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Fish assemblages from the Middle–Upper Devonian of the Middle Urals, Russia

open access: yesУчёные записки Казанского университета: Серия Естественные науки, 2022
New assemblages of diverse fishes from the Givetian–Famennian were described in six sections in the Middle Urals: Pokrovskoe, Baronskaya, Sulem, Pershino, Yokva, and Vilva.
A.O. Ivanov
doaj   +2 more sources

Paleomagnetic studies of the Middle-Upper Devonian section of the Voronezh anteclise (Pavlov quarry) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
New paleomagnetic determinations are presented for a collection of rocks of the Middle-Upper Devonian (Givetian and Frasnian stages), sampled from an outcrop on the southwestern slope of the Pavlov granite quarry.
Iosifidi A.G., Popov V.V.
doaj   +2 more sources

Assessing the Effect of Large Igneous Provinces on Global Oceanic Redox Conditions Using Non‐traditional Metal Isotopes (Molybdenum, Uranium, Thallium)

open access: yesGeophysical Monograph Series, Page 305-323., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Brian Kendall   +2 more
wiley  

+9 more sources

Devonian–Mississippian magmatism related to extensional collapse in Svalbard: implications for radiating dyke swarms [version 1; peer review: 2 approved] [PDF]

open access: yesOpen Research Europe
Background Despite extensive studies of the Mesozoic–Cenozoic magmatic history of Svalbard, little has been done on the Paleozoic magmatism due to fewer available outcrops.
Gillian R. Foulger   +3 more
doaj   +2 more sources

Stratigraphic distribution and systematic composition of the Middle-Upper Devonian placoderms (anti-archs) from Central Kazakhstan

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2016
The stratigraphie distribution and systematic composition of the Middle-Upper Devonian remains of antiarchs from the sediments of Central Kazakhstan are analyzed. Central Kazakhstan ichthyofauna contains mainly endemic taxons of antiarchs.
S. V. Moloshnikov
doaj   +2 more sources

Perspectives for oil and gas Paleozoic bearing strata on the junction area of the Pre-Caspian and Volga-Ural petroleum Provinces [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2022
The junction zone of such large tectonic structures as the Volga-Ural anteclise, Precaspian depression and Pre-Ural foredeep is characterized by a very complex tectonic structure, history of geological development and formation at different phases of ...
Fortunatova N.K.   +11 more
doaj   +1 more source

Middle–Late Devonian conodont fauna of the Bahram Formation in the Shahzadeh Mohammad section, North of Kerman [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2021
Devonian deposits of the Bahram Formation with a thickness of 300 m were studied based on conodont fauna in Shahzadeh Mohammad section (33 km east of Zarand, 95 km north of Kerman city) in central Iran structural Zone.
Fattaneh Zamani   +5 more
doaj   +1 more source

GOLD POTENTIAL OF THE UPPER DEVONIAN BASAL CONGLOMERATES OF THE KANIN PENINSULA (NENETS AUTONOMOUS DISTRICT, RUSSIA) [PDF]

open access: yesМинералогия, 2022
Native gold and garnets are described for the first time in heavy concentrates from coarse-grained sediments of the Upper Devonian Tayaokuyakha Formation, which occurs on the eroded Upper Riphean schists with angular and azimuthal unconformity (middle ...
M.A. Pavlova   +5 more
doaj   +1 more source

DEVONIAN-CARBONIFEROUS MAGMATISM AND METALLOGENY IN THE SOUTH URAL ACCRETIONARY-COLLISIONAL SYSTEM

open access: yesГеодинамика и тектонофизика, 2021
The oceanic stage in the history of the South Urals completed in the Ordovician – Early Silurian. The Ordovician through Devonian events in the region included the formation of an island arc in the East Ural zone from the Middle Ordovician to Silurian ...
A. M. Kosarev   +9 more
doaj   +1 more source

Devonian upper ocean redox trends across Laurussia: Testing potential influences of marine carbonate lithology on bulk rock I/Ca signals

open access: yesFrontiers in Marine Science, 2022
The Devonian is characterized by major changes in ocean-atmosphere O2 concentrations, colonialization of continents by plants and animals, and widespread marine anoxic events associated with rapid δ13C excursions and biotic crises. However, the long-term
Ruliang He   +5 more
doaj   +1 more source

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