Results 241 to 250 of about 58,521 (270)

Reducing time-scale uncertainty for the Devonian by integrating astrochronology and Bayesian statistics

, 2014
Dealing with uncertainties is inherent to the scientific process. In the process of building geologic time scales, the reported uncertainties are at least as important as the estimates of the numerical ages. Currently all time scales for the Devonian are
D. Vleeschouwer, A. Parnell
semanticscholar   +1 more source

Thermophysical Properties Of Devonian Shales

SPE Annual Technical Conference and Exhibition, 1979
Abstract A detailed study of the thermophysical properties of Devonian shales from the central and eastern United States has been carried out. The properties encompass a wide spectrum of material properties such as thermal conductivity, thermal diffusivity, specific heat, dielectric constant and sonic velocities ...
Joel B. DuBow, Krishnan Rajeshwar
openaire   +3 more sources

Devonian radiolarians of Russia

Paleontological Journal, 2011
This study is devoted to the comprehensive description of radiolarians, the discussion of their morphology, problems of classification, and their role in the history of the Earth’s biosphere. It contributes to the solution of the fundamental problems of the evolution of the organic world, aiming at the reconstruction of the dynamics of radiolarian ...
E. O. Amon, M. S. Afanasieva
openaire   +2 more sources

Characterizing the shale gas resource potential of Devonian–Mississippian strata in the Western Canada sedimentary basin: Application of an integrated formation evaluation

, 2008
Devonian–Mississippian strata in the northwestern region of the Western Canada sedimentary basin (WCSB) were investigated for shale gas potential.
D. Ross, R. Bustin
semanticscholar   +1 more source

Devonian eustatic fluctuations in Euramerica

, 1985
The Devonian System of Euramerica contains at least 14 transgressive-regressive (T-R) cycles of eustatic origin. These are separated into three groups (or depophases) and from Carboniferous cycles by three prominent regressions.
J. G. Johnson, G. Klapper, C. Sandberg
semanticscholar   +1 more source

Petrological, geochemical, isotopic, and geochronological constraints for the Late Devonian–Early Carboniferous magmatism in SW Gondwana (27–32°LS): an example of geodynamic switching

International journal of earth sciences, 2018
J. Dahlquist, P. Alasino, M. Basei, Matías M. Morales Cámera, Marcos Macchioli Grande, Mario da Costa Campos Neto   +5 more
semanticscholar   +1 more source

Devonian integrative stratigraphy and timescale of China

Science China. Earth Sciences, 2018
Wenkun Qie, Xueping Ma, Honghe Xu, Li Qiao, Kun Liang, Wen-Yi Guo, Junjun Song, Bo Chen, Jian‐Feng Lu   +8 more
semanticscholar   +1 more source

Devonian Correlation Table [PDF]

Senckenbergiana lethaea, 2003
openaire   +1 more source

The Base of the Devonian and an Early Devonian Graptolite Succession in Central Nevada

Geological Society of America Bulletin, 1970
A consensus has developed among stratigraphers interested in the Silurian-Devonian boundary that the Monograptus uniformis graptohte zone should be the base of the Devonian. Use of that zone as the base of the Devonian makes correlation with it relatively easy as significant evolutionary developments m several fossil groups have been recognized close ...
openaire   +2 more sources

Frasnian Late Devonian conodont biostratigraphy in New York: graphic correlation and taxonomy

Journal of Paleontology, 2016
G. Klapper, W. Kirchgasser
semanticscholar   +1 more source