File:Tourmaline-feldspar-quartz (Erongo Granite, Early Cretaceous, 144 Ma; Lions Head, Erongo Mountains, Namibia) 1 (25807671150).jpg
Size of this preview: 579 × 600 pixels. Other resolutions: 232 × 240 pixels | 463 × 480 pixels | 741 × 768 pixels | 989 × 1,024 pixels | 1,507 × 1,561 pixels.
Original file (1,507 × 1,561 pixels, file size: 1.09 MB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary edit
_1_(25807671150).jpg&action=edit§ion=1){kind=link}
| Description |
Tourmaline-feldspar-quartz from the Cretaceous of Namibia. (~2.2 cm across at its widest) Black = schorl tourmaline Light-colored material - microcline feldspar and quartz This is a schorl tourmaline-rich sample from the Erongo Granite of Namibia. The Erongo Granite is a subvolcanic ring dike granite. It represents magma that cooled underneath an ancient, now-deeply eroded volcano. Geologic unit: Erongo Granite, Erongo Complex (Erongo Volcanic Complex), Damara Orogenic Zone (Damara Belt), ~earliest Cretaceous, 144 Ma Locality: unrecorded site at Lions Head (= southern Erongo Complex), 30 to 40 km northwest of the town of Karibib, Erongo Mountains, Karibib District, Erongo Region, northwest-central Namibia |
| Date | |
| Source | Tourmaline-feldspar-quartz (Erongo Granite, Early Cretaceous, 144 Ma; Lions Head, Erongo Mountains, Namibia) 1 |
| Author | James St. John |
Licensing edit
_1_(25807671150).jpg&action=edit§ion=2){kind=link}
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.
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/25807671150 (archive). It was reviewed on 1 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:58, 1 December 2019 | | 1,507 × 1,561 (1.09 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
_1_(25807671150).jpg&oldid=634502302){kind=link}