{"id":439,"date":"2021-03-24T11:13:00","date_gmt":"2021-03-24T10:13:00","guid":{"rendered":"http:\/\/d.r1.wbsprt.com\/kmplg.sk\/?p=439"},"modified":"2023-07-30T21:07:41","modified_gmt":"2023-07-30T19:07:41","slug":"bazaltovy-lom-camovce-na-juznom-slovensku","status":"publish","type":"post","link":"https:\/\/kmplg.sk\/?p=439","title":{"rendered":"Bazaltov\u00fd lom \u010camovce na ju\u017enom Slovensku"},"content":{"rendered":"\n

Bazaltov\u00fd lom \u010camovce naLokalita \u010camovce (N48\u00b014\u20199.99\u201d, E19\u00b051\u201943.18\u201d) je v\u00fdznamnou geologickou lokalitou situovanou v\u00a0prednej \u010dasti bazaltov\u00e9ho l\u00e1vov\u00e9ho pr\u00fadu Belinsk\u00fd vrch v\u00a0Cerovej vrchovine, okres Lu\u010denec (Obr.1)<\/strong>. <\/p>\n\n\n\n

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Obr.1. (A) <\/strong>Sch\u00e9ma stavby alkalick\u00e9ho bazaltov\u00e9ho vulkanizmu na ju\u017enom Slovensku (Kone\u010dn\u00fd et al., upraven\u00e9). (B) <\/strong>Detailn\u00fd poh\u013ead na l\u00e1vov\u00fd pr\u00fad Belinsk\u00fd vrch,\u00a0 l\u00e1vov\u00fd nek a\u00a0troskov\u00fd ku\u017ee\u013e Monica. Medzi \u010d\u00edslami 1 \u2013 2 je rez bazaltov\u00fdm lomom situovan\u00fdm v\u00a0z\u00e1vere l\u00e1vov\u00e9ho pr\u00fadu so zn\u00e1zornen\u00edm inverzie reli\u00e9fu<\/em>.<\/figcaption><\/figure>\n\n\n\n

Pomenovan\u00e1 je pod\u013ea bl\u00edzkej dediny \u010camovce. L\u00e1vov\u00fd pr\u00fad Belinsk\u00fd vrch eruptoval z\u00a0vulkanick\u00e9ho centra Monica (troskov\u00fd ku\u017ee\u013e) a\u00a0tiekol smerom na severoz\u00e1pad, kedy vyplnil paleodolinu dlh\u00fa asi 4 km. L\u00e1vov\u00fd pr\u00fad je s\u00fa\u010das\u0165ou rozsiahleho are\u00e1lu mlad\u00e9ho alkalick\u00e9ho bazaltov\u00e9ho vulkanizmu na ju\u017enom Slovensku. K-Ar r\u00e1diometrick\u00fd vek l\u00e1vov\u00e9ho pr\u00fadu je 5,18 + 0,02 mili\u00f3nov rokov (Kone\u010dn\u00fd 2007). V\u00a0s\u00fa\u010dasnosti tvor\u00ed l\u00e1vov\u00fd pr\u00fad horsk\u00fd chrb\u00e1t s\u00a0nadmorskou v\u00fd\u0161kou 425 m.n.m. Tento morfologick\u00fd jav je inverzia reli\u00e9fu, preto\u017ee v\u00a0d\u00e1vnej minulosti do\u0161lo k\u00a0intenz\u00edvnej denud\u00e1cii (zvetr\u00e1vaniu) a\u00a0odstra\u0148ovaniu okolit\u00fdch, menej odoln\u00fdch Mioc\u00e9nnych sedimentov a\u00a0k v\u00fdzdvihu celej oblasti. V\u00a0podlo\u017e\u00ed l\u00e1vov\u00e9ho pr\u00fadu sa nach\u00e1dzaj\u00fa \u0161trky a\u00a0piesky tvoriace belinsk\u00e9 vrstvy, ktor\u00e9 s\u00fa d\u00f4kazom existencie star\u00e9ho vodn\u00e9ho koryta (Obr. 2)<\/strong>. <\/p>\n\n\n\n

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Obr. 2.<\/strong> Severn\u00fd okraj l\u00e1vov\u00e9ho pr\u00fadu Belinsk\u00fd vrch otvoren\u00fd lomom. L\u00e1vov\u00fd pr\u00fad le\u017e\u00ed na svetl\u00fdch mioc\u00e9nnych pieskoch a\u00a0\u0161trkoch.<\/em><\/figcaption><\/figure>\n\n\n\n

V\u00a0spodnej \u010dasti l\u00e1vov\u00e9ho pr\u00fadu m\u00e1 bazalt typick\u00fa doskovit\u00fa odlu\u010dnos\u0165, vy\u0161\u0161ie blokovit\u00fa odlu\u010dnos\u0165 poukazuj\u00facu na chladnutie pr\u00fadu po\u010das jeho pohybu (Obr. 3)<\/strong>. V\u00a0lok\u00e1lnych depresi\u00e1ch, kde sa pohyb l\u00e1vov\u00e9ho pr\u00fadu spomalil, sa vyvinula aj st\u013apcov\u00e1 odlu\u010dnos\u0165 (Obr. 4)<\/strong>.<\/p>\n\n\n\n

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Obr. 3.<\/strong>\u00a0 Tri typy odlu\u010dnosti bazaltu. V\u00a0spodnej \u010dasti je zrete\u013en\u00e1 doskovit\u00e1 odlu\u010dnos\u0165, nad \u0148ou sa nach\u00e1dza bazalt s\u00a0blokovitou odlu\u010dnos\u0165ou a\u00a0vo vrchnej \u010dasti st\u013apcov\u00e1 odlu\u010dnos\u0165.<\/em><\/figcaption><\/figure>\n\n\n\n
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Obr. 4. <\/strong>Lok\u00e1lne vyvinut\u00e1 st\u013apcov\u00e1 odlu\u010dnos\u0165, v\u00a0depresii pri spomalen\u00ed pohybu l\u00e1vov\u00e9ho pr\u00fadu.<\/em><\/figcaption><\/figure>\n\n\n\n

Bazalt na lokalite \u010camovce m\u00e1 porfyrick\u00fa \u0161trukt\u00faru s\u00a0ve\u013ek\u00fdmi fenokry\u0161t\u00e1lmi oliv\u00ednu a\u00a0diopsidu do ve\u013ekosti 1 cm. Jemozrnn\u00e1 matrix je zlo\u017een\u00e1 z\u00a0oliv\u00ednu, diopsidu, labradoritu a\u00a0zriedkavo nefel\u00ednu a\u00a0sodalitu (Obr.5)<\/strong>. Z\u00a0geochemick\u00e9ho h\u013eadiska je bazalt z\u00a0lokality \u010camovce \u2013 nefel\u00edn normat\u00edvny bazalt a\u017e trachybazalt, typick\u00fd pre vn\u00fatrokontinent\u00e1lne plat\u0148ov\u00e9 prostredie. Na lokalite boli op\u00edsan\u00e9 aj xenolity exotick\u00fdch A1<\/sub>-typov\u00fdch granitov (Obr. 6) <\/strong>a\u00a0mafick\u00e9 gabroidn\u00e9 kumul\u00e1tov\u00e9 xenolity zlo\u017een\u00e9 z\u00a0diopsidu, oliv\u00ednu a\u00a0b\u00e1zick\u00e9ho plagioklasu (Huraiov\u00e1 et al., 2017; 2019). Nov\u00fdm objavom s\u00fa Ca-silik\u00e1tov\u00e9 xenolity s netradi\u010dn\u00fdm mineralogick\u00fdm zlo\u017een\u00edm (Reato et al., 2022). \u00a0\u00a0<\/p>\n\n\n\n

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Obr. 5. <\/strong>Mikrofotografia bazaltu zlo\u017een\u00e9ho z\u00a0fenokry\u0161t\u00e1lov oliv\u00ednu (fialovo – modr\u00fd) v\u00a0jemnozrnnej z\u00e1kladnej hmote tvorenej preva\u017ene plagioklasom (siv\u00fd), oliv\u00ednom a\u00a0klinopyrox\u00e9nom (pestr\u00fd).\u00a0<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n\n\n\n
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Obr. 6. <\/strong>Svetl\u00fd granitov\u00fd xenolit uzavret\u00fd v\u00a0bazalte zlo\u017een\u00fd z\u00a0plagioklasu, alkalick\u00e9ho \u017eivca a\u00a0kreme\u0148a. Akcesorick\u00e9 miner\u00e1ly, pozorovate\u013en\u00e9 len v\u00a0mikroskope, s\u00fa Fe-Ti oxidy \u2013 magnetit a ul\u00f6spinel, apatit, a\u00a0miner\u00e1ly s\u00a0vysok\u00fdm obsahom HFS prvkov (Zr, Nb, Ta, Ti) ako zirk\u00f3n, columbit-Mn, oxykalciopyrochl\u00f3r a fergusonit-Y. V\u00a0spodnej \u010dasti vzorky je preru\u0161ovanou \u010diarou ohrani\u010den\u00fd Ca-silik\u00e1tov\u00fd xenolit zlo\u017een\u00fd z anortitu, klinopyrox\u00e9nu, oliv\u00ednu a\u00a0spinelu. \u00a0<\/em><\/figcaption><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n

Kame\u0148olom bol zalo\u017een\u00fd pravdepodobne na konci 19. storo\u010dia pre \u0165a\u017ebu kameniva pre domy a\u00a0cesty. V\u00a0prev\u00e1dzke bol takmer nepretr\u017eite dodnes s\u00a0r\u00f4znou intenzitou \u0165a\u017eby a\u00a0obdobiami \u00fapln\u00e9ho k\u013eudu. Posledn\u00fdch p\u00e4\u0165 rokov sa bazalt intenz\u00edvne \u0165a\u017e\u00ed a\u00a0drv\u00ed na makadam potrebn\u00fd pre v\u00fdstavbu r\u00fdchlostn\u00fdch ciest (Obr. 7)<\/strong>. M\u00f4\u017eeme len d\u00fafa\u0165, \u017ee postupne cel\u00fd lom, ktor\u00fd nav\u0161tevovali po\u010detn\u00e9 geologick\u00e9 exkurzie nezanikne. Nieko\u013eko stoviek metrov od neho sa nach\u00e1dza aj v\u00fdznamn\u00e1 pr\u00edrodn\u00e1 pamiatka Belinsk\u00e9 skaly, ktor\u00e1 je s\u00fa\u010das\u0165ou CHKO Cerov\u00e1 vrchovina. T\u00e1to lokalita je nav\u0161tevovan\u00e1 pre skaln\u00e9 steny, v\u00fdbe\u017eky, ve\u017ei\u010dky, okn\u00e1 a\u00a0mal\u00e9 jaskyne, ktor\u00e9 vznikli p\u00f4soben\u00edm svahov\u00fdch pohybov, gravit\u00e1cie a\u00a0zvetr\u00e1vania l\u00e1vov\u00e9ho pr\u00fadu Belinsk\u00fd vrch.\u00a0\u00a0\u00a0<\/p>\n\n\n\n

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Obr. 7.<\/strong> V\u00a0s\u00fa\u010dasnosti je lom \u010camovce op\u00e4\u0165 \u010dinn\u00fd. Vy\u0165a\u017een\u00fd bazalt sa priamo v\u00a0lome drv\u00ed na makadam, pou\u017e\u00edvan\u00fd najm\u00e4 ako podklad pre v\u00fdstavbu ciest.<\/em><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Bazaltov\u00fd lom \u010camovce naLokalita \u010camovce (N48\u00b014\u20199.99\u201d, E19\u00b051\u201943.18\u201d) je v\u00fdznamnou geologickou … <\/p>\n","protected":false},"author":4,"featured_media":318,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"ngg_post_thumbnail":0},"categories":[80,18],"tags":[],"post_folder":[75],"yoast_head":"\nBazaltov\u00fd lom \u010camovce na ju\u017enom Slovensku - Katedra mineral\u00f3gie, petrol\u00f3gie a lo\u017eiskovej geol\u00f3gie<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kmplg.sk\/?p=439\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bazaltov\u00fd lom \u010camovce na ju\u017enom Slovensku - 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