File:Tossa Plana de Lles granodiorite and quartz.jpg

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Captions

Captions

The summit of Tossa Plan de Lles (2905 metres, on the Spain-Andorra frontier), seen from the west.

Summary

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Description
English: Tossa Plana de Lles (as it is known in Catalonia), or Pic de la Portelleta (as it is known in Andorra), lies in the Mont-Louis - Andorra batholith. That is a vast structure of plutonic rocks, of which granodiorite (as seen in the cliffs in this image) is the main constituent. These rocks formed around 300 million years ago (at the end of the Carboniferous period), during the Hercynian (or Variscan) orogeny (mountain-building period). The summit of Tossa Plana de Lles itself lies on a quartz vein (see inset), which may explain why its altitude is slightly greater than that of nearby peaks, all of which are below 2900 metres.
Date
Source Own work
Author Alan Mattingly
Camera location42° 22′ 13″ N, 1° 44′ 07″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Date/TimeThumbnailDimensionsUserComment
current15:47, 2 September 2023Thumbnail for version as of 15:47, 2 September 20234,608 × 3,456 (4.39 MB)Alan Mattingly (talk | contribs)Uploaded own work with UploadWizard

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