The Central Eastern Alps (German: Zentralalpen or Zentrale Ostalpen), also referred to as Austrian Central Alps (German: Österreichische Zentralalpen) or just Central Alps,[1] comprise the main chain of the Eastern Alps in Austria and the adjacent regions of Switzerland, Liechtenstein, Italy and Slovenia. South of them is the Southern Limestone Alps.
The term "Central Alps" is very common in the Geography of Austria as one of the seven major landscape regions of the country. "Central Eastern Alps" is usually used in connection with the Alpine Club classification of the Eastern Alps (Alpenvereinseinteilung, AVE). The Central Alps form the eastern part of the Alpine divide, its central chain of mountains, as well as those ranges that extend or accompany it to the north and south.
The highest mountain in the Austrian Central Alps is Grossglockner at 3,798 metres (12,461 ft).
Location
The Central Alps have the highest peaks of the Eastern Alps, and are located between the Northern Limestone Alps and the Southern Limestone Alps, from which they differ in geological composition.
The Central and Northern Alps are separated by the Northern Longitudinal Trough (nördliche Längstalfurche), the line Klostertal–Arlberg–Inn Valley–Salzach Valley as far as Lake Zell–Wagrain Heights–Upper Enns Valley–Schober Pass–Mürz Valley Alps–Semmering–southern Vienna Basin.[2] The Central Alps and Southern Alps are separated from one another by the Southern Longitudinal Valley (südlichen Längstalzug) Puster Valley (Rienz Valle–Toblach Field–upper Drava (Drau) Valley)–Drava Valley–Klagenfurt Basin–Meža (Mieß), or the Periadriatic Seam, which is not entirely identical with the Southern Longitudinal Trough.
Geomorphology
The range has the highest summits in the Eastern Alps and is the most glaciated. In the transition zone between the East and West Alps, its peaks clearly dominate the region to the west (Piz d'Err, Piz Roseg). On the perimeter, however, there are also less high, often less rugged mountain chains, like the Gurktal Alps and the eastern foothills.
The Austroalpine submerges itself at the eastern edge of the Alps under the Tertiary sediments of the Alpine Foreland in the east and the Pannonian Basin. This fracture zone exhibits active volcanism (e.g. in the Styrian thermal region).
The Central Eastern Alps also comprise the following ranges of the West Eastern Alps according to AVE classification, which geologically belong to the Southern Alps and are also subsumed under the Western Limestone Alps division.:
^The Kitzbühel Alps and the adjacent Salzburg Slate Alps as part of the Greywacke zone are either counted as part of the Northern Limestone Alps or the Central Alps – geologically they form the bedrock of the Limestone Alps, and the slip zone, on which the latter were thrust northwards
^The Bergamasque Alps are – geologically and petrologically – part of the Southern Limestone Alps, and thus the Southern Alps
The Ortler Alps as well as the Sobretta-Gavia Group are also sometimes classified with the Central Alps, because they lie north of the geological fault of the Periadriatic Seam; in a general regional geographic sense, however, they are seen as part of the Southern Limestone Alps, because they are found south of the longitudinal trough Veltlin (Adda)–Vintschgau (Etsch).[3] Also in terms of rock, the Ortler main crest is part of the Southern Limestone Alps.