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Bears outlooks / Medvedi rozhledy

A cache by otto.cz Send Message to Owner Message this owner
Hidden : 11/30/2010
Difficulty:
2 out of 5
Terrain:
2.5 out of 5

Size: Size: other (other)

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Geocache Description:


Bears outlooks / Medvedi rozhledy



Bears outlooks are created by isolated serpentine rockworks. Serpentin stone is a sort of transformed mineral. It includes serpentine, magnetite, garnet, pyroxene and amphibole.
Bear outlooks, isolated rockworks, concure with so called Munich serpentins. The rockworks are situated at the northern border of this chine. There are growing many specific plants on the serpentin stones, that include increased amount of magnesium. These locations are interesting and protecting for them. This location is included in the system „Natura 2000“ for the occurence of special kinds of mouse-ear (Cerastium alsinifolium) and finger-fern (Asplenium adulterinum, Asplenium cuneifolium, ), that grow plentifuly in rocky slots.
The cache :

To log a found in this EC, E-mail me the answers through my GC profile :
1.How rises serpentine ?
2.Count the weight of one of 2 monoblocks (see spoiler). Measuer a monoblock (length x width x height – round to decimetres) and use the average denseness 2,5 kg/dm3.
3.Please post in "Online log", your picture (visible person) close to some serpentine rockwork .


Medvedí rozhledy jsou tvoreny izolovanými hadcovými skalkami. Hadec neboli serpentinit je druh metamorfované horniny. Skládá se ze serpentinu, magnetitu, granátu, pyroxenu a amfibolu.
Medvedí rozhledy navazují jako izolované skalky na tzv. Mnichovské hadce. Skalky se nachází pri severním okraji tohoto hrbetu.Na hadcových horninách, které obsahují zvýšenou míru horcíku roste mnoho specifických rostlin, pro které jsou tyto lokality stredem zájmu a ochrany.
Lokalita je zahrnuta do soustavy Natura 2000 pro výskyt rožce kurickolistého (Cerastium alsinifolium) a sleziníku nepravého (Asplenium adulterinum), který zde roste v hojném poctu ve skalních šterbinách. Z dalších chránených a významných rostlin je to sleziník hadcový (Asplenium cuneifolium) .
Keš :

K zalogovani poslete pres profil odpovedi na otazky : :
1. Jak vzniká hadec (serpentit ) ?
2.Vypoctete hmotnost jednoho ze 2 monobloku (viz spoiler). Zmerte monoblok (délka x šírka x výška - rozmery zaokrouhlete na decimetry) a k výpoctu použijte prumernou hustotu 2,5 kg/dm3 .
3.Prilozte prosím k logu fotografii, na ktere budete zobrazeni (viditelna postava) u nekteré z hadcových skalek.

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