Results 261 to 270 of about 64,380 (320)
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A Silurian placoderm with osteichthyan-like marginal jaw bones
Nature, 2013Min Zhu, Xiaobo Yu, Per E Ahlberg
exaly +2 more sources
Characterizing the pore structure in the Silurian and Permian shales of the Sichuan Basin, China
Marine and Petroleum Geology, 2015T. Cao +5 more
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Soviet Economy, 2018
The Wulonggou area in the Eastern Kunlun Orogen (EKO) in Northwest China is characterized by extensive granitic magmatism, ductile faulting, and orogenic gold mineralizations.
Q. Ding +4 more
semanticscholar +1 more source
The Wulonggou area in the Eastern Kunlun Orogen (EKO) in Northwest China is characterized by extensive granitic magmatism, ductile faulting, and orogenic gold mineralizations.
Q. Ding +4 more
semanticscholar +1 more source
Journal of the Geological Society, 1990
A detailed stratigraphical study of the Silurian rocks of the Pyrenees and analysis of their graptolite and conodont faunas has allowed the construction of composite lithostratigraphical successions and accurate correlations between them. The lithostratigraphy reflects generally continuous deposition of pelitic and shale sediments across the whole of ...
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A detailed stratigraphical study of the Silurian rocks of the Pyrenees and analysis of their graptolite and conodont faunas has allowed the construction of composite lithostratigraphical successions and accurate correlations between them. The lithostratigraphy reflects generally continuous deposition of pelitic and shale sediments across the whole of ...
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Quarterly Journal of the Geological Society of London, 1876
I n a paper read last session before the Society, I pointed out some of the most important features of the Hæmatite deposits that occur in the Carboniferous Limestone of Cumberland and Lancashire. Amongst other things I showed that the direction of the deposits was invariably parallel to that of the meridional ...
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I n a paper read last session before the Society, I pointed out some of the most important features of the Hæmatite deposits that occur in the Carboniferous Limestone of Cumberland and Lancashire. Amongst other things I showed that the direction of the deposits was invariably parallel to that of the meridional ...
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Geological Society, London, Special Publications, 1964
Summary Radiometric dates for the Silurian at present depend upon determinations on sediments. Available data suggest a time-span of up to about 50 m.y. for the Silurian period, with upper and lower limits of bout 390 m.y. and 440 m.y. Relations between graptolite zones and the time-scale imply a stratigraphical precision of about 1 m.y ...
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Summary Radiometric dates for the Silurian at present depend upon determinations on sediments. Available data suggest a time-span of up to about 50 m.y. for the Silurian period, with upper and lower limits of bout 390 m.y. and 440 m.y. Relations between graptolite zones and the time-scale imply a stratigraphical precision of about 1 m.y ...
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Biodiversity patterns of Silurian Radiolaria
Earth-Science Reviews, 2017Abstract Data analysis of all published and well-dated Silurian radiolarian localities was conducted with the goal of revealing long-term patterns in Silurian radiolarian biological diversity. The chronostratigraphic distribution of 161 species was compiled from 25 publications, each selected because of their independent age control.
Claude Monnet +5 more
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1978
The newly agreed-upon Silurian-Devonian boundary is an excellent example of a modern high precision definition of a stratotype boundary, based on biostratigraphic evidence. The Ordovician-Silurian boundary is being studied by a working group under two subcommittees (Ordovician and Silurian). The biostratigraphic factual material forms an excellent base
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The newly agreed-upon Silurian-Devonian boundary is an excellent example of a modern high precision definition of a stratotype boundary, based on biostratigraphic evidence. The Ordovician-Silurian boundary is being studied by a working group under two subcommittees (Ordovician and Silurian). The biostratigraphic factual material forms an excellent base
openaire +2 more sources