Results 11 to 20 of about 9,274 (231)

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

Givetian/Frasnian (Middle/Upper Devonian) transition in the eastern Taurides, Turkey [PDF]

open access: yesTURKISH JOURNAL OF EARTH SCIENCES, 2019
Devonian strata, including siliciclastic and carbonate rocks that were deposited in shallow marine to coastal environments, are widely distributed in the eastern Taurides of southern Turkey. To document the regional formation of the Givetian (Middle Devonian)/ Frasnian (Upper Devonian) boundary, a section in the eastern Taurides was studied in high ...
Recep ÖZKAN   +11 more
openaire   +5 more sources

Devonian-Carboniferous palynoflora [PDF]

open access: yes, 2020
Palynomorph assemblages and palynofacies analysis have been performed on several core samples from the Devonian–Carboniferous deposits identified in five wells located in the eastern part of the Moesian Platform.
Daniel Tabara (8670849)
core   +3 more sources

Allopatric molting of Devonian trilobites

open access: yesScientific Reports, 2022
Trilobite exuviae record the development of individual trilobites and their molting process and can also contain information on their behavior. The silt- to fine-grained tuffites of the middle part of the Middle Member of the Upper Devonian Hongguleleng ...
Ruiwen Zong, Yiming Gong
doaj   +1 more source

The cranial endocast of the Upper Devonian dipnoan ‘Chirodipterus’ australis [PDF]

open access: yesPeerJ, 2018
One of the first endocasts of a dipnoan (lungfish) to be realised was that of the Upper Devonian taxon Chirodipterus australis. This early interpretation was based on observations of the shape of the cranial cavity alone and was not based on a natural ...
Struan A.C. Henderson, Tom J. Challands
doaj   +2 more sources

The stratigraphie distribution of antiarch remains (Pisces, Placodermi) in Devonian of southern regions of Russia

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
The stratigraphic distribution of antiarch remains in the Middle-Upper Devonian of central, southern and east-south regions of East European Platform (EEP), western slope of South Urals and Siberia are analyzed.
S. V. Moloshnikov
doaj   +1 more source

Comparison among related Middle-Upper Devonian lycopsids from China. [PDF]

open access: yes, 2018
Comparison among related Middle-Upper Devonian lycopsids from China.
Li Cheng-Sen (5504234)   +4 more
core   +1 more source

GIVETIAN–FRASNIAN BOUNDARY CONODONTS FROM KERMAN PROVINCE, CENTRAL IRAN

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2013
The Middle - Late Devonian boundary is investigated based on twenty-two conodont species and subspecies from three sections in the north and west of Kerman, southeastern central Iran.
HOSSEIN GHOLAMALIAN   +4 more
doaj   +1 more source

Middle Devonian lycopsids from high southern palaeolatitudes of Gondwana (Argentina) [PDF]

open access: yes, 2002
Fossil plants are described from the upper part of the Devonian Lolén Formation, Sierra de la Ventana, Buenos Aires Province, Argentina, in the area of Estancia Las Acacias. The sequence is composed mainly of dark grey shales, and fossils were found in a
Cingolani, C. A.   +7 more
core   +1 more source

Geochemical characteristics and genesis of the Middle Devonian and the Middle Permian natural gas in the Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2020
Breakthroughs have been made for the natural gas exploration of the Middle Devonian and the Middle Permian formations in the Sichuan Basin in recent years.
Zengye Xie   +9 more
doaj   +1 more source

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