Results 121 to 130 of about 27,665 (229)

Givetian and early Frasnian conodonts from the Compte Section (Middle-Upper Devonian, Spanish Central Pyrenees)

open access: yes, 2008
The Givetian and Frasnian conodont succession investigated in the Compte section (Spanish Pyrenees) is subdivided into nine Givetian standard conodont zones and two Frasnian zones (MN zones). This succession allows precise identification of the lower/middle Givetian, middle/upper Givetian and of the Givetian-Frasnian boundaries by means of index ...
Liao, Jau-Chyn   +1 more
openaire   +1 more source

Decision on the Boundary Stratotype for the Middle/Upper Devonian Series Boundary

open access: yesEpisodes, 1987
Gilbert Klapper   +3 more
openaire   +2 more sources

MIOSPORE ASSEMBLAGE FROM THE LODE MEMBER (GAUJA FORMATION) IN ESTONIA AND THE MIDDLE-UPPER DEVONIAN BOUNDARY PROBLEM [PDF]

open access: yesProceedings of the Estonian Academy of Sciences. Geology, 1999
Elga Mark-Kurik   +3 more
openaire   +1 more source

Assessment of the contribution of Precambrian deposits in forming the petroleum potential of the eastern part of the Volga-Urals basin using results of modeling

open access: yesЗаписки Горного института
Consideration is given to results of geochemical analysis of organic matter and oils of the Proterozoic (the RF-V complex) and the Paleozoic (the pay intervals D2, D3, C1-2) of the eastern part of the Volga-Urals petroleum basin.
Dmitrii D. Kozhanov, Mariya Bolshakova
doaj  

Mid-Devonian ocean oxygenation enabled the expansion of animals into deeper-water habitats. [PDF]

open access: yesProc Natl Acad Sci U S A
Bubphamanee K   +11 more
europepmc   +1 more source

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