Results 21 to 30 of about 447 (181)
Publicación Electrónica de la Asociación Paleontológica Argentina, 2021 Foraminifera and calcareous nannofossils from washed drill-cuttings of three wells in the Chilean sector of the Magallanes Basin were studied. This contribution aims to identify, characterize and illustrate microfossil assemblages throughout the Cenozoic
Jens Michael Thissen +1 more
doaj +1 more source
NANNOFOSSIL EVENTS AND STRATIGRAPHY OF THE ILAM FORMATION IN ZAGROS (SW IRAN)
Rivista Italiana di Paleontologia e Stratigrafia, 2014 Exploration studies of Cretaceous system in the Zagros region are very important due to the presence large hydrocarbon fields like the Ab-Teymur oilfield.
SAEEDEH SENEMARI +2 more
doaj +1 more source
CALCAREOUS NANNOFOSSILS BIOSTRATIGRAPHY OF JADDALA FORMATION IN WELL (AJEEL-10), CENTRAL IRAQ
Bulletin of the Iraq Natural History Museum, 2021 A detailed systematic study of calcareous nannofossils was carried out for the Jaddala Formation in (Aj-10) well, Central Iraq. Seventy one species belong to twenty four genera of calcareous nannofossils were identified including sixty two of them were ...
Israa Sabah Al-Nuaimi +1 more
doaj +1 more source
The Cretaceous/Paleogene (K/Pg) boundary in the Mezdra and Lyutidol syncline, Vratza District (West-Fore Balkan, Bulgaria) [PDF]
Geološki Anali Balkanskoga Poluostrva, 2006 This paper discusses the unjustified assignment (based on calcareous nannofossils) of a large portion of the Maastrichtian strata in the Mezdra and Lyutidol synclines (West Fore Balkan, Bulgaria) to the Paleogene.
Jolkičev Nikola A.
doaj +1 more source
Rivista Italiana di Paleontologia e Stratigrafia, 2002 The relative position of 30 main bioevents pertaining to calcareous nannofossils and planktonic foraminifera was identified in the time interval between 13.75 Ma and 10.50 Ma, based on the quantitative study of the those microfossils in three ...
RODOLFO SPROVIERI +9 more
doaj +1 more source
Geologica Carpathica, 2016 We obtained material from the Puerto Escano section (southern Spain) to study the Jurassic/Cretaceous (J/K) boundary interval. The same samples had already been processed for magnetostratigraphic studies and biostratigraphic zonation based on ...
Svobodová Andrea, Kośák Martin
doaj +1 more source
Geologica Carpathica, 2018 Sediments belonging to the Oligocene Vima Formation (located in the north-western part of the Transylvanian Basin, Romania) have been investigated for calcareous nannofossils content.
Kallanxhi Mădălina-Elena +4 more
doaj +1 more source
Calcareous nannofossils at the upper part of Gurpi Formation and the lower part of Pabdeh Formation at Arkavaz section, south east Ilam [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2019 In this study the Paleocene sediments have been investigated at the upper part of Gurpi Formation and the lower part of Pabdeh Formation at Arkavaz section in southeast of Ilam.
Saeedeh Senemari
doaj +1 more source
Calcareous nannofossil biostratigraphy of Sarcheshmeh and Sanganeh formations in the west of Kopet-Dagh Basin, Sheikh Section [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2015 The Kopet-Dagh Basin is located in the north and north east of Iran, within the border triangle of Iran, Turkmenistan and Afghanistan. Sediments of Cretaceous age are well exposed in this basin.
Azam Mahanipour +1 more
doaj +1 more source
Biostratigraphy of Gurpi Formation in Samand anticline (Lurestan province) Based on calcareous nannofossils [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2017 The present study is an attempt to biostratigraphically classify the rocks of Gurpi Formation at Samand Anticline with the help of calcareous nannofossils. The succession measures 197 meters in thickness and consists of shale, marl and marly limestone. A
samira shahriyary +2 more
doaj +1 more source