Results 51 to 60 of about 1,937 (211)

Frasnian-Famennian high resolution carbon isotope data from Poland, Kowala section

open access: yes, 2017
Frasnian-Famennian high resolution carbon isotope data from Poland, Kowala ...
Day, James E   +15 more
core   +1 more source

Frasnian-Famennian high resolution carbon isotope data from South China, Fuhe section

open access: yes, 2017
Frasnian-Famennian high resolution carbon isotope data from South China, Fuhe ...
Day, James E   +15 more
core   +1 more source

CONODONT BIOSTRATIGRAPHY OF UPPER DEVONIAN TEPHRA BEARING DEPOSITS IN THE İSTANBUL-ZONGULDAK TERRANE, NW TURKEY: INSIGHTS ON THE KELLWASSER EVENTS

open access: yesRivista Italiana di Paleontologia e Stratigrafia
New evidence for a biostratigraphic assessment of the limestone succession comprising K‐bentonite levels exposed in the Yılanlı Formation of the Istanbul-Zonguldak Terrane are provided from conodonts at the Gavurpınarı quarry in Bartın area (NW Turkey).
AYŞE ATAKUL-ÖZDEMIR   +4 more
doaj   +1 more source

New Zealand Geological Timescale 2025

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes   +13 more
wiley   +1 more source

Biostratigraphy and biogeography of Frasnian, Upper Devonian conodonts [PDF]

open access: yesThe Paleontological Society Special Publications, 1992
Analysis of Frasnian conodont sequences in the Montagne Noire, southern France, results in the recognition of a conventional zonation consisting of thirteen zones. Graphic correlation of eight Montagne Noire sections with a total of 11 sections in the Alberta Rockies, the Hay River-Trout River areas of the southern Northwest Territories, Canada, the ...
openaire   +1 more source

Frasnian-Famennian low resolution carbon isotope data from Poland, Kowala section

open access: yes, 2017
Frasnian-Famennian low resolution carbon isotope data from Poland, Kowala ...
Day, James E   +15 more
core   +1 more source

Upper Devonian mercury record from North America and its implications for the Frasnian–Famennian mass extinction

open access: yes, 2021
The Frasnian–Famennian biotic crisis (~372 Ma) was one of the “big five” mass extinction events in the Phanerozoic. This event was associated with dramatic climatic and oceanographic perturbations, including oceanic anoxia, global cooling, sea-level ...
Percival, Lawrence M.E.   +7 more
core   +1 more source

Sediment‐stressed reefs over the past 420 Myr

open access: yesThe Depositional Record, Volume 12, Issue 1, February 2026.
In order to fully elucidate the relationship between siliciclastic sedimentation and reef development, there needs to be a significant step change in how we record ancient and recent reefs. Only through the collection of constrained quantitative data, we can progress beyond the largely conjectural associations postulated for many ancient reefal systems.
Tanja Unger   +4 more
wiley   +1 more source

Frasnian-Famennian stable isotopes ratios of H-32 drill core, Iowa

open access: yes, 2017
Frasnian-Famennian stable isotopes ratios of H-32 drill core ...
Day, James E   +15 more
core   +1 more source

FRASNIAN AND VISEAN-NAMURIAN CONODONT FAUNAS AT PRAPROTNO, SLOVENIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2017
Conodont faunas from the limestone pebbles of the Upper Paleozoic Conglomerate at Praprotno, Slovenia demonstrate the presence of two faunas. The older fauna, marked by Palmatolepis surecta and Polygnathus decorosus is indicative of the Frasnian stage ...
TEA KOLAR-JURKOVSEK, BOGDAN JURKOVSEK
doaj   +1 more source

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