نتایج جستجو برای: foraminifer
تعداد نتایج: 296 فیلتر نتایج به سال:
Kırkgeçit Formasyonu’nun Elazığ kuzeybatısındaki yüzeylemelerinde gerçekleştirilen bu çalışmada, Nummulites cf. garganicus Tellini, fabianii (Prever in Fabiani), ex. gr. perforatus (De Montfort), striatus (Bruguière), Operculina gomezi Colom Bauzà, Orbitoclypeus zitteli (Checchia-Rispoli), Asterocyclina ferrandezi Özcan Less, Sphaerogypsina globulus (Reuss), Gypsina mastelensis Bursch, Asteri...
We investigated the possibility of bacterial symbiosis in Globigerina bulloides, a palaeoceanographically important, planktonic foraminifer. This marine protist is commonly used in micropalaeontological investigations of climatically sensitive subpolar and temperate water masses as well as wind-driven upwelling regions of the world’s oceans. G. bulloides is unusual because it lacks the protist ...
An appropriate proxy could help to better understand dissolved oxygen variations in the past, helping predict potential outcomes of future environmental changes. In Changjiang Estuary (China), foraminifer Cribrononion subincertum (C. subincertum) shows a distinct population maximum topmost sediment, an indication epifaunal species. Therefore, geochemical composition C. tests record changes regi...
The planktonic foraminiferal species Globorotalia truncatulinoides is widely used as a biostratigraphic proxy for the Quaternary in Mediterranean region. High-resolution quantitative studies performed on sediment cores collected central and western Sea evidence significant abundance of G. during Middle Holocene. robust chronological frame allows us to date this bio-event 4.8–4.4 ka Before Prese...
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