Results 41 to 50 of about 455 (173)
Biostratigraphy and biogeography of Frasnian, Upper Devonian conodonts [PDF]
The 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 ...
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Basin Research, Volume 37, Issue 6, November/December 2025.The spatial interplay between updip clastic and carbonate depositional systems and downdip detrital and biogenic mud dominated depositional systems are mapped temporally using the sequence stratigraphic method to predict the occurrence of aquifers, petroleum reservoirs and organic‐rich deposits. ABSTRACT Middle to Upper Devonian strata preserved in the
Rene Jonk, Kevin Bohacs, Ken Potma
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, 2006 The name Frasnian, which comes from the locality of Frasnes near Couvin in Belgium, was introduced by Gosselet in 1879 and was formally retained for the lower stage of the Upper Devonian by the Subcommission on Devonian Stratigraphy in 1981. The modern definition of the Frasnian is based on conodonts and the historical background of the stage is ...
Coen-Aubert, M., Boulvain, Frédéric
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Devonian strata of the Southern Timan: paleomagnetic data [PDF]
Нефтегазовая геология: Теория и практикаNew paleomagnetic determinations are presented based on a reconnaissance collection of rocks of the Frasnian and Famennian stages of the Upper Devonian, selected on the river Ukhta and river Izhma.
Iosifidi A.G., Sal'naya N.V.
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Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.Abstract Boundaries in the Phanerozoic chronostratigraphic scale are mainly precisely defined and dated, and many correspond to environmental catastrophes induced by the emplacement of LIPs. The pre‐Ediacaran geological timescale is currently subdivided by approximate absolute ages.
Shuan‐Hong Zhang +7 more
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Rivista Italiana di Paleontologia e Stratigrafia, 2012 Conodont fauna from the Upper Devonian (Frasnian) Bahram Formation at the Hur section, north of Kerman, southeast Iran, is dominated by species of Icriodus and Polygnathus. This fauna allowed discrimination of two biointervals from the Lower rhenana Zone
TAYEBEH AHMADI +2 more
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Geochemistry, Geophysics, Geosystems, Volume 26, Issue 6, June 2025.Abstract In the French Armorican Massif, the Bretonian phase of the Variscan orogeny has been defined by the Late Devonian (Famennian‐Frasnian) erosion gap, and the Early Carboniferous (Tournaisian) syntectonic terrigenous deposits of the l’Huisserie formation in the Laval basin in the Central‐North Armorican Domain, ascribed to the Armorica ...
Wei Lin, Michel Faure, Lingtong Meng
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The stages of сalcareous Algae development in the Urals during Devonian
Литосфера, 2015 The article highlights the following stages of the development microscopic Devonian Algae in the Urals: the rise of Algae in the early Devonian (Karpinski time), degradation of Algae flora during the end of Early Devonian (taltiysk time), the Middle ...
A. L. Anfimov
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LATE DEVONIAN (FRASNIAN) CORALS FROM CENTRAL DOLPO, NEPAL
Rivista Italiana di Paleontologia e Stratigrafia, 2017 Rugosa and Tabulata from the Late Devonian of central Dolpo (Nepal) belong to the genera Kuangxiastraea, Scruttonia, Sinodisphyllum, Tabulophyllum (?), Fruehwirthia gen. n., Thamnopora, Cladopora, Alveolites and Alveolitella.
HELMUT FLUEGEL, ANDREA TINTORI
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Vadose Zone Journal, Volume 24, Issue 2, March/April 2025.Abstract Soil organic carbon is essential for sustaining soil health and functioning and for achieving the United Nations Sustainable Development Goals. However, soil carbon research to date has focused predominantly on the surface horizons of soil, with fewer studies accounting for the carbon stored down the whole soil profile.
Daniel L. Evans
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