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Geological Formation

Alum Shale

Named Rock Formations and Groups

The Alum Shale is a black, organic rich shale formation exposed across parts of Sweden, spanning the Cambrian through Ordovician periods and locally more than five hundred million years old at its base, historically mined for alum and, more recently, for uranium and oil shale, while also preserving trilobites and other early marine fossils, including the well known Orsten-type deposits within it that preserve microscopic animals in exceptional three dimensional detail. The formation is one of the most extensively studied Paleozoic rock sequences in Scandinavia.

Connections

Associated With

Cambrian, Eras
Source Alum Shale Formation (Wikipedia)
Ordovician, Eras
Source Alum Shale Formation (Wikipedia)
Shale, Materials
Source Alum Shale Formation (Wikipedia)

Caused By

Sedimentation, Processes
Source Alum Shale Formation (Wikipedia)

In Discipline

Stratigraphy, Disciplines
Source Alum Shale Formation (Wikipedia)
In the Other Atlases

Found In

Sweden

Also in Geography Atlas: where this subject is found.

Sources
Alum Shale Formation (Wikipedia)
  • Associated With: Cambrian, Lead paragraph
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • Associated With: Ordovician, Lead paragraph
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • Associated With: Shale, Lead paragraph
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • Associated With: Cambrian, Lead, age Cambrian
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • Associated With: Ordovician, Lead, age Ordovician
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • Associated With: Shale, Lead, rock Shale
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • In Discipline: Stratigraphy, Lead section (in-discipline Stratigraphy)
    The Alum Shale Formation is a rock formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in Scandinavia, but also some parts of Estonia and Finland.
  • Caused By: Sedimentation, Article text
    Subsequently, Ordovician limestones and shales sequences were deposited until the Silurian.
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