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Berca Mud Volcanoes - OR0170
Proprietar: drei_kloetze
N 45° 21.490' E 26° 42.740' N 45° 21' 29.40'' E 26° 42' 44.40'' N 45.35817°  E 26.71233° 
Altitudine: 332 m
 Zonă: România > ?
Tip geocutie: Virtuală
Mărime: Fără cutie
Stare: Ready for Search
Data ascunderii: 2013-10-13
Data creării: 2016-05-29
Date published: 2016-05-29
Ultima modificare: 2016-11-02
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Parcare în apropiere  Geocutie ascunsă în mijlocul naturii  Monument istoric  Acces doar în anumite ore sau zile sau cu taxă  Accesibilă doar mergând pe jos 

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Descriere EN RO

[EN] This Earth Cache will show you the Berca mud volcanoes. Several sites with mud volcanoes are known in Romania, with those here in the Berca-Arbanasc valley being the largest [1]. An area of 30 km2 surrounding the Berca mud volcanoes was declared a nature reserve in 1924. Here, two sites exist in close proximity, Paclele Mari (above coordinates) and Paclele Mici (N 45° 20.350 E 026° 42.500).

 

bursting mud bubble

The mud volcanoes are formed by "eruptions" of natural gases - primarily methane - that cause mud, underground water and sometimes oil to be pushed to the surface, where the mud dries and formes volcano-like structures many metres high [2]. It is estimated [3] that the Berca mud volcanoes emit about 1200 metric tonnes of methane per year, a potent greenhouse gas. The gas is emitted from a depth of ca. 3 km.
Geologically, two types of mud volcanoes can be distinguished. One type is associated with true volcanic activity, the other type is not [1]. The Berca mud volcanoes belong to the latter type. Mud volcanoes are often associated with either geodynamically active regions or the presence of oil and gas deposits [1], or both as is the case here.

In order to log this cache, please answer the questions below and send them to the e-mail adress in our profile:
1) Is the mud ejected from the volcanoes hot or cold, and why?
2) How many active "craters" can you identify?
3) Estimate the approximate height of the highest mud volcano - there is no need to be precise here, just make a guess.
4) Do you think the answers to (2) and (3) will be the same if you come back in a year or so, and why?
5) (optional) Upload a picture of yourself and/or your GPS with your log

You can log the cache as soon as you have sent the answers, there is no need to wait for a log permission. If there are any problems with your answers we will get in touch ...

Sources:
[1] V.N. Kholodov, Lithology and Mineral Resources 37(2002)197; Mud Volcanoes, Their Distribution Regularities and Genesis: 1.
[2] Wikipedia - Berca Mud Volcanoes
[3] G. Etiope et al., Terra Nova 16(2004)179; Gas Flux to the Atmosphere from Mud Volcanoes in Eastern Romania
Photos & video: own work; flags: public domain

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