Results 1 to 10 of about 115,566 (343)

Investigating Devonian trees as geo‐engineers of past climates: linking palaeosols to palaeobotany and experimental geobiology

open access: yes, 2015
We present the rationale for a cross‐disciplinary investigation addressing the ‘Devonian plant hypothesis’ which proposes that the evolutionary appearance of trees with deep, complex rooting systems represents one of the major biotic feedbacks on ...
Jennifer L. Morris   +10 more
semanticscholar   +1 more source

First U–Pb LA-ICP-MS Radioisotopic Ages of the Devonian–Carboniferous Boundary Black Shales (Domanik Facies) in the Kama–Kinel Trough System, Volga–Ural Petroleum Province, East European Platform

open access: yesGeoresursy
For the first time, zircons from thin volcanic ash layers contained within organic-rich black shales (Domanik facies) at the Devonian–Carboniferous boundary have been dated using the U–Pb LA-ICP-MS method.
V. V. Silantiev   +7 more
doaj   +1 more source

Dimerelloid brachiopod Dzieduszyckia from Famennian hydrocarbon seep deposits of Slaven Chert, Nevada, USA, with insights into systematics and paleoecology of the Dimerelloidea [PDF]

open access: yesActa Palaeontologica Polonica
This study describes an assemblage of Dzieduszyckia brachiopods preserved in sedimentary barite deposits from the Famennian, Upper Devonian of Nevada, USA.
RUSSELL S. SHAPIRO
doaj   +1 more source

The unique devonian sections of Dniepro-Donetsk cavity. Kolaidyntsy parametric well 413. Article 2

open access: yesМінеральні ресурси України, 2016
The article presents the results of comprehensive study materials drilling 413. When the actual depth of 5 104 m, it revealed the Anthropogenic, Quaternary, Neogene, Paleogene, Cretaceous, Jurassic, Triassic, Permian, Carbon and Devonian deposits which ...
V. A. Ivanyshyn   +4 more
doaj  

Convergent allometric trajectories in Devonian Carboniferous unornamented Polygnathus conodonts [PDF]

open access: yesActa Palaeontologica Polonica
The shape of feeding structures is reputed to be under functional constraints related to the processing of food particles. Their morphological variation through evolution and ontogeny may thus provide an insight into changes in occlu sal dynamics and ...
FÉLIX NESME   +3 more
doaj   +1 more source

Stratigraphic significance of Devonian brachiopods of the Urals

open access: yesЛитосфера, 2017
The article considers the history of the formation of the regional stratigraphic scale of the Devonian system of the Urals, historically developed on the basis of the study of benthic fauna (mainly brachiopods).
Anita G. Mizens, Larisa I. Mizens
doaj   +1 more source

From Siliciclastics to Carbonates and Black shales: Deciphering Sedimentary Continuity and Discontinuity in the Devonian Landscapes of the Volga-Ural Petroleum Province

open access: yesGeoresursy
Analyses of the three predominant types of sedimentation – siliciclastic, carbonate and black shale – revealed their discontinuity/continuity across various facies environments within the Middle and Late Devonian of the central part of the Volga-Urals ...
V. V. Silantiev   +2 more
doaj   +1 more source

Early-Devonian intrusive magmatism of the Urals as indicator critical stage Paleozoic history mobile belt

open access: yesЛитосфера, 2015
It is established that during all-Uralian stage of mantle-type magmatism of Early Devonian age (410-393 Ma) the mantle Ordovician-Silurian magmatism was changed by mantle-crustal and crustal types.
G. B. Fershtater
doaj  

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