Results 311 to 320 of about 3,560,008 (359)
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Palaeogeography, Palaeoclimatology, Palaeoecology, 1994
Abstract A study of benthic Foraminifera from the Toarcian in Quercy (Aquitaine Basin, France) shows that micropaleontological assemblages are influenced by sea level changes. The percentages of coiled, and straight Nodosarridae (Lenticulina, Citharina) differ during periods of low sea level to high sea level.
Christiane Ruget +4 more
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Abstract A study of benthic Foraminifera from the Toarcian in Quercy (Aquitaine Basin, France) shows that micropaleontological assemblages are influenced by sea level changes. The percentages of coiled, and straight Nodosarridae (Lenticulina, Citharina) differ during periods of low sea level to high sea level.
Christiane Ruget +4 more
openaire +2 more sources
Geological Society of America Bulletin, 1941
Three formations of the Belt series—Prichard, Wallace, and Striped Peak—can be traced northward from the northeastern part of the Coeur d’Alene district, Idaho, through the Trout Creek quadrangle to the northern part of the Libby quadrangle, Montana. The differences upon which the separation of the Burke, Revett, and St.
Gibson, Russell +2 more
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Three formations of the Belt series—Prichard, Wallace, and Striped Peak—can be traced northward from the northeastern part of the Coeur d’Alene district, Idaho, through the Trout Creek quadrangle to the northern part of the Libby quadrangle, Montana. The differences upon which the separation of the Burke, Revett, and St.
Gibson, Russell +2 more
openaire +3 more sources
Debatable questions of Boreal Triassic stratigraphy: boundary between middle and upper series
Russian Geology and Geophysics, 2008Abstract Various opinions on the position of the Middle/Upper Triassic boundary have been concisely reviewed. The lower boundary of the Carnian Stage is accepted at the base of the Trachyceras aon Zone. The recentmost data on biostratigraphy of boundary beds of the Ladinian and Carnian Stages of the Southern Alps, Himalayas, British ...
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The stratigraphy of the arenig series in the Aberdaron to Sarn Area, Western Llŷcn, North Wales
Geological Journal, 1988AbstractA new interpretation of the Arenig succession in the Aberdaron area is presented based on biostratigraphical correlation. A lithostratigraphy based on section correlation is presented, and three subareas are identified, each with a different stratigraphy.The Sarn Formation comprises the basal ‘flaggy’ sandstone unit in all three areas but is ...
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PALAIOS, 2000
Mesozoic and Cenozoic Sequence Stratigraphy of European Basins: SEPM Special Publication Series No. 60, P.C. de Graciansky, J. Hardenbol, T. Jaquin, and P.R. Vail (Editors), 1998, SEPM (Society for Sedimentary Geology), Tulsa, 786 p. ($175 non-members, $125 members) ISBN: 1-56576-043-3. From the mid-seventies, and especially since 1987 when Haq et al.
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Mesozoic and Cenozoic Sequence Stratigraphy of European Basins: SEPM Special Publication Series No. 60, P.C. de Graciansky, J. Hardenbol, T. Jaquin, and P.R. Vail (Editors), 1998, SEPM (Society for Sedimentary Geology), Tulsa, 786 p. ($175 non-members, $125 members) ISBN: 1-56576-043-3. From the mid-seventies, and especially since 1987 when Haq et al.
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Mathematical Geology, 1993
The importance of time-series analysis in cyclic stratigraphy is evaluated by comparing three different methods (adaptive multiple taper spectral analysis, auto-/cross-correlation analysis, cova functions) applied to stratigraphic time series from the Early Cretaceous Cismon section in northern Italy.
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The importance of time-series analysis in cyclic stratigraphy is evaluated by comparing three different methods (adaptive multiple taper spectral analysis, auto-/cross-correlation analysis, cova functions) applied to stratigraphic time series from the Early Cretaceous Cismon section in northern Italy.
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Permian integrative stratigraphy and timescale of China
Science China. Earth Sciences, 2018S. Shen +13 more
semanticscholar +1 more source
Stratigraphy of Barail Series in Southern Part of Shillong Plateau, Assam, India: GEOLOGICAL NOTES
AAPG Bulletin, 1965The Barail series (Oligocene), which includes the major petroleum reservoir rocks of India, has generally been considered to be absent in the southern part of the Shillong plateau. Palynologic investigations of samples from the Tertiary section exposed in the Simsang river region and elsewhere along the south margin of the plateau indicate that ...
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Quarterly Journal of the Geological Society of London, 1925
W. Nuttall
semanticscholar +1 more source
W. Nuttall
semanticscholar +1 more source