Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
A detailed study of the conodont distribution within the condensed carbonate beds around the boundary of Billingen and Volkhov Stages (Lower Ordovician, Arenig) in northwestern Russia confirms the presence of a continuous succession of conodont biozones recognized in contemporaneous sequences in Scandinavia. The Baltoniodus triangularis and Microzarkodina sp. A zones are reported for the first time from East Baltica, where carbonates of this interval underwent extensive bioturbation and are characterized by a number of closely spaced and distinctive glauconitic hardground surfaces. It has been revealed that the distribution of conodont elements around the hardground surfaces is strongly affected by bioturbation.
Язык оригинала | английский |
---|---|
Страницы (с-по) | 161-168 |
Число страниц | 8 |
Журнал | Norsk Geologisk Tidsskrift |
Том | 81 |
Номер выпуска | 2 |
Состояние | Опубликовано - 1 дек 2001 |
ID: 41858658