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EarthCache

Gervigígur / Pseudokrater / pseudocrater - Myvatn

A cache by sukosun&piratebride Send Message to Owner Message this owner
Hidden : 8/20/2010
Difficulty:
2 out of 5
Terrain:
2 out of 5

Size: Size: other (other)

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Gervigígur Myvatn / Pseudokrater am Myvatn

Pseudocrater at Myvatn

 

 

Island Flagge Version

+++ Iceland +++


Gervigígur er náttúrufyirbæri sem líkist eldgígi en er án gosrásar. Gervigígar myndast þegar hraun rennur yfir votan jarðveg á borð við mýri eða grunnt stöðuvatn. Vatnið nær lokast inni í eða undir hrauninu og skapa mikinn gufuþrýsting. lokum springur hraunþekjan og eftir verður gíglaga hóll. Gervigígar standa gjarnan margir saman í þyrpingum. Þekktir eru gervigígarnir í Mývatni sem mynduðust þegar Laxárhraun yngra rann fyrir rúmum 2000 árum. Stærstur gervigíganna við Mývatn er Geitey sem nær 30 m hæð yfir vatnsborðið. Rauðhólar ofan við Reykjavík er annað dæmi um gervígíga en þeir mynduðust þegar Leitahraun rann yfir votlendi fyrir um 4700 árum.

 

Deutschland Flagge Version

+++ German +++


Bei den Pseudokratern handelt es sich um ein dem Vulkanismus zuzurechnendes Phänomen. Wenn heiße Lava über ein Feuchtgebiet strömt, wobei es sich um Sümpfe, aber auch um Seen oder Teiche handeln kann, entstehen explosive Gase. Die Dampfblasen durchbrechen die Lavadecke und in einer phreatischen Explosion werden Pyroklastika sowie Formen gebildet, die einem echten Vulkankrater oft sehr ähnlich sehen können. Diese Gebilde tragen nicht umsonst im Englischen auch die Bezeichnung rootless cone. Sie haben sozusagen keine Wurzel, d. h. keine Magmazuleitung aus dem Erdinneren. Bekannte Beispiele für Pseudokrater findet man etwa auf Island am See Mývatn in Form der Skútustaðagígar in der Gemeinde Skútustaðir, aber auch in der Nähe der Hauptstadt Reykjavík in den Kratern Rauðhólar und im Südosten Islands als Landbrotshólar. Ein weiteres Beispiel ist die Höhle Tintron.

 

Flagge Vereinigtes Königreich  Version    

+++ English +++


A pseudocrater is a volcanic landform which resembles a true volcanic crater, but differs in that it is not an actual vent from which lava has erupted. Pseudocraters are also known as rootless cones, since they are characterised by the absence of any magma conduit which connects below the surface of the earth. Pseudocraters are formed by steam explosions as flowing hot lava crosses over a wet surface, such as a swamp, a lake, or a pond. The explosive gases break through the lava surface in a manner similar to a phreatic eruption, and the tephra builds up crater-like forms which can appear very similar to real volcanic craters. Well known examples are found in Iceland like the craters in the lake Mývatn (Skútustaðagígar), the Rauðhólar in the region of the capital city Reykjavík or the Landbrotshólar in the southeast of Iceland. Volcanologists witnessed the formation of a pseudocrater for the first time in history during a steam explosion in connection with the first eruption of Eyjafjallajökull in March 2010.

 

________________________________________________________________________________

Bitte das Privatgelände nicht betreten !

Die Informationen können im Informationscenter oder

auf den Infotafeln am Myvatn abgelesen werden.

 

Please do not enter the private property!

The information can be read in the Information Center

or on the notice boards at Myvatn.

---

 

Um diesen Cache zu loggen musst du folgende Fragen beantworten: --- Ihr könnt sofort loggen, sollte etwas nicht stimmen melde ich mich bei euch !---
To log this cache, answered the following questions: --- You can login immediately, should something wrong I'll get back to you! ---

1. Auf welchem Planeten wurden außerdem Pseudokrater entdeckt?
1.On which planet pseudo craters were discovered, in addition?

2.Untersuche die Geologie eines Pseudokrates um folgende Frage zu beantworten: Sind Pseudokrater Vulkane?
2. Examine the geology of a pseudocrater and answer the following question: If pseudo craters are volcanoes?

3. (optional) Mach ein Foto von dir an einem Pseudokrater oder diesem im Hintergrund.
3. (optional) Make a photo from you at a pseudocrater or from you with background a pseudocrater.

Bitte sende die Antworten per Nachricht über das Nachrichten Center
Please send the answers via the Message Center

 

Additional Hints (Decrypt)

Ovggr qnf Cevingtryäaqr avpug orgergra !
Qvr Vasbezngvbara fgrura vz Vasbezngvbafpragre bqre xöaara nhs qra Vasbgnsrya nz Zlinga notryrfra jreqra.
--- Vue xöaag fbsbeg ybttra, fbyygr rgjnf avpug fgvzzra zryqr vpu zvpu orv rhpu ! ---

Cyrnfr qb abg ragre gur cevingr cebcregl!
Gur vasbezngvba pna or ernq va gur Vasbezngvba Pragre be ba gur abgvpr obneqf ng Zlinga.
--- Lbh pna ybtva vzzrqvngryl, fubhyq fbzrguvat jebat V'yy trg onpx gb lbh! ---

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)



 

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Current Time:
Last Updated: on 1/21/2018 1:44:06 PM (UTC-08:00) Pacific Time (US & Canada) (9:44 PM GMT)
Rendered From:Unknown
Coordinates are in the WGS84 datum

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