Temat: microfossils - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Palaeontological analysis of Middle Miocene siltstones at Wiślica (Carpathian Foredeep, Poland)
Autorzy:: Płonka, K.
Powiązania:: https://bibliotekanauki.pl/articles/94418.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: microfossils
foreland basin
foraminifera
palaeoecology
mikroorganizmy
dorzecze
paleoekologia
Opis:: Middle Miocene siltstones of the Skawina Formation that crop out at Wiślica, within the axial part of the Carpathian Foredeep in Poland, were analysed. The deposits studied contain numerous benthic and planktonic foraminifera, ostracods, echinoid spines, bryozoans, bivalves and otoliths. The fossils recognised document an early ‘Badenian’ (= Langhian in the Mediterranean area), or, more precisely, ‘Moravian’ age of the deposit. Palaeoecological analysis suggests normal-marine conditions with full salinity. The studied siltstones were deposited from middle–lower shoreface to lower–offshore, warm surface water and locally suboxic to dysoxic conditions in the sediment.
Źródło:: Geologos; 2017, 23, 1; 29-43
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: New data on Callovian (Middle Jurassic) belemnites and palynomorphs from the Northern Caucasus, southwest Russia
Autorzy:: Dzyuba, O. S.
Goryacheva, A. A.
Ruban, D. A.
Gnezdilova, V. V.
Zayats, P. P.
Powiązania:: https://bibliotekanauki.pl/articles/94375.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:: macroinvertebrates
microfossils
condensed section
Mesozoic
Adygeja
makrobezkręgowce
mikroskamieliny
mezozoik
Opis:: Palaeontological data on the Caucasus are highly important for large-scale stratigraphical and palaeobiogeographical assessment of the northern Tethyan margin, but this information is often scarce and not available in English. Field studies in the Northern Caucasus have now permitted to amass some new data. Two belemnite species are described from the stratotype section of the Kamennomostskaja Formation (Callovian, Middle Jurassic) near the town of Kamennomostskij in Adygeja (Northern Caucasus). These are Belemnopsis subhastata (von Zieten, 1831) and Rhopaloteuthis ominosa Gustomesov, 1968. The latter is a rare species, and the present find allows new insights into its taxonomy. A palynological analysis of the belemnite-bearing sample was carried out, and a diverse assemblage of dinocysts, acritarchs and prasinophytes, plus pollen and spores recognised. The most abundant palynomorphs are Micrhystridium and Classopollis. Data on belemnites coupled with those on palynomorphs indicate the early Callovian age of the sample level. This interpretation differs slightly from previous conclusions based on ammonites and dinocysts. If this age is correct, the degree of condensation of Callovian deposits in the section studied was lesser than previously assumed.
Źródło:: Geologos; 2016, 22, 1; 49-59
1426-8981
2080-6574
Pojawia się w:: Geologos
Dostawca treści:: Biblioteka Nauki

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