{"id":1506,"date":"2020-04-18T09:00:00","date_gmt":"2020-04-18T07:00:00","guid":{"rendered":"https:\/\/beta.svetkamene.eu\/?p=1506"},"modified":"2021-02-09T00:08:07","modified_gmt":"2021-02-08T23:08:07","slug":"krajem-kameniku-na-ricansku-cast-2-b-lom-zernovka","status":"publish","type":"post","link":"https:\/\/svetkamene.eu\/index.php\/cs\/2020\/04\/18\/krajem-kameniku-na-ricansku-cast-2-b-lom-zernovka\/","title":{"rendered":"Krajem kamen\u00edk\u016f na \u0158\u00ed\u010dansku \u2013 Lom \u017dernovka, 2.&nbsp;d\u00edl"},"content":{"rendered":"\n<p>\u0158\u00ed\u010dansk\u00fd pluton tvo\u0159\u00ed t\u011bleso p\u0159ibli\u017en\u011b eliptick\u00e9ho pr\u016f\u0159ezu (13 \u00d7 9 km). Jak uk\u00e1zal ji\u017e Katzer (1888), to sest\u00e1v\u00e1 p\u0159edev\u0161\u00edm ze dvou koncentricky uspo\u0159\u00e1dan\u00fdch hlavn\u00edch magmatick\u00fdch faci\u00ed, vn\u011bj\u0161\u00ed, vyrostlicemi bohatou, a&nbsp;vnit\u0159n\u00ed, s&nbsp;mal\u00fdm mno\u017estv\u00edm vyrostlic. Jejich kontakt nen\u00ed odkryt, ale je pravd\u011bpodobn\u011b pozvoln\u00fd. Tak\u00e9 rozd\u00edly v&nbsp;mod\u00e1ln\u00edm slo\u017een\u00ed a&nbsp;obsaz\u00edch hlavn\u00edch prvk\u016f jsou minim\u00e1ln\u00ed. Nov\u00e1 U&nbsp;\u2013 Pb&nbsp;datov\u00e1n\u00ed zirkonu potvrzuj\u00ed, \u017ee ob\u011b facie intrudovaly ve stejn\u00e9 dob\u011b, p\u0159ed cca 337 mili\u00f3ny let (Truba\u010d et al., v&nbsp;tisku). Centr\u00e1ln\u00ed \u010d\u00e1st t\u011blesa byla prora\u017eena mlad\u0161\u00ed, nyn\u00ed \u0161patn\u011b odkrytou, intruz\u00ed jemnozrnn\u00e9ho dvojsl\u00eddn\u00e9ho leukogranitu tzv.&nbsp;jevansk\u00e9ho typu a&nbsp;ji\u017en\u00ed okraj plutonu je lemov\u00e1n ~1 km \u0161irokou z\u00f3nou \u010detn\u00fdch \u017eil pegmatit\u016f, mikrogranit\u016f a&nbsp;aplit\u016f s&nbsp;v\u00fdrazn\u00fdm nabohacen\u00edm b\u00f3rem, c\u00ednem, niobem a&nbsp;tantalem..<\/p>\n\n\n\n<p>Z\u00e1padn\u00ed kontakty \u0159\u00ed\u010dansk\u00e9ho plutonu s&nbsp;neoproterozoick\u00fdmi a&nbsp;kambrick\u00fdmi metasedimenty tepelsko- barrandiensk\u00e9 oblasti je intruzivn\u00ed, s&nbsp;v\u00fdraznou kontaktn\u00ed metamorf\u00f3zou. V\u00fdchodn\u00ed okraj je zakryt permokarbonsk\u00fdmi sedimenty, jejich\u017e baz\u00e1ln\u00ed slepence obsahuj\u00ed valouny \u0159\u00ed\u010dansk\u00e9 \u017euly. Jak uvid\u00edme v&nbsp;lomu \u017dernovka, pro centr\u00e1ln\u00ed facii \u0159\u00ed\u010dansk\u00e9ho plutonu je charakteristick\u00fd v\u00fdskyt velk\u00fdch mafick\u00fdch mikrogranul\u00e1rn\u00edch enkl\u00e1v, je\u017e jsou hybridn\u00ed, drasl\u00edkem bohat\u00e9 a&nbsp;ukazuj\u00ed i&nbsp;dal\u0161\u00ed afinity k&nbsp;durbachitick\u00fdm magmat\u016fm. Jsou \u010dasto asociov\u00e1ny s&nbsp;n\u00e1padn\u00fdmi akumulacemi K-\u017eivcov\u00fdch vyrostlic. Tato asociace ukazuje na slo\u017eit\u00e9 interakce mezi bazick\u00fdmi a&nbsp;kysel\u00fdmi magmaty, a&nbsp;tak\u00e9 t\u00e9m\u011b\u0159 utuhl\u00fdmi K-\u017eivcov\u00fdmi kumul\u00e1ty, a&nbsp;to z\u0159ejm\u011b v&nbsp;n\u011bkolika st\u00e1di\u00edch.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"778\" height=\"1024\" src=\"https:\/\/beta.svetkamene.eu\/wp-content\/uploads\/2020\/06\/varisky_plutonicky_komplex-778x1024.png\" alt=\"\" class=\"wp-image-1508\" srcset=\"https:\/\/svetkamene.eu\/wp-content\/uploads\/2020\/06\/varisky_plutonicky_komplex-778x1024.png 778w, https:\/\/svetkamene.eu\/wp-content\/uploads\/2020\/06\/varisky_plutonicky_komplex-228x300.png 228w, https:\/\/svetkamene.eu\/wp-content\/uploads\/2020\/06\/varisky_plutonicky_komplex-768x1011.png 768w, https:\/\/svetkamene.eu\/wp-content\/uploads\/2020\/06\/varisky_plutonicky_komplex.png 1117w\" sizes=\"(max-width: 778px) 100vw, 778px\" \/><figcaption><em>Obr. 1: a&nbsp;&#8211; Pozice varisk\u00e9ho st\u0159edo\u010desk\u00e9ho plutonick\u00e9ho komplexu (SPK) v&nbsp;\u010cesk\u00e9m masivu. <br>b &#8211;  Sch\u00e9ma SPK a&nbsp;jeho rozd\u011blen\u00ed do magmatick\u00fdch suit. <br>c &#8211; Geologick\u00e1 skica \u0159\u00ed\u010dansk\u00e9ho plutonu s&nbsp;vyzna\u010denou pozic\u00ed nav\u0161t\u00edven\u00e9ho lomu \u017dernovka (Janou\u0161ek et al., 2014). <\/em><\/figcaption><\/figure>\n\n\n\n<div style=\"height:26px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><em>Pro Sv\u011bt kamene poskytl autor: RNDr. Barbora Dud\u00edkov\u00e1 Schulmannov\u00e1<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0158\u00ed\u010dansk\u00fd pluton tvo\u0159\u00ed t\u011bleso p\u0159ibli\u017en\u011b eliptick\u00e9ho pr\u016f\u0159ezu (13 \u00d7 9 km). Jak uk\u00e1zal ji\u017e Katzer&#8230;<\/p>\n","protected":false},"author":1,"featured_media":1508,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[372,336],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Krajem kamen\u00edk\u016f na \u0158\u00ed\u010dansku \u2013 Lom \u017dernovka, 2. d\u00edl - Sv\u011bt Kamene<\/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:\/\/svetkamene.eu\/index.php\/cs\/2020\/04\/18\/krajem-kameniku-na-ricansku-cast-2-b-lom-zernovka\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Krajem kamen\u00edk\u016f na \u0158\u00ed\u010dansku \u2013 Lom \u017dernovka, 2. d\u00edl - Sv\u011bt Kamene\" \/>\n<meta property=\"og:description\" content=\"\u0158\u00ed\u010dansk\u00fd pluton tvo\u0159\u00ed t\u011bleso p\u0159ibli\u017en\u011b eliptick\u00e9ho pr\u016f\u0159ezu (13 \u00d7 9 km). 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