- Tytuł:
-
Litologia i zespół akritarchowy formacji z Zalesia w Górach Świętokrzyskich na tle zmian poziomu morza i paleogeografii późnego ordowiku
Lithology and acritarch assemblage of the Zalesie Formation in the Holy Cross Mountains on the background of the Late Ordovician paleogeography and sea-level changes - Autorzy:
-
Trela, W.
Szczepanik, Z. - Powiązania:
- https://bibliotekanauki.pl/articles/2074684.pdf
- Data publikacji:
- 2009
- Wydawca:
- Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
- Tematy:
-
hirnant
regresja
akritarchy
warstwy osadowe wtórne
Polska
Hirnantian
regression
acritarchs
redeposition
Polska - Opis:
- The uppermost Ordovician in the Holy Cross Mountains is represented by sandy mudstones, sandstones and marls of the Zalesie Formation deposited during the Hirnantian regression. Two arcitarch assemblages were recognized in the studied Upper Ordovician succession of the southern Holy Cross Mountains. The first one is dominated by species of Baltisphaeridium, Polygonium, Exculibranchium, Orthosphaeridium, Ordovicidium, Peteinosphaeridium, Multiplicisphaeridium, which occur in the upper Caradoc deposits. Upward in the section, these taxa are replaced mainly by diversified species of Veryhachium occurring together with Domasia, Deunfia, Leiofusa, Polygonium, Cheleutochroa, Multiplicisphaeridium and Polygonium. In the Zalesie Formation (upper Ashgill) they are accompanied by the redeposited Furongian/Lower Ordovician specimens and the Middle Ordovician species of the peri-Gondwanian affinity (e.g. Frankea), which were likely transported from Avalonia during collision of this terrane with Baltica.
- Źródło:
-
Przegląd Geologiczny; 2009, 57, 2; 147-157
0033-2151 - Pojawia się w:
- Przegląd Geologiczny
- Dostawca treści:
- Biblioteka Nauki
Artykuł