نتایج جستجو برای: campanian

تعداد نتایج: 532  

Journal: :Iraqi geological journal 2023

The Kometan Formation is widely spread in northeastern Iraq and mostly composed of deep marine carbonates, with a predominance planktonic foraminiferal assemblages throughout its sequences. Two outcrop sections, Smaquli Tabin, were chosen to study the biostratigraphy Formation. identified 32 species belonging 12 genera. According stratigraphic distribution relative foraminifera assemblages, dem...

Journal: :Fossil Imprint 2021

Here we present LM and SEM data of pollen extant Sciadopitys verticillata, fossil Cerebropollenites from Aptian/Albian strata (Austria, Mongolia) Sciadopityspollenites Campanian/Maastrichtian Oligocene/Miocene (Siberia, Germany). Measurements image comparisons show that the investigated taxa range somewhat comparable to very similar a previous affiliation with Tsuga cannot be corroborated. Addi...

Journal: : 2023

A Detailed Calcareous nannofossil study conducted on the Bekhme Formation that is cropped out at Southern limb of Bekhere anticline, eastern ward Dohuk city near Bajlur village, northern Iraq. The composed marly limestone, Organic limestone and fossiliferous limestone. nannopaleontological classification these calcareous nannofossils led us to determine thirty-four genus/species belonging nine ...

Journal: :Litosfera 2023

Research subject. Clay-siliceous deposits of the Berezovskaya formation Cognac-Santon-Campanian age in three wells Kharampur deposit. Aim. To study mineral and structural characteristics flint matrix for separation rocks into lithotypes, namely, silicites flakes per se. Methods. X-ray diffraction analysis scanning electron microscopy. Results conclusions. The main criteria include content opal-...

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