Arvidsjaur porphyry
id:
arvidsjaur-porphyry-251-11046794
title:
Arvidsjaur porphyry
text:
Arvidsjaur porphyry is a group of igneous rocks of intermediate to felsic composition found near Arvidsjaur in northern Sweden. The Arvidsjaur Porphyry formed 1,870 to 1,880 million years ago during the Paleoproterozoic Era. Most of the porphyry have well-preserved primary structures and textures which have allowed to interpret much of Arvidsjaur porphyry to be ignimbrites. While much of the porphyryry have rhyolite compositions some parts that are interpreted as lava flows are made up of andesi
brand slug:
wiki
category slug:
encyclopedia
description:
Igneous rocks found in northernmost Sweden
original url:
https://en.wikipedia.org/wiki/Arvidsjaur_porphyry
date created:
date modified:
2021-01-09T19:26:59Z
main entity:
{"identifier":"Q85743237","url":"https://www.wikidata.org/entity/Q85743237"}
image:
fields total:
13
integrity:
14