Results 11 to 20 of about 53,918 (269)
Ordovician scientometrics [PDF]
Estonian Journal of Earth Sciences, 2023 Scientometrics is a tool for studying the development of science to observe and analyse patterns that emerge from it. Our aim is to elucidate how the Ordovician has been studied through the years, through the perspective of the published papers, the main
Alysson Mazoni +2 more
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Coupled extinction–regression episodes revisited in mid-oceanic settings for comparative extinction study during the Palaeozoic in view of non-bolide extraterrestrial causes [PDF]
Estonian Journal of Earth Sciences, 2023 Major change in the Earthâs surface temperature appears to be the most critical and universal factor for inducing coevally multiple kill mechanisms for organisms during the global environmental change episodes.
Yukio Isozaki
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Diversification and speciation among Laurentian brachiopods during the GOBE: insights from basinal and regional analyses [PDF]
Estonian Journal of Earth Sciences, 2023 Full understanding of diversity dynamics during the Great Ordovician Biodiversification Event (GOBE) requires analyses that investigate regional and species-level data and patterns. In this study, we combine bedding-plane scale data on brachiopod species
Alycia L. Stigall +5 more
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Ordovician Bryozoa of Estonia [PDF]
Estonian Journal of Earth Sciences, 2023 sessile colonial, filter-feeding animals, many of which possess hard carbonate skeletons of different morphology. The bryozoan faunas of the Ordovician of Estonia were studied early by famous naturalists such as Karl Eduard von Eichwald and WÅadisÅaw ...
Andrej Ernst
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Fine characterization of Ordovician inner fault-controlled bodies in area A of Tarim Basin
Youqi dizhi yu caishoulu, 2023 It is a major difficulty to accurately characterize the inner fault-controlled bodies in the exploration and development of fault-controlled oil and gas reservoirs because the fault-controlled bodies are diverse in reservoir space， complicated in ...
YANG Xinrui +3 more
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Stratigraphy and facies differences of the Middle Darriwilian Isotopic Carbon Excursion (MDICE) in Baltoscandia [PDF]
Estonian Journal of Earth Sciences, 2020 The Middle Darriwilian Isotopic Carbon Excursion (MDICE) is a global isotopic event described in sections from different palaeocontinents. Here we present new stable carbon isotopic data from carbonates of ten sections in different parts of the ...
Leho Ainsaar +5 more
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The earliest cornulitid on the internal surface of the illaenid pygidium from the Middle Ordovician of Estonia [PDF]
Estonian Journal of Earth Sciences, 2017 The earliest cornulitid Cornulites sp. appears in the Darriwilian (Lasnamägi Regional Stage) of Estonia. Internal annulation is present in all Middle Ordovician cornulitids and could be a plesiomorphic character for the group.
Olev Vinn, Ursula Toom, Mare Isakar
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Shiyou shiyan dizhi, 2022 As an important type of hydrocarbon reservoir, microbial carbonate contains great amount of hydrocarbon resources. The recent discovery of industrial gas in the Majiagou Formation in the east-central part of the Ordos Basin indicates that this type of ...
Juntao ZHANG +4 more
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Conodonts in Ordovician biostratigraphy
, 2017 The long time interval after Pander's (1856) original conodont study can in terms of Ordovician conodont biostratigraphical research be subdivided into three periods, namely the Pioneer Period (1856-1955), the Transition Period (1955-1971) and the Modern
FERRETTI, Annalisa +3 more
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Acta Societatis Botanicorum Poloniae, 2022 During the Palaeozoic Era, plants conquered the land and covered greater and greater areas from coastal lowlands to highlands. Palaeobotanical data based on macroremains from Polish Palaeozoic strata complete and enrich the picture of these processes ...
Grzegorz Pacyna, Maria Barbacka
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