File:Layered Gabbro of the Duluth Complex in Minnesota USA 01.jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels | 4,000 × 3,000 pixels.
Original file (4,000 × 3,000 pixels, file size: 5.8 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]
| Description |
English: Layered gabbros of the troctolitic series in the Duluth Complex at a roadcut next to parking lot for the Thomson Hill Information Center, Skyline Parkway, northern side of Interstate 35, just west of the Route 2-Interstate 35 intersection, west of Duluth, Minnesota, USA. (Geology hammer for scale). The gabbro formed 1099 million years ago. This is gabbro, a mafic, phaneritic, intrusive igneous rock composed principally of plagioclase feldspar and pyroxene. This rock is part of the widespread Duluth Complex, a ~1.1 billion year old suite of igneous rocks in northeastern Minnesota that is associated with volcanism in the Lake Superior segment of the ancient Mid-Continent Rift System. Layering is not commonly seen in intrusive igneous rocks. These layered gabbros are the result of repeated episodes of crystal settling in a magma chamber. |
| Date | |
| Source | https://www.flickr.com/photos/jsjgeology/21454438859/ |
| Author | James St. John (https://www.flickr.com/people/jsjgeology/) |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
|---|
Licensing
[edit]
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/21454438859 (archive). It was reviewed on 25 May 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- 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.
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:23, 25 May 2018 | | 4,000 × 3,000 (5.8 MB) | FlickreviewR 2 (talk | contribs) | Replacing image by its original image from Flickr |
| 19:22, 25 May 2018 |  | 1,024 × 768 (442 KB) | GeoWriter (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
