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Streckuv kopec

A cache by Cunik Send Message to Owner Message this owner
Hidden : 09/24/2009
Difficulty:
2 out of 5
Terrain:
2 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:


CZ

Asi 1,5 km sv. od Blatnice pod Sv. Ant., bezprostredne na vrcholu kóty Streckuv kopec (360,5 m n. m.) a 800 m vjv. od kostela Sv. Antonínek se nachází malý jámový lom o obvodu 30 m a hloubce maximálne 4 m slouzící v minulosti k prílezitostné tezbe kameniva. Prístup je po hlinené polní ceste, která ústí na silnici Blatnice - Ostrozská Lhota asi 0,3 km pod Sv. Antonínkem. V lomu, který je soucástí belokarpatské jednotky magurského flyse, jsou zachyceny svrchnokrídové sedimenty antoníneckého souvrství (stárí okolo hranice kampán-maastricht). Jde o jeho jediný známý odkryv a soucasne i typovou lokalitu, která má znacný význam pro korelace v rámci flysového pásma Východních Alp a Západních Karpat.

Ve východní stene lomu vystupuje cca 3 m mocná poloha svetle hnedave sedých, do bela ovetrávajících, vrstevnatých, silne vápnitých jílovcu az slínovcu. Výse se nachází asi 15 cm mocná vlozka svetle okrového slínu. Nad nimi je vyvinuta cca 3 m mocná poloha cockovite nadurujících lavic hnedosedých jemne píscitých vápencu o mocnosti 12 - 120 cm. Nejvýse vystupují modrosedé vápence s vysokým podílem nekarbonátových klastu. Slínovce poskytly spolecenstvo foraminifer s vápnitým bentosem a drobným planktonem (hadbergely, heterohelixy). Druhove diversifikované vápnité nanofosilie svedcí o kampánském stárí. Podle detailního urcení planktonických foraminifer se vsak jedná o mastricht, byly zjisteny druhy: Globotruncanella petaloidea (Gand.), G. bavanensis (Voorw.), Globiderinelloides subcarinata (Bronn).

Pro uznání logu je potreba:
1) vyfotit sebe nebo GPS u informacní tabuli
2) vyfotit sebe nebo GPS s píscitým vápencem
3) vyfotit sebe nebo GPS s modrosedým vápencem
4) vysvetlit pojem magursky flys
5) vysvetlit co to jsou klasty.

EN

Approximately 1.5 km north-eastward from Blatnice pod Sv. Ant., directly on the top of Strecek's Hill elevation point (360.5 meters above sea level) and 800 m south-eastward from St. Anthony Church a small lava mine is located with 30 m circumference and almost 4 m depth which in the past served for occasional mining of aggregate. The site is accessible on a clay rural road which opens on motorway Blatnice - Ostrozská Lhota approximately 0.3 km below St. Anthony. Upper Cetraceous sediments of St. Anthony measures (age around Campan-Maastricht border) are caught in the mine, which is part of White Carpathian mass of Magurian flysch. This place is its only known exposure and at the same time a type locality with considerable significance for correlations within the flysch range of Eastern Alps and Western Carpathians.

The light brownish-grey stratified and very calciferous claystones and marlstones, weathered white, occupy approximately 3 m strong position in the eastern wall of the mine. 15 cm strong layer of light ochreous marl is located above it. Approximately 3 m strong position of lenticularly swollen beds of brown-grey fine arenaceous limestones in thickness 12 - 120 cm developed above these two layers. And blue-grey limestones with high share of non-carbonaceous clastics extend at the top. Marlstones provided community of foraminifers with calciferous benthos and small plankton (hadbergels, heterohelices). Species-diversified calciferous nanofossils evidence the Campanian age. However, according to detailed specification of planctonic foraminifers, it is Maastricht. The detected species include: Globotruncanella petaloidea (Gand.), G. bavanensis (Voorw.), Globiderinelloides subcarinata (Bronn).

For log approval it is necessary to:
1) take a snap of oneself or GPS with information board
2) take a snap of oneself or GPS with arenaceous limestone
3) take a snap of oneself or GPS with blue-grey limestone
4) explain what is Magurian flysch
5) explain what are clastics.

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