Restren:Greenlandite (fuchsite-quartz gneiss) (Eoarchean, 3.8 Ga; Godthabsfjord area or Nuuk area of southwestern Greenland) (14882301487).jpg
Restren wreydhek (773 × 809 piksel, myns an restren: 821 KB, eghen MIME: image/jpeg)
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Restren dhyworth Wikimedia Commons yw hebma. Yma diskwedhys a-woles derivadow dhyworth y folen deskrifans ena. | _(Eoarchean,_3.8_Ga;_Godthabsfjord_area_or_Nuuk_area_of_southwestern_Greenland)_(14882301487).jpg?uselang=kw){kind=small}
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Mos dhe folen an restren war Wikimedia Commons |
Berrskrif
| Deskrifans |
Greenlandite (fuchsite-quartz gneiss) (2.7 cm across at its widest) from the Precambrian of southwestern Greenland. Green = fuchsite; gray = quartz; a few small, scattered pyrite crystals (brassy gold-colored) are also visible. Attractive greenish-colored gneisses in southwestern Greenland that contain the minerals fuchsite (green) and quartz (gray) have been informally called greenlandite. Fuchsite is a chromian muscovite mica (K(Al,Cr)2AlSi3O10(OH,F)2 - potassium chromium hydroxy-fluoro-aluminosilicate); it is typically encountered in schistose rocks. Greenland greenlandite is part of a 3.8 billion year old, highly metamorphosed succession of rocks. These represent the oldest known supracrustal rocks on Earth (the oldest crustal Earth rocks include 4.03 billion year old Acasta Gneiss, 4.28 b.y. rocks from the eastern Hudson Bay area, and 4.45-4.55 b.y. rocks in the subsurface of Baffin Island, Canada). Locality: undisclosed locality in the Godthåbsfjord area or Nuuk area, southwestern Greenland. Age: Eoarchean boundary, 3.8 billion years. |
| Dedhyans | |
| Pennfenten | Greenlandite (fuchsite-quartz gneiss) (Eoarchean, 3.8 Ga; Godthabsfjord area or Nuuk area of southwestern Greenland) |
| Awtour | James St. John |
Leshyans
- Yma'n gwir dhywgh:
- a ranna – a dhasskrifa, lesranna ha treuskorra an ober
- a gemyska – a aswiwa an ober
- Yn-dann an ragselyow a syw:
- askrifans – Res yw dhywgh ri askrifans gwiw, provia kevren dhe'n lecyans, ha meneges mar peu chanjyow gwrys. Hwi a yll gul hemma yn fordh resonus a vynnowgh, mes ny yllir y wul yn fordh a broffo synser an lecyans dh'agas skoodhya po agas devnydh.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/14882301487 (archive). It was reviewed on 2 Kevardhu 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
Istori an restren
Klyckyewgh war dhedhyans/eur rag gweles an folen dell o an termyn na.
| Dedhyans/Eur | Skeusennik | Mynsow | Devnydhyer | Kampol | |
|---|---|---|---|---|---|
| a-lemmyn | 06:18, 2 Kevardhu 2019 | | 773 × 809 (821 KB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
Devnydh an restren
Yma an folen a syw owth usya an restren ma:
_(Eoarchean,_3.8_Ga;_Godthabsfjord_area_or_Nuuk_area_of_southwestern_Greenland)_(14882301487).jpg){kind=link}