Results 21 to 30 of about 1,927,269 (224)

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

An investigation of the genus Mesacanthus (Chordata: Acanthodii) from the Orcadian Basin and Midland Valley areas of Northern and Central Scotland using traditional morphometrics [PDF]

open access: yesPeerJ, 2015
Mesacanthus is a common and speciose genus of acanthodian fish from Lower Old Red Sandstone and Middle Old Red Sandstone assemblages (representing the Lower Devonian and Middle Devonian respectively) and is well represented in many palaeoichthyology ...
Matthew G. Baron
doaj   +2 more sources

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

An examination of the Devonian fishes of Michigan [PDF]

open access: yesPeerJ, 2018
We surveyed the taxa, ecosystems, and localities of the Devonian fishes of Michigan to provide a framework for renewed study, to learn about the diversity and number of these fishes, and to investigate their connection to other North American faunas ...
Jack Stack, Lauren Sallan
doaj   +2 more sources

The Early Devonian (Emsian) acrotretid microbrachiopod Opsiconidion minor Popov, 1981, from the Alaska/Yukon Territory border and Novaya Zemlya [PDF]

open access: yesEstonian Journal of Earth Sciences, 2020
New records of the poorly known acrotretid (Biernatidae) microbrachiopod Opsiconidion minor Popov are described from middle Emsian strata of the Ogilvie Formation in east-central Alaska and the adjacent Yukon Territory, Canada, and compared with new ...
Lars E. Holmer   +3 more
doaj   +1 more source

The role of conodonts in the global stratigraphic correlation on example of southern Siberia (Russia) and eastern Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2015
Conodonts are very precise tools for global stratigraphic correlation of Devonian deposits. They can be correlated at the level of standard conodont zones even for basins having very different geological structure.
Rodygin Sergei A.
doaj   +1 more source

Middle and Late Devonian paleogeography of the eastern Anti-Atlas (Morocco)

open access: yes, 2021
<jats:title>Abstract</jats:title><jats:p>The eastern Anti-Atlas of Morocco represents one of the most completely exposed and perfectly documented biostratigraphic records of the entire Devonian worldwide.
Wendt, Jobst   +2 more
core   +2 more sources

Crawlers on the Seabed – The Famous Devonian Trilobites of Gerolstein [PDF]

open access: yesGeoconservation Research, 2021
This paper introduces the Middle Devonian trilobites of Gerolstein, found on the famous trilobite fields of Gees and at the Auberg hill in Gerolstein.
Jens Koppka
doaj   +1 more source

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  

The model of the oil and gas system of the Devonian sedimentary complex of the Biloliskyy block of the Dobrudja foredeep

open access: yesВісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія, 2023
The purpose of the article is to find out the main principal features of the ontogenesis of the oil and gas system of the Devonian deposits of the Dobrudja Foredeep.
Volodymyr Hnidets   +3 more
doaj   +1 more source

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