Results 21 to 30 of about 61,318 (247)
Oxygen isotopic paleotemperatures across the Runangan-Whaingaroan (Eocene-Oligocene) boundary in a New Zealand shelf sequence [PDF]
, 1981 Oxygen isotopic compositions of the tests of mainly benthic foraminifera, from sections of conformable Late Eocene (Runangan) to Early Oligocene (Whaingaroan) shelf mudstones, at both Cape Foulwind and Port Elizabeth, western South Island, indicate that ...
Burns, David A., Nelson, Campbell S.
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Oligocene climate dynamics [PDF]
Paleoceanography, 2004 A planktonic and benthic foraminiferal stable isotope stratigraphy of the Oligocene equatorial Pacific (Ocean Drilling Program, Site 1218) was generated at 6 kyr resolution between magnetochrons C9n and C11n.2n (∼26.4–30 Ma on a newly developed astronomically calibrated timescale).
Wade, B.S., Pälike, H.
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Open Geosciences, 2023 In this study, the reconstruction of the formation condition in the Oligocene flysch (Berati and Zhitomi section), in the Berati anticline structure, north-eastern part of the Ionian tectonic zone (Albania), is elucidated using petrographic–mineralogical
Fociro Ana +4 more
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Testing the impact of diagenesis on the delta O-18 and delta C-13 of benthic foraminiferal calcite from a sediment burial depth transect in the equatorial Pacific [PDF]
, 2013 Stable oxygen and carbon isotope (δ18O and δ13C) values measured in foraminiferal calcite are one of the primary tools used in paleoceanography. Diagenetic recrystallisation of foraminiferal calcite can act to reset primary isotopic values but its ...
Edgar, Kirsty M. +2 more
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Bulletin of the Mineral Research and Exploration, 2019 Aim of the study is to evaluate the Paleogene-Neogene sequences of Babaeski- Lüleburgaz- Muratlı-Çorlu (Southeastern Thrace, Turkey) region using the micropaleontological analysis on two borehole samples collected by Mineral Research and Exploration (MTA)
ÜMİT ŞAFAK
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Biostratigraphy of the Oligocene deposits of Pabdeh Formation based on planktonic foraminifera in Bandar Abbas area [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2020 In this research, the biostratigraphy of Oligocene deposits of the Pabdeh Formation in Bandar Abbas region is considered. For this purpose, the planktonic foraminifera was studied and identified.
Jahanbakhash Daneshian +2 more
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GEOTURISM IN AFRICA. THE SIMIEN MOUNTAINS [PDF]
Минералогия, 2021 The paper is dedicated to the geological structure of Ethiopia and Simien Mountains, which are located in the northern part of the North Ethiopian Plateau composed of Oligocene plateau basalts hosting Oligocene-Miocene shield volcanoes.
K.A. Novoselov
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Lithostratigraphy and depositional episodes of the Oligocene carbonate-rich Tikorangi Formation, Taranaki Basin, New Zealand [PDF]
, 2003 The subsurface Oligocene Tikorangi Formation is a unique and important oil producer in the onshore Waihapa-Ngaere Field, Taranaki Basin, being the only carbonate and fracture-producing reservoir within the basin. Core sample data from seven onshore wells
Hood, Steven D. +2 more
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Geologija, 2020 The crab species Plagiolophus sulcatus Beurlen, 1939 from the Oligocene (Rupelian) Kiscell Clay of Hungary is revised and its holotype is reillustrated for the first time since its original publication.
Matúš HYŽNÝ +2 more
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Temperate Oligocene surface ocean conditions offshore of Cape Adare, Ross Sea, Antarctica [PDF]
Climate of the Past, 2021 Antarctic continental ice masses fluctuated considerably during the Oligocene “coolhouse”, at elevated atmospheric CO2 concentrations of ∼600–800 ppm. To assess the role of the ocean in the Oligocene ice sheet variability, reconstruction of past ocean ...
F. S. Hoem +9 more
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