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标题：PRECAMBRIAN AND PALAEOZOIC BASEMENTOF THE CARPATHIAN FOREDEEP AND THE ADJACENT OUTER CARPATHIANS (SE POLAND AND WESTERN UKRAINE)
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作者：Elbieta MACHANIEC ; Renata JACH ; Micha GRADZISKI 等
期刊名称：Rocznik Polskiego Towarzystwa Geologicznego
印刷版ISSN：0079-3663
出版年度：2011
卷号：81
期号：3
页码：221-239
语种：English
出版社：Polskie Towarzystwo Geologiczne
摘要：Nummulites-Discocyclina bioclastic packstone and Discocyclina rudstone occur in the transgressive sequence of the Middle–Upper Eocene deposits in the Tatra Mts. The succession of the studied facies is a direct response to a rapid environmental change, related to progressive deepening. Facies transition from Nummulites- Discocyclina bioclastic packstone of proximal mid-ramp to Discocylina rudstone of distal mid- and outer-ramp is an exemplary record of a deposition during deepening conditions. Increasing of diversity of the genus Discocyclina, decreasing of diversity of other foraminifera up the section and vertical variation of orthophragminid mor- photypes from the ovate- through saddle- to the disc-shaped tests are related to deepening and shadowing of the depositional environment.
关键词：Larger benthic foraminifera;orthophragminids;morphotype;transgression;palaeoenvironment;Eocene;Tatra Mts;Western Carpathians