Results 251 to 260 of about 4,741,231 (319)
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Earth-Science Reviews, 2010
Abstract This paper proposes a global review of Hirnantian event stratigraphy. The Hirnantian GSSP in south China is tentatively correlated with latest Ordovician strata from the peri-Gondwanan “glacial” regions. Problems of biostratigraphical correlation are highlighted.
A. Delabroye, M. Vecoli
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Abstract This paper proposes a global review of Hirnantian event stratigraphy. The Hirnantian GSSP in south China is tentatively correlated with latest Ordovician strata from the peri-Gondwanan “glacial” regions. Problems of biostratigraphical correlation are highlighted.
A. Delabroye, M. Vecoli
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Geological Magazine, 1983 Summary. Pleistocene deposits exposed at Alton Road Quarry, Farnham in 1980 have been sub-divided into two formal stratigraphical units of ‘member’ status. The ‘Wrecclesham Gravel’ is the lowest unit and consists primarily of fluvial sands and gravels.
Ian Bryant +4 more
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Contributions to Mineralogy and Petrology, 1992
The 1500 m thick sequence of Huronian continental volcanics at Thessalon, Ontario is subdivided into 4 volcanic cycles, each of which includes abundant early mafic end-members, central intermediate flows, and late rhyolite units. Major and trace element concentrations are dominated by extensive gabbroic fractionation trends that ultimately produced two
W. T. Jolly, A. Dickin, Tsai-way Wu
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The 1500 m thick sequence of Huronian continental volcanics at Thessalon, Ontario is subdivided into 4 volcanic cycles, each of which includes abundant early mafic end-members, central intermediate flows, and late rhyolite units. Major and trace element concentrations are dominated by extensive gabbroic fractionation trends that ultimately produced two
W. T. Jolly, A. Dickin, Tsai-way Wu
semanticscholar +3 more sources
Stratigraphy of the Wisconsin Glacial Stage along the Northwestern Shore of Lake Erie.
Science, 1957A. Dreimanis
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Stratigraphy of the Ordovician Ashgillian Stage of Western Mongolia
International Geology Review, 1980(1980). Stratigraphy of the Ordovician Ashgillian Stage of Western Mongolia. International Geology Review: Vol. 22, No. 5, pp. 575-586.
Ch. Minzhin, Kh. S. Rozman
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Moscow University Geology Bulletin, 2020
The study of the foraminiferal communities from the Paleogene–Neogene reference section at Kvachina Bay in West Kamchatka has made it possible, based on the qualitative composition and the quantitative ratios of the encountered species, to identify 13 layers with foraminifera corresponding to certain intervals of the section and to establish their ...
N. A. Fregatova +3 more
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The study of the foraminiferal communities from the Paleogene–Neogene reference section at Kvachina Bay in West Kamchatka has made it possible, based on the qualitative composition and the quantitative ratios of the encountered species, to identify 13 layers with foraminifera corresponding to certain intervals of the section and to establish their ...
N. A. Fregatova +3 more
openaire +2 more sources
Moscow University Bulletin. Series 4. Geology, 2020
The study of the paleocommunities of foraminifera of the reference section of the Paleogene-Neogene of the Kvachin Bay in Western Kamchatka made it possible, based on the qualitative composition and quantitative ratios of the species encountered, to identify 13 layers with foraminifera corresponding to certain section intervals and to establish their ...
N. A. Fregatova +2 more
openaire +2 more sources
The study of the paleocommunities of foraminifera of the reference section of the Paleogene-Neogene of the Kvachin Bay in Western Kamchatka made it possible, based on the qualitative composition and quantitative ratios of the species encountered, to identify 13 layers with foraminifera corresponding to certain section intervals and to establish their ...
N. A. Fregatova +2 more
openaire +2 more sources
Ordovician series and stages in Chinese stratigraphy: steps toward a global usage
Alcheringa: An Australasian Journal of Palaeontology, 2001The first Chinese Ordovician series was erected by Lee & Chao (1924). Since then, many regional Ordovician series and stage names have been established and mostly published in Chinese. The present study is a review of these regional units with a discussion of their definitions and correlation to the international standard. Among them, the Ichang series,
J (李军) Li +3 more
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Stratigraphy
A plethora of names has been applied to upper Cambrian and Lower Ordovician lithostratigraphic units distributed from western Utah to southeastern and central Nevada.
James F. Miller +6 more
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A plethora of names has been applied to upper Cambrian and Lower Ordovician lithostratigraphic units distributed from western Utah to southeastern and central Nevada.
James F. Miller +6 more
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