Results 251 to 260 of about 29,214 (295)
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The Cenomanian deposits of south-east Devonshire
Proceedings of the Geologists' Association, 1961Abstract The distribution, lithology and regional variations in the thickness of the Cenomanian deposits in south-east Devon are summarised. Three distinctive facies are recognised, viz. (i) the Lower Chalk facies, (ii) the Cenomanian Limestone facies, and (iii) the calcareous sand or Wilmington facies. A detailed description is given of the lateral
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Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2021
Isaac Fea +6 more
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Isaac Fea +6 more
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A Milankovitch scale for Cenomanian time
Terra Nova, 1989ABSTRACTA detailed cyclostratigraphy is present in the rhythmically bedded Cenomanian hemipelagic chalks of the northern Anglo‐Paris Basin, which can be correlated over 100,000 km2. Individual decimetre‐scale couplets probably represent the precession cycle (modes at 18 or 23 kyr), and can be readily grouped in sets averaging five, indicative of the ...
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2017
Le développement de la stratigraphie au xixesiècle connaît une innovation décisive en 1842 lorsqu’Alcide d’Orbigny intro-duit la notion d’étage géologique. Les étages sont définis dans unecertaine zone géographique qui montre une coupe type, ou stra-totype, permettant l’identification de l’unité géologique.
Morel, Nicolas +2 more
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Le développement de la stratigraphie au xixesiècle connaît une innovation décisive en 1842 lorsqu’Alcide d’Orbigny intro-duit la notion d’étage géologique. Les étages sont définis dans unecertaine zone géographique qui montre une coupe type, ou stra-totype, permettant l’identification de l’unité géologique.
Morel, Nicolas +2 more
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Cenomanian oysters from the Sergipe Basin, Brazil
Cretaceous Research, 1999Cenomanian (mid Cretaceous) oysters from the Sergipe Basin in northeastern Brazil are described, with revisions of previously described forms. Nine genera and subgenera, including eleven species, are distinguished: Rastellum diluvianum (Linne, 1767), Amphidonte (Ceratostreon) reticulata (Reuss, 1846), A.
Jens Seeling, Peter Bengtson
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Some Cenomanian Foraminifera from Northwestern Libya
Micropaleontology, 1966Thomasinella punica, Buccicrenata libyca n.sp., and Praealveolina cretacea tenuis from the lower Cenomanian (Cretaceous) Ain Tobi formation of the Kussabat area, northwest Libya, are described. Data on the stratigraphy of the section exposed along the Homs-Kussabat road are included.
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Paleointensity behavior in Barremian–Cenomanian (Cretaceous)
International Journal of Geomagnetism and Aeronomy, 2004Fragmentary knowledge on geomagnetic field intensity in Barremian–Cenomanian stageobtained from sediment rocks is summarized. Three types of periodical variations arerevealed in the paleointensity behavior. The types differ by the amplitude and duration(tens of millennia, hundreds of millennia and more than million years).
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Nodosaurid Ankylosaur from the Cenomanian of Japan
Journal of Vertebrate Paleontology, 2005(2005). Nodosaurid Ankylosaur from the Cenomanian of Japan. Journal of Vertebrate Paleontology: Vol. 25, No. 1, pp. 240-245.
Hiroshi Hawakaya +2 more
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The Albian-Cenomanian boundary in northern California
Geological Society of America Bulletin, 1996There is no internationally agreed-upon stratotype for the Albian-Cenomanian (Lower Cretaceous–Upper Cretaceous) boundary. Type sections in France for the Albian and Cenomanian Stages are inadequate for this purpose. The proposed boundary stratotype sections in North Africa and Texas that were discussed in Copenhagen at the 1983 Third International ...
Michael A. Murphy, Peter U. Rodda
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