Foraminifera and calcareous nannoplankton assemblages from the Cenomania-Turonian boundary interval of the Knoviz section, Bohemian Cretaceous Basin

被引：0

作者：

Hradecka, L

Svabenicka, L

机构：

来源：

GEOLOGICA CARPATHICA | 1995年 / 46卷 / 05期

关键词：

Bohemian Cretaceous Basin; Cenomanian-Turonian boundary; foraminifera; calcareous nannofossils;

D O I：

暂无

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Boreal foraminifers and calcareous nannofossils from the Cenomanian-Turonian boundary interval of the Bohemian Cretaceous Basin were studied. Detailed analyses of foraminiferal assemblages (benthonic diversity, diversity of species, ratio plankton/benthos) showed the important changes within this interval. The benthonic species are dominant within the foraminiferal assemblages, hence the representatives of genus Gavelinella were used for the biozonation. Effects of stressed life conditions on foraminiferal assemblages were recognized within this dysaerobic boundary interval. Similar effects are observed for calcareous nannofossils in the basal Turonian sediments.

引用

页码：267 / 276

页数：10

共 6 条

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