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Browsing ELibrary by Title
Now showing items 7791-7810 of 21768
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(2004)The Paleocene-Eocene marine deposits recovered by two reference boreholes (011BP and 9) in the Omsk depression, the southwestern Siberian plate, have been comprehensively studied in various paleontological aspects. Geology ...
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NEW DATA ON THE MECHANISM OF NATURAL SEPARATION OF EVEN-NUMBERED ISOTOPES OF URANIUM (234U AND 238U) (1990)We have developed a special instrument for three-dimensional mass spectrometric analysis (TDMSA) with differential ion counting, which allows rather detailed detection of time-dependent changes that occur in the isotopic ...
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(2004)Lithology and distribution of nannofossils and mollusks in two continuous sections (anticline of the Mt. Zelenskii, Tamanskii Peninsula, and the Pshekha River section, Western Ciscaucasia) of the upper Chokrakian-lower ...
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(2004)Scars of shell muscles have been discovered on internal molds of helcionelloid mollusks of the family Stenothecidae for the first time. The localization of the scars is similar to that in the family Coreospiridae. Since ...
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(2002)A new ammonoid species of the family Neocomitidae is discovered in the Riasanites rjasanensis zone of the Ryazaman Stage (Berriasian) in the course of the study of the Jurassic-Cretaceous boundary beds in the Russian ...
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(1997)The Upper Riphean biostratigraphic characteristic of the Timan was supplemented with the new data provided by the drilling of a number of wells in the Tsil'menskii Kamen' region. Its western sections include abundant ...
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(2004)New morphological types of sclerites of the tommotiid species Lapworthella fasciculata Conway Morris et Bengtson are described from the Lower Cambrian of South Australia. These sclerites are composed of five fused elements. ...
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(2004)The complex petro-, geochemical and mineralogical investigation of gabbroides and associating with them plagiogranites permits to conclude that formation of the gabbroic pluton, which fragments are mapped in 1-ya Olchovaya ...
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(2004)The Mezen sedimentary basin (frequently called the Mezen syneclise) situated on the northeastern Russian Platform has an area of aprroximately 300 000 km2. The volume of its sedimentary filling exceeds 106 km3. Riphean and ...
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(1987)Since the thermoisochron method requires only a small quantity of material (one or a few zircon crystals), the authors able for the first time to date sedimentary rocks and anorthosite that contain only very small quantities ...
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(2004)The North Caspian region between the Kuma River mouth and the Emba River hosts several submeridional ridges and mounds (Baer hummocks), which are named after K. Baer who described them. Despite the long history of study ...
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(1989)The Gorringe Ridge, in the northwestern segment of the Azores-Gibraltar zone has long been a feature of great interest, primarily because bedrock exposures of the ophiolite association, i.e., serpentinite, gabbro, metadolerite, ...
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(1990)The Kachkanar-Guseva gabbro-clinopyroxenite pluton is a typical representative of the complicated multiphase complexes of the dunite-gabbro-plagiogranite association in folded regions, and contains a large ore deposit of ...
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(2001)The structure of the Lower Cretaceous rhyncholites H. (Hadrochelius) optivus and H. (H.)fissum is studied using SEM. Phyncholites are shown to consist of many alternating homogeneous layers of granular and cryptocrystalline ...
Now showing items 7791-7810 of 21768