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Now showing items 21-40 of 83
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(2006)Xenoliths hosted by Quaternary basanites and alkali basalts from Marsabit (northern Kenya) represent fragments of Proterozoic lithospheric mantle thinned and chemically modified during rifting in the Mesozoic (Anza Graben) ...
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(1999)Data on changes in the taxonomic composition of planktonic and benthic foraminifers across the Cretaceous-Paleogene boundary are presented. Extinction events in the highly specialized planktonic group were most remarkable. ...
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(2002)Fossil wood of the Engelhardioideae was found in Russia for the first time. A new species Engelhardioxylon mameticum sp. nov., from the Oligocene of the Esgichninvayam River basin (Mametchinskii Peninsula, Kamchatka) ...
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(2006)Eight points of recurring controversy regarding the primary foundations of models of Gulf of Mexico and Caribbean tectonic evolution are identified and examined. The eight points are controversial mainly because of the ...
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(2006)Results of the study of a new Ge-bearing area of the Pavlovka brown coal deposit are presented. Ge is accumulated in bed III2 lying at the bottom of the Late Paleogene-Early Neogene coal-bearing sequence adjacent to the ...
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(2001)The first data are reported on the isotopic and trace-element composition of potassic igneous rocks from central Kamchatka. The composition of minerals and distribution of incompatible elements in volcanic (shoshonitic and ...
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(2001)New data on the trace element distribution in rocks of volcanic-plutonic associations from the vicinity of the Karamken gold-silver deposit are reported. The deposit is localized in the outer zone of the Cretaceous ...
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(2004)The epiplatform (Upper Cretaceous-Paleogene) and neotectonic (Neogene-Quaternary) evolutionary stages and morphostructures are distinguished in Mongolia. The neotectonic structures are characteristic of the orogenic zone ...
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(1989)Analysis of the evolution of Phanerozoic stratigraphic complexes of the western margin of the East European craton (EEC) and the Central European Platform (CEP) shows that their formation depended on the corresponding ...
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(2006)Granulite xenoliths from the Cretaceous-Paleogene Tuoyun basalts in the southwestern Tianshan area (NW China) are mainly pyroxene granulite and olivine granulite, with minor garnet granulite and quartz granulite. They can ...
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(2006)New structural data, available seismicity data together with mechanical constraints on the Eurasian continental lithosphere and reconstruction of paleostress trajectories are combined in order to re-assess and discuss the ...
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(1990)The isotopic composition of carbon in oils and condensates of the Chukotka Peninsula was studied in samples taken from wells on the verkhne-Tekelay, Verkhne-Echinskaya, and Izmennaya tracts, located in the southern part ...
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(1995)Welded tuffs in the Bogopol and Sijanov groups were sampled at 27 sites from 12 caldera formations in the Sikhote Alin mountain range around Kavalerovo (44.3°N, 135.0°E) for chronological and paleomagnetic studies. KAr age ...
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(2006)Zeolites are represented by clinoptilolite (from 15-20 to 30-32%) in Paleogene rocks of the southern Russian Platform. Zeolite-bearing complexes formed under coastal-marine conditions of the platform type. Clinoptilolite, ...
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(2003)Micropaleontology and lithology of rocks dredged near the Terpeniya Rise of the Kuril Basin slope are studied. Bio-, litho-, and seismostratigraphic records are used to distinguish the Paleocene-Lower Oligocene (Seismocomplex ...
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(2006)Major- and trace-element data on the constituent minerals of garnet peridotite xenoliths hosted in early Paleozoic (457–500?Ma) kimberlites and Neogene (16–18?Ma) volcanic rocks within the North China Craton are compared ...
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(2000)This study of minerals from the Late Cretaceous potassic volcanic rocks of the Kirganik Suite from the Sredinnyi Range of Central Kamchatka provided a basis for affiliating these rocks with two series: (1) a plagioclase ...
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(1997)A detailed study of the Paleogene terrigenous-tuffogenic beds on Kronotskii Peninsula, Govena Peninsula, and in Karaginskii Island and the Komandor Islands has revealed several levels of nannoplankton occurrences, which ...
Now showing items 21-40 of 83