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EarthCache

The stone village and rock, Kamenne mesto a Viklan

A cache by nunca007 Send Message to Owner Message this owner
Hidden : 1/13/2010
Difficulty:
1.5 out of 5
Terrain:
1.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:

The stone village and rock


ENGLISCH:
The stone village
In the Zihle forrest northwest of the village Zihle there is a tourists sought area of natural monuments U Baby - U lomu, part of natural park Horni Strela.
This nature sanctuary is the oldest one in the region and was founded in 1933. The protected area consists of two small separate sites. In the area called "U Baby" there are two big granite boulders bearing the names of "Baba" and "Dedek" ("Old woman" and "Old man"). The second area called "U lomu" ("By the quarry") is located about 1 km from the first one and is formed with a group of smaller granite boulders that creates a stone village. Other smaller stones can be found in the wood westwards from the village of Zihle.


Rocking Stones (westward from the natural park Zihle)
There are few such whims of nature that has long enjoyed the attention of tourists as the rocking stones. Rocking Stones (also known as logan stones or logans) are large stones that are so finely balanced that the application of just a small force causes them to rock. Some of them are so situated that the least touch can make them rock in one certain direction, but cannot be made to move in any other by all the force that can be applied to them by unaided humans.
In a book by Hemery they are described as being: " A rock which, through weathering, has become disjoined from the parent-rock and is pivoted upon it... Such rocks can be 'logged', set in motion without fear of their over balancing."
In other words, a logan is formed when a joint in a granite rock is eroded by the weather until it gets to a point when enough weathering has taken place to leave the stone balanced on a small pivot which enables the stone to rock or 'logg', as show in the diagram below:



They are found throughout the world. Some are man-made megaliths, but others are natural, often left by glaciers. Often wear, erosion or human intervention have resulted in the dislodging of rocking stones. There are a wide variety of beliefs associated with rocking stones. Because of their strange nature, rocking stones were sometimes associated with witchcraft, or Druids. Stones which were balanced so that the wind could move them were used sometimes in trials to determine guilt or innocence of the accused.
The Rocking Stones are created by gradual weathering of certain rock strata, from which only small remnants are remaining in the form of balanced stones lying on the bedrock with only his small part. Lots of them can be found in deserts and they are generally the result of the intrusive activity of the wind that rushing grains of sands that literally "undercut" foot of the rocks. As you can read in some travel books describing sandstorms the rocking stones can sometimes even be moved by the power of wind.

Not all of the stones called "rocking" are really rocking stones in the true sense. Some of them are still tightly linked with subsoil even if with their tiniest part, some of them are based on several spots - in this case they cannot be moved. In addition, only those "in situ", ie not relocated (by avalanche, collapsing, etc.). are considered as the "genuine" rocking stones.

Question 1 What kind of stone is Zihle rocking stone?
Question 2 What kind of vegetation grows on the nearby hump?
Question 3 What is the height of the rocking stone?
Question 4 What kind of the tectonic rock can be found around Zihle?
Question 5 Please insert a photo of yourself, your GPS and balance boulder

CZECH:
Kamenne mesto
V oblasti Zihelskeho lesa severozapadneim smerem od obce Zihle je turisticky vyhledávaná oblast prírodní památky U Báby - U Lomu v oblasti Prirodniho parku "Horni strela". Toto území je nejstarším v regionu a bylo vyhlášeno již v roce 1933. Chránenou oblast tvorí dve nevelké oddelené plochy. Na území nazývané "U Báby" se nachází dva velké žulové balvany, nesoucí název "Bába" a "Dedek". Druhé území "U lomu" se rozkládá asi jeden kilometr od první oblasti a tvorí ji seskupení menších žulových balvanu tvorících skalní mesto. Dalsí mensí balvany jsou v lese západním smerem od obce Zihle. A tam najdeme i dalsí balvan jménem "U VIKLANU"
U VIKLANU

Málokteré kamenné hrícky prírody se odedávna teší takové pozornosti jako viklany. Vznikají postupným zvetráváním urcité vrstvy horniny, z níž zbudou pouze male zbytky v podobe vyvážených balvanu ktere jen svou malou cástí leží na skalním podloží,takže nekteré lze vetší ci menší silou rozkývat.


V cestopisných reportážích lícících písecné boure byly dokonce popisovány viklany rozkývané poryvy vetru. V pouštích je techto útvaru nejvíce a vesmes jsou zde výsledkem rušivé cinnosti vetru unášejícího pri zemi zrnka písku a doslova „podrezávajícího“ úpatí skal.
Vznikají postupným zvetráváním urcité vrstvy horniny, z níž zbudou pouze male zbytky v podobe vyvážených balvanu, které se nepatrnou plochou dotýkají podloží.Mívají promenlivou velikost. Pokud skalni blok spociva nekolika malymi plochami na podlozi, hovorime o pseudoviklanech. Vyvoj je nejcasteji vysvetlovan procesy selektivniho zvetravani a odnosu hornin. V aridnim prostredi je vznik vysvetlovan korazni cinnosti vetru a pisku.
Vyskytuji se prevazne v oblastech tvorenymi zulami, vzacneji v piskovcich. Viklany patri k napadnym a pomerne vzacnym mikro a mezoformam reliefu.

Ne každý útvar oznacovaný jako viklan je však „kývavým kamenem“ v pravém slova smyslu. Nekteré jsou dosud pevne spojeny s podložím, byt jen malou plochou, jiné zase spocívají na podkladu nekolika ploškami – ani v tomto prípade je nelze rozkývat. Krome toho jsou za „pravé“ viklany používány pouze útvary v poloze „in situ“, tedy nepremístené (rícením, v sutích apod.).



Schéma rozširování puklin v žule pri postupujícím zvetrávání a konecný vznik izolovaných balvanu na povrchu žulové krajiny.

Otazka c. 1 Jaky druh kamene je Zihelsky viklan
otazka c. 2 Jakou vegetaci je zarostly pahorek v okoli viklanu
otazka c 3 Jake ma viklan rozmery - vyska
otazka c 4 Jaka cast tektonickeho podlozi je kolem Zihle
otazka c 5 Foto U VIKLANU Vas, nebo Vasi GPS
Pri spolecne fotce, uvadejte vsichni s kym jste se fotili, zjednodusuje to pak dohledavani, Dik


Necekejte prosim na mou odpoved, logujte pokud jste odpovedeli na otazky, jinak logujte pouze WRITE NOTE. A po odeslani odpovedi, prepnete na FOUND IT. Pokud neco tak o tom budete vedet
Ale prosim neotalejte s odpovedi. Mnozi se pripady logovani po 2 mesicich a to se mi nelibi. Dekuji za pochopeni.
Nehladejte v odpovedi zadnou vedu, koukni se po okoli a odpovidej, na to nepotrebujete pana Googla.

Pouzita literarura:
http://www.legendarydartmoor.co.uk/Logan_stones.htm
http://en.wikipedia.org/wiki/Rocking_stone
http://www.vesmir.cz/clanky/clanek/id/3292
http://expedice.rps.cz/lokality/25135-Zihelske-kameny-viklan-prirodni-zajimavost.html

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Last Updated: on 12/22/2017 12:50:34 PM (UTC-08:00) Pacific Time (US & Canada) (8:50 PM GMT)
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Coordinates are in the WGS84 datum

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