wide composite hydrothermal vein that is dominated by quartz, rusty-colored to red-colored iron oxide, and blackish manganese oxide. In the subsurface, the Emma Vein was reported to have chalcopyrite (CuFeS2, copper iron sulfide) and sphalerite (ZnS, zinc sulfide). At the eastern end of its subsurface occurrence, the Emma Vein was 100 feet wide and composed of nearly pure rhodochrosite (!). Geologic unit: Emma Vein, Maastrichtian Stage to Danian Stage, latest Cretaceous to Early Paleocene, ~62-66 Ma Locality: outcrop on the western side of the Gold Street-Jackson Street intersection in the town of Butte, Silver Bow County, western Montana, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/51038311291/ |
Author | James St. John |
Licensing[edit]
- 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@N05/51038311291. It was reviewed on 19 March 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
19 March 2021
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 00:13, 19 March 2021 | 3,610 × 1,596 (4.26 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51038311291/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
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.
Camera manufacturer | EASTMAN KODAK COMPANY |
---|---|
Camera model | KODAK EASYSHARE Z1012 IS Digital Camera |
Exposure time | 1/1,000 sec (0.001) |
F-number | f/4 |
ISO speed rating | 64 |
Date and time of data generation | 15:44, 10 August 2010 |
Lens focal length | 6.75 mm |
Width | 3,648 px |
Height | 2,736 px |
Bits per component |
|
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 480 dpi |
Vertical resolution | 480 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 02:49, 14 March 2021 |
Y and C positioning | Centered |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 15:44, 10 August 2010 |
Meaning of each component |
|
APEX shutter speed | 10 |
APEX aperture | 4 |
APEX brightness | 1 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, auto mode |
DateTimeOriginal subseconds | 69 |
Supported Flashpix version | 1 |
Color space | sRGB |
Exposure index | 64 |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Custom process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 37 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Unique ID of original document | 03F219AF8273D46653581AE996675C93 |
Date metadata was last modified | 20:49, 13 March 2021 |
Keywords | Butte Montana day 1 and 2 |
IIM version | 24,576 |