Results 11 to 20 of about 8,052 (221)

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 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.
Ying Cui   +4 more
wiley  

+5 more sources

Aras Valley (northwest Iran): high-resolution stratigraphy of a continuous central Tethyan Permian–Triassic boundary section [PDF]

open access: yesFossil Record, 2020
The Permian–Triassic boundary section in the Aras Valley in NW Iran is investigated with respect to carbonate microfacies, biostratigraphy (particularly conodonts, nautiloids, and ammonoids), chemostratigraphy (carbon isotopes), and environmental setting.
J. Gliwa   +12 more
doaj   +1 more source

New group of the Early Palaeozoic conodont-like fossils [PDF]

open access: yesEstonian Journal of Earth Sciences, 2015
The paper is devoted to the Upper Cambrian and Tremadocian organophosphatic microfossils which were hitherto treated as conodonts and assigned mainly to the genera Coelocerodontus and Viirodus.
Hubert Szaniawski
doaj   +1 more source

General regularities in the development Gzhelian-Asselian conodonts

open access: yesЛитосфера, 2020
Subject of study. The features of the evolutionary changing of Gzhelian-Asselian conodonts are examined. Materials. The data on Ural and North American conodonts are used. Results.
V. V. Chernykh
doaj   +1 more source

Lower and Middle Ordovician conodonts from the subsurface of SE Estonia and adjacent Russia [PDF]

open access: yesEstonian Journal of Earth Sciences, 2011
The distribution of conodonts in the Lower–Middle Ordovician beds was studied in five drill core sections of south­eastern Estonia. Ten conodont zones and six subzones, from the Paroistodus proteus Zone to the Eoplacognathus lindstroemi Subzone, were ...
Viive Viira
doaj   +1 more source

The detailed Middle to early Late Ordovician faunal succession and δ13Ccarbon chemistry of the Kårehamn drill core, offshore eastern Öland, Sweden: implications for stratigraphy and correlation [PDF]

open access: yesEstonian Journal of Earth Sciences, 2023
The Middle to lower Upper Ordovician stratigraphy of the Kårehamn core, drilled ca 7 km offshore to the east of the Kårehamn village, northeastern Öland, is presented. The investigated core is one of four drill cores obtained during the preparation of
Svend Stouge   +4 more
doaj   +1 more source

Late Carboniferous biota from the Ljubija iron mine area, Bosnia and Herzegovina

open access: yesGeologija, 2021
The Olistostrome member of the Sana-Una Paleozoic complex of the Ljubija ore mine in Bosnia and Herzegovina contains limestone fragments of pebble to block size that have been examined paleontologically. The recovered conodont fauna of the first sample
Aleksej MILOŠEVIĆ   +5 more
doaj   +1 more source

Late Triassic (Rhaetian) conodonts and ichthyoliths from Chile [PDF]

open access: yes, 2000
The Late Triassic of the back arc Domeyko Basin, Chile is characterized by the onset of marine sedimentation that persisted throughout the rest of the Mesozoic.
Sansom, Ivan J.
core   +1 more source

High resolution carbon isotope stratigraphy of the basal Silurian stratotype (Dob's Linn, Scotland) and its global correlation [PDF]

open access: yes, 1997
Since its designation as the Global Stratotype Section and Point (GSSP) for the base of the Silurian System, the choice of Dob's Linn, Southern Scotland, has received criticism due to the difficulties of relating its well constrained graptolite ...
Brenchley, P.J.   +3 more
core   +1 more source

Сonodonts from the boundary Artinskian-Kungurian deposits of Mechetlino section (Bashkortostan, the Southern Urals) Article I. Characteristic of the conodont associations

open access: yesЛитосфера, 2018
The description of the section of Artinskian-Kungurian boundary deposits on Yuryuzan River right coast near the village Mechetlino is given. The low systematic diversity and vare low frequency of conodonts in the Artinskian-Kungurian interval in the ...
Valerii V. Chernykh
doaj   +1 more source

Home - About - Disclaimer - Privacy