The Särna alkaline complex is a group of
intrusive igneous rock
Igneous rock ( ), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava.
The magma can be derived from partial ...
s in
Dalarna
Dalarna (; ), also referred to by the English exonyms Dalecarlia and the Dales, is a (historical province) in central Sweden.
Dalarna adjoins Härjedalen, Hälsingland, Gästrikland, Västmanland and Värmland. It is also bordered by Nor ...
, Sweden.
Emplacement and cooling of
magma
Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma (sometimes colloquially but incorrectly referred to as ''lava'') is found beneath the surface of the Earth, and evidence of magmatism has also ...
into rock occurred during the
Carboniferous
The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...
Period
Period may refer to:
Common uses
* Period (punctuation)
* Era, a length or span of time
*Menstruation, commonly referred to as a "period"
Arts, entertainment, and media
* Period (music), a concept in musical composition
* Periodic sentence (o ...
. The complex is aligned with the
Oslo Rift, which formed around the same time; it is thought that they are related.
See also
*
Alnö Complex The Alnö Complex or Alnö Alkaline Complex is a group of carbonatite and Alkaline rocks, alkaline igneous rocks in Alnö in the eastern coast of central Sweden that intruded the basement (geology), basement in Ediacaran, Late Ediacaran times. The A ...
*
Fen Complex
The Fen Complex () in Nome, Telemark, Norway is a region noted for an unusual suite of igneous rocks. Several varieties of carbonatite are present in the area as well as lamprophyre, ijolite and other highly alkalic rocks. It is the type locality ...
*
Kola Alkaline Province
*
Norra Kärr Norra Kärr or Norra Kärr Alkaline Complex is an intrusive complex cropping out at the boundary between Östergötland and Småland, Sweden. The complex is chiefly made up of peralkaline nepheline syenite and is rich in exotic minerals. Rocks of ...
References
{{Geology of Fennoscandia
Geology of Sweden
Paleozoic Sweden
Carboniferous Europe
Carboniferous geology
Geography of Dalarna County