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EarthCache

Lom Rasova / Sandstone quarry Rasova

A cache by vara&vara Send Message to Owner Message this owner
Hidden : 4/15/2009
Difficulty:
2 out of 5
Terrain:
2.5 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:


Lom Rasova / Sandstone quarry Rasova


[CZ]


Piskovcovy lom Rasova o vymere 4,43 ha se nachazi asi 2,5 km jizne od obce Komna v CHKO Bile Karpaty. Lamal se zde lomovy soklovy kamen, pozdeji se z nej vyrabely prevazne drte a silnicni sterky. Dulezitou roli sehral pri vystavbe silnice c. E50, vedouci na Slovensko, uskutecnene ve tricatych letech minuleho stoleti. V lomu se prestalo tezit v 50. letech minuleho stoleti a na nekterych mistech jsou dosud videt prazce, ktere jeste nestacila pohltit okolni priroda. Po opusteni tezarskou spolecnosti zacal lom pustnout a vytezeny prostor zaplavila podzemni voda do hloubky az 4 m. Lokalita Vas zaujme zejmena tim, ze zde najdete radu vzacnych a ohrozenych druhu rostlin (prozatim bylo zjisteno na 199 druhu) a zivocichu. Rasova byla v roce 1991 vyhlasena prirodni pamatkou.

Zakladni horninu tvori flys - jedna se o soubor stridajicich se vrstev piskovcu a jilovcu, ktere jsou usazeninami tretihorniho more. Jde zejmena o magursky piskovec (svrchni paleocen) belokarpatske jednotky. Piskovec je jemnozrnny a svetle sedy, s mezivrstvami hnedosedych vapnitych jilovitych bridlic s prachovou primesi. Prevlada zde gradacni a homogeni zvrstveni. Na lokalite nebyly zjisteny mikrofosilie, coz je dano naprostou prevahou turbiditu. Jamovy lom k tezbe kamene byl vyhlouben 8 az 15 m pod uroven okolniho terenu.

Pro zalogovani teto earthcache musite splnit nasledujici podminky:
1. Vyfotte se s vasi GPSkou pred lomovou stenou a jezirkem, fotku prilozte k logu.
2. Na uvedenych souradnicich zmerte nadmorskou vysku a tu nam zaslete na email v profilu.
3. Vysvetlete co jsou to turbidity a odpoved nam zaslete na email v profilu.

 

Logy, ktere nesplni vyse uvedene podminky, budou podle pravidel smazany.


 

[ENG]


Sandstone quarry Rasova (area 4,43 ha) is located approximately 2,5 km to the south of village Komna in CHKO White Carpathians. There used to be rubble plinth stone mined, later on road grit and gravel was made of it. It played an important role in the construction of road # E50 heading to Slovakia in 30s of the last century. Mining stopped in 50s of the last century, there are still visible sleepers in some places, which were not absorb by the surrounding countryside. After leaving mining company, quarry began to run wild, extractived space was flooded with underground water to a depth of up to 4 metres. Locality will particularly interest you in finding a number of rare and endangered plant species (it was found about 199 species for now) and animals. Rasova was proclaimed a natural monument in 1991.

Basic rock is composed by flysch – it is an assemblage of sandstone and claystone changing layers, which are the sediments of Tertiary sea. Particularly it is magurian sandstone (upper Paleocene) of White Carpathians. Sandstone is fine-grained and light gray colour, with interlayers of fuscous-calcic-clay slates with a dust impurity. Gradatory and homogenous layers predominate. Microfossils were not found here, this is a due to complete dominance of turbidite. Quarry hole for the extraction of stone was excavated 8 to 15 m below the surrounding terrain.

To claim credit for this Earthcache you must meet the following requirements:
1) In your log entry, upload a picture of yourself before quarry wall and lagoon.
2) On the note coordinates measure above sea level altitude and send this information to our email in profile.
3) Explain what are turbidite and send this answer to our email in profile.


Logs that do not meet the above conditions, it will be deleted in accordance with the rules.


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Current Time:
Last Updated: on 11/15/2017 3:17:57 PM (UTC-08:00) Pacific Time (US & Canada) (11:17 PM GMT)
Rendered From:Unknown
Coordinates are in the WGS84 datum

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