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Now showing items 4120-4139 of 43490
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(2004)Paleoclimate studies of continental environments have been hampered by the lack of an independent paleotemperature proxy. A novel sea-surface temperature proxy has been proposed for marine systems based on membrane lipids ...
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(2006)The Omgon Range of Western Kamchatka contains a mid to Upper Cretaceous sequence of flysch with tectonic inclusions of Jurassic-Cretaceous oceanic rocks inferred to have been imbricated together in an accretionary prism. ...
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(2006)Biostratigraphic, isotopic, and petrologic data from the Central Pontides document major southward growth of the Eurasian continental crust by subduction-accretion during the Cretaceous and Triassic Periods. A major part ...
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(2006)Information on the fossil record of angiosperms has expanded dramatically over the past twenty-five years, and in particular the discovery of numerous mesofossil floras with fossil flowers has added a completely new element ...
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(2006)A transport-reaction model was designed to identify the combination and importance of biogeochemical processes operating in four sites drilled during ODP Leg 207 (Demerara Rise, Equatorial Atlantic). Almost 100 Ma after ...
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(2003)The Koolen metamorphic dome of Chukotka Peninsula has been interpreted as a mid-Cretaceous extensional core complex. On the NW flank of the dome, three lithotectonic units are exposed: (1) High-Grade unit, composed of ...
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(2000)The present paper summarizes the results of the investigations carried out in East Russia within the framework of the International Program of Geological Correlation (350) supported by UNESCO entitled "Cretaceous Environmental ...
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(1998)The character and intensity of Cretaceous events in continental margins are genetically linked with the rate of oceanic crust accretion and intensity of endogenic (plume) activity of the Earth. This is most evidently proved ...
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(2002)These last 10 years, numerical models of mantle convection have emphasized the role of the 670 km endothermic phase change in generating avalanches that trigger catastrophic mass transfers between upper and lower mantle. ...
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(2002)The upper amphibolite facies Koolen gneiss dome was subjected to 600–800 MPa pressures and >700 °C temperatures at deep structural levels, and 400–500 MPa and ∼600 °C temperatures at shallow levels during peak metamorphism ...
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(2006)Alkaline (sodic) volcanic rocks, i.e., ankaratrites-melanephelinites, basanites-tephrites, and phonolites, dated at 119 Ma and similar in composition to the 60-Ma plugs of the Asunción Province, occur in Eastern Paraguay ...
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(2003)The Cretaceous stratigraphy and main palaeogeographic features of the North-Eastern Peri-Tethys are briefly summarised on the base of new data. The study is mainly focused on the time-slices that were chosen for the recently ...
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(2001)В юго-восточной части Корейского полуострова вдоль зон левых сдвигов Конджу-Ымсонг и Кванджу-Ёндонг располагается серия эпиконтинентальных бассейнов готерив-альбского возраста, которые, судя по их геометрии и особенностям ...
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(2006)To elucidate the age and origin of seamounts in the eastern North Atlantic, 54 titanite and 10 zircon fractions were dated by the U-Pb chronometer, and initial Pb, Sr, and Hf isotope ratios were measured in feldspars and ...
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(2003)By the Late Jurassic, the northern part of the East Asian continental margin was diversified. Principal structural constituents were the Siberian (or North Asian) craton bounded on the east by a miogeosynclinal fold belt, ...
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(1996)Both the bolide impact hypothesis and the volcanism hypothesis suggest, as one of the major environmental consequences, the release of large amounts of SO2 and CO2 into the atmosphere, with consequent lowering of the pH ...
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(2006)The Gongsuwon thrust together with the Deokpori (Gakdong) thrust in northeastern Okcheon belt is considered to be an important structure in understanding the tectonic evolution of the Korean peninsula following the ...
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(1992)The Cretaceous/Tertiary () and Permian/Triassic () events differ in many more aspects than they are similar. This alone makes it unlikely that they are parts of a common web of periodic mass extinction events (MEE). Unlike ...
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(1988)The development of the Kurile island arc is though to have begun in the Late Cretaceous. In the Neogene deposits on northern and southern islands of this ridge, including Kunashir, there are well-rounded fragments of granite ...
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(2001)The additive logratio (alr) transformation has been used in several case studies to predict regionalized compositions using standard geostatistical estimation methods such as ordinary kriging and ordinary cokriging. It is ...
Now showing items 4120-4139 of 43490