The Kapp Toscana Group is a

geologic group In geology, a group is a lithostratigraphic unit consisting of a series of related formations that have been classified together to form a group. Formations are the fundamental unit of stratigraphy. Groups may sometimes be combined into superg ...

Svalbard Svalbard ( , ), previously known as Spitsbergen or Spitzbergen, is a Norway, Norwegian archipelago that lies at the convergence of the Arctic Ocean with the Atlantic Ocean. North of continental Europe, mainland Europe, it lies about midway be ...

and

Jan Mayen Jan Mayen () is a Norway, Norwegian volcanic island in the Arctic Ocean with no permanent population. It is long (southwest-northeast) and in area, partly covered by glaciers (an area of around the Beerenberg volcano). It has two parts: la ...

in the

Barents Sea The Barents Sea ( , also ; , ; ) is a marginal sea of the Arctic Ocean, located off the northern coasts of Norway and Russia and divided between Norwegian and Russian territorial waters.World Wildlife Fund, 2008. It was known earlier among Russi ...

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

Description

The group dates back to the Late

Triassic The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...

, and comprises the rock formations of

Tschermakfjellet Tschermakfjellet is a mountain in Dickson Land at Spitsbergen, Svalbard. It has a height of 422 m.a.s.l., and is located between the valley of Sauriedalen and Kongressfjellet. The mountain is named after Austrian mineralogist Gustav Tschermak von ...

, De Geerdalen and Wilhelmøya. The group is named from the headland of Kapp Toscana at the southern side of Van Keulenfjorden in

Wedel Jarlsberg Land Wedel Jarlsberg Land is the land area between Van Keulenfjorden and Hornsund on the southwestern part of Spitsbergen, Svalbard. The area is largely covered with glaciers, and is completely within the Sør-Spitsbergen National Park Sør-Spi ...

Spitsbergen Spitsbergen (; formerly known as West Spitsbergen; Norwegian language, Norwegian: ''Vest Spitsbergen'' or ''Vestspitsbergen'' , also sometimes spelled Spitzbergen) is the largest and the only permanently populated island of the Svalbard archipel ...

, Svalbard. The thickness of the group varies from of

deltaic A river delta is a landform, archetypically triangular, created by the deposition of the sediments that are carried by the waters of a river, where the river merges with a body of slow-moving water or with a body of stagnant water. The creati ...

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny f ...

s with interbedded

sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...

s. The Kapp Toscana Group was initially defined as a formation, but has later become a group. The type section was taken from Kapp Toscana at Van Keulenfjorden, where the thickness of the unit was , while its two members Tschermakfjellet and De Geerdalen had type sections from Botneheia.Buchan 1965: pp. 24–26

References

Bibliography

* * Geologic groups of Europe Geology of Norway Triassic System of Europe Triassic Norway Ladinian Stage Rhaetian Stage Shale groups Sandstone groups Deltaic deposits Geology of Svalbard Jan Mayen {{Svalbard-geo-stub