Mur origin
| Mur origin | |
|---|---|
 The Mur origin |
|
| location | |
| Country or region | near Muhr im Lungau , Land Salzburg |
| Coordinates | 47 ° 7 ′ 48 " N , 13 ° 20 ′ 50" E |
| height | 1898 m |
| geology | |
| Mountains | Ankogel Group , Hohe Tauern |
| Source type | local karst spring |
| Exit type | Layer source |
| rock | Lime marble |
| Hydrology | |
| River system | Mur (Drava / Danube) |
| Receiving waters | Mur |
Coordinates: 47 ° 7 '48 " N , 13 ° 20' 50" E
The origin of the Mur is a source of the Mur . It is located near Muhr im Lungau in the province of Salzburg .
Location and landscape
The Mur spring is located in the rearmost Muhr valley (Murwinkel), at the eastern foot of the Mureck ( 2402 m above sea level ), a summit of the Ankogel group of the Hohe Tauern between Schöderhorn (Großes Mureck, 2475 m above sea level ) and Murtörl ( 2260 m above sea level). A. ). The valley is called Schmalzgrube and extends between the Schöderhorn and the Frauennock ( 2678 m above sea level ). From here the Mur initially runs northeastwards, before it bends southeast at the Sticklerhütte , and then flows eastwards in the Mur-Mürz-Furche to Bruck and southwards through the Mur breakthrough valley in Upper Styria.
In fact, this source is not the supreme source, this is a debris source 900 meters south of Frauennock and Marchkareck ( 2661 m above sea level. A. ) as the head of the valley. It comes to about 2050 m above sea level. A. glaciers that have long since disappeared from the rubble . The source of the Mur, which pours significantly more powerfully, is located at 1898 m above sea level. A. to the right above the channel on a rock bank, and is a layer spring that rises directly from the rock. It belongs to a Kartal that comes from the east of the Rosskarscharte ( 2388 m above sea level ) and the long wall of the Rosskarzug.
Hydrography and geology
The source lies directly on one of the large fault lines that surround the Tauern window of the Hohe Tauern. The mountains of the Ankogel group consist of central gneiss (granite pluton of the Hafner group), these are palaeozoic , 450 to 300 million year old remains of the Variscan basement of the Alps ("primary rock"). The Schöderhorn trout gneiss (Hölltor-Kern), the Frauennock plagioclase granite (Hölltor-Rotgülden-Kern). Granite gneiss (Mureckschuppe) stretches from the Mureck to the Rosskarscharte. Directly north at the level of the Murtörl, the peripheral slate shell of the Tauern Window begins, old oceanic sediments of the Thetys from Upper Carboniferous to Permian (roughly 300 million years old). The Mureckschuppe is tectonically counted as part of the series of the Murtörl group. In between are calcareous sediments (Silbereck series), which are suspected to be in the Malm (Upper Jurassic, approx. 150 million years ago) and which were pushed over by the slate shell during the formation of the Alps. The Silbereck series is a dolomite , underlaid by lime marble - here called Silbereck marble - on quartzite , and overlaid by various slates . The limestone marble from the Oxfordian to the Kimmeridgian is dated .
These Jurassic carbonate rocks dip at 50 ° to the north. While the dolomite is quite stable and forms characteristic steps, the limestone marble is karstified and therefore water-bearing . The Silbereck series also forms the valley that goes up to the Rosskarscharte.
The channel coming from Frauennock is located in this cirque at a little under 2300 m in a group of sinkholes , called Murschwinde . Presumably from there the water of the source of the Mur origin comes. Several caves have been found in the cirque.
Between the Langer Wand and the Frauennock there is another cirque that runs north to the Rosskar. It is formed by the south-north streaking Rosskar fault, which penetrates deep into the crystalline. There is a small Karsee here, which probably drains neither to the Schmalzgrube nor to the Rosskar to the north - where another Karsee is fed from a spring - but probably eastwards towards Muritzenbach .
Alpinism
The scenic source of the Mur was already popular in the early days of alpinism.
Today the path leads from the Sticklerhütte over the Schwarzseen - Weinschnabel to the Kölnbreinspeichersee (variant of the Zentralalpenweg 02).
The source is already in the Hohe Tauern National Park and the Lungau – Nockberge biosphere reserve .
literature
- Christian Steinwender, Lukas Plan: Kontaktkarst in the Murursprung-Rosskar area (Lungau, Salzburg). In: Die Höhle 62 (2011), pp. 15–26, PDF on ZOBODAT
Web links
Individual evidence
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↑ The traces of the Little Ice Age from the 15th to the 19th century are here in the area up to 2400 m , so the source should have been much stronger during this time.
Compare Lit. Steinwender, Plan, 2011, Glacial Traces , p. 26 (pdf p. 11).
A travel guide from 1845 describes the upper Muritzen, where there are only isolated remains today, as “surrounded by eternal ice”: (FC Weidmann, ed. :) Tourist guide on excursions and hikes in Salzburg. Volume 1 (first main part, general overview. City of Salzburg, surroundings of the city, Pongau and Lungau. ), Verlag Carl Gerold, Vienna 1845, section Die Thauerntäler des Pongau's and Lungau’s , 7. Murwinkel and Murthal (Lungau) , p. 291 (section Pp. 290-303, Google eBook, full view ). - ↑ a b c d Lit. Steinwender, Plan, 2011, Geologie , p. 18 f. (pdf p. 3 f.), especially also Fig. 2 Schematic representation of the Tauern window and Fig. 3 Geological map of the recording area between Mursprung and Rosskarscharte .
- ↑ a b lit. Steinwender, Plan, 2011, discussion , p. 25 (pdf p. 11), and Fig. 6: Die Großdolinengruppe Murschwinde , p. 21 (pdf p. 7).
- ↑ a b Lit. Steinwender, Plan, 2011, Karstmorphologie , p. 19 (pdf p. 5).
- ↑ Lit. Steinwender, Plan, 2011, introduction , p. 15 f. (pdf p. 1 f.).
- ↑ Stage 21A in Hans Führer: Tauern-Höhenweg: From the Seckauer Tauern to the Ahrntal in South Tyrol. Series Rother Wanderführer Special , Bergverlag Rother, 2016 ISBN 9783763342631 , p.168 f.