{"id":428,"date":"2012-10-25T18:25:33","date_gmt":"2012-10-25T17:25:33","guid":{"rendered":"http:\/\/sga.cuni.cz\/?p=428"},"modified":"2015-11-13T18:54:49","modified_gmt":"2015-11-13T17:54:49","slug":"various-products-of-volcanic-activity-in-the-neogene-arc-in-the-carpathians-slovakia","status":"publish","type":"post","link":"https:\/\/sga.cuni.cz\/?p=428","title":{"rendered":"Various products of volcanic activity in the Neogene arc in the Carpathians (Slovakia)"},"content":{"rendered":"<p>As in the previous years,<strong> the autumn field trip<\/strong> of our Student Chapter represents the main annual educational event. This year, our target was to visit various products of volcanic activity in the Neogene arc in the Carpathians (Slovakia) and inspect their associated mineralization types, ranging from skarn to porphyry, mesothermal and epithermal styles.<\/p>\n<p>During four days we were exploring different mineralization types associated with the <span style=\"text-decoration: underline;\">evolution of the Miocene \u0160tiavnica stratovolcano<\/span>: gold mineralization of the intermediate-sulfidation type in Banska \u0160tiavnica and Hodru\u0161a (museum and dump of the Roz\u00e1lia mine), magnetite skarns in \u00da\u0161krtova Dolina, and secondary mineralization in L\u2018ubietov\u00e1 and \u0160pania Dolina. We also had the opportunity to visit the secondary limnoquartzite deposits with plant remnants in the Kremnick\u00e9 Vrchy Mts.<\/p>\n<p>The area is located in the western part of Slovakia. <span style=\"text-decoration: underline;\">The Banska \u0160tiavnica ore district is situated in the central zone of the largest stratovolcano in the Central Slovakian volcanic field of Neogene age<\/span>, emplaced in the inner part of the Carpathian arc overlying the Hercynian basement. The volcanic activity was related to subduction of the flysch belt under the Carpathian arc and to subsequent back-arc extension.<\/p>\n<p>An epithermal system related to the postcaldera uplift has the dominant significance in the metallogeny of the ore district. According to their ore assemblages, the epithermal veins were divided into <span style=\"text-decoration: underline;\">three types<\/span>:<span style=\"text-decoration: underline;\"><br \/>\n<\/span><strong>1)<\/strong> <span style=\"text-decoration: underline;\">base-metal veins<br \/>\n<\/span><strong>2)<\/strong> <span style=\"text-decoration: underline;\">Au-Ag veins in\u00a0the central or western part of the horst<br \/>\n<\/span><strong>3)<\/strong> <span style=\"text-decoration: underline;\">Au-Ag veins related to marginal faults of the horst<br \/>\n<\/span>Formation of the hydrothermal system and precipitation of Au mineralization is related to the initial stage of caldera subsidence that changed the hydrologic conditions.<\/p>\n<p><a href=\"http:\/\/e-sga.org\/fileadmin\/sga\/newsletter\/news32\/SGANews32.pdf\" target=\"_blank\">SGA News No 32, page\u00a03<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>As in the previous years, the autumn field trip of our Student Chapter represents the main annual educational event. This year, our target was to visit various products of volcanic activity in the Neogene arc in the Carpathians (Slovakia) and inspect their associated mineralization types, ranging from skarn to porphyry, \u2026 <a class=\"continue-reading-link\" href=\"https:\/\/sga.cuni.cz\/?p=428\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-428","post","type-post","status-publish","format-standard","hentry","category-our-activities"],"_links":{"self":[{"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=\/wp\/v2\/posts\/428","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=428"}],"version-history":[{"count":1,"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=\/wp\/v2\/posts\/428\/revisions"}],"predecessor-version":[{"id":429,"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=\/wp\/v2\/posts\/428\/revisions\/429"}],"wp:attachment":[{"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sga.cuni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}