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Browsing ELibrary by Title
Now showing items 12546-12565 of 21936
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(1996)A large number of terrestrial and extraterrestrial reservoirs are sampled by ultradepleted rocks containing mainly olivine and orthopyroxene. However, very few attempts have been made to determine the REE contents and ...
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(2003)The Neogene stratigraphic scale comprising 12 regional stages of the Eastern Paratethys is discussed. The stratotype, its lithology, and characteristic micro- and macrofossils are given for every regional stage with ...
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(2005)The presence of pre-Paleozoic ophiolites in the Polar Ural region has been a matter of debate for a long time. In order to solve this problem rock samples were collected from the Enganepe Ridge and the Kharbei metamorphic ...
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(1998)Using the most reliable palaeomagnetic data from the Siberian Platform we have constructed an apparent polar wander (APW) path extending between 1100 Ma and 250 Ma. From this we derive the palaeo-latitudinal drift history ...
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(1996)In this collection of papers, we attempt to document, through interdisciplinary studies in southwest Mongolia, the interlinked evolution of the biosphere and lithosphere over the Neoproterozoic–Cambrian interval. In so ...
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(1996)This paper provides a framework for the stratigraphy and correlation of key sections through the Neoproterozoic–lower Cambrian of the Govi-Altay area, western Mongolia, studied by members of IGCP Project 303. Dzabkhan ...
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(1999)A description and reconstruction of the new fossil are based on the rounded isometric imprints which are composed of two rows of transverse elements. The elements are arranged in the manner of glide reflection symmetry. ...
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(2001)Two new minerals, levinsonite-(Y) [(Y,Nd,Ce)Al(SO4)2(C2O4) · 12H2O] and zugshunstite-(Ce) [(Ce,Nd,La)Al(SO4)2(C2O4) · 12H2O], occur in an evaporite assemblage at Alum Cave Bluff, Great Smoky Mountains National Park, ...
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(1999)Experiments to study the partitioning of Ni between olivine and garnet at natural abundances were performed at 1200 °C - 3 GPa, 1300 °C - 3, 5 and 7 GPa and 1500 °C - 5 GPa using piston-cylinder and multi-anvil apparatus. ...
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(2003)Mantle fluids sampled by mid-ocean ridge basalts and by diamonds are depleted in the heavy isotope of nitrogen, 15N, by about 3–5 parts per mil relative to atmosphere, suggesting a common nitrogen end-member since at least ...
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(2003)This is the final report on the nomenclature of eudialyte-group minerals by the Eudialyte Nomenclature Subcommittee established by the Commission on New Minerals and Mineral Names of the International Mineralogical ...
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(1995)We have investigated the state of adiabaticity in mantle flows by using a Lagrangian tracer technique to map out the thermal state of parcels in both downwelling and upwelling flows in mantle flush events. The model, based ...
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(1996)In order to study the characteristics of P1, the dominant ''normal planetary'' noble gas component in chondrites, we prepared HF/HCl residues for fourteen chondrites from seven chondrite classes. We chose relatively ...
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(2004)The global climate changings at the end of Pleistocene led to extinction of the typical representatives of Mammoth fauna–mammoth, woolly rhinoceros, wild horse, bison, muskox, cave lion, etc.–on the huge territories of ...
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(1997)The microbarographs installed at distances of 45 and 113 km from Shiveluch Volcano recorded acoustic signals during the powerful explosive eruption of November 12, 1964. The signals were produced by the formation of a ...
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(2000)The structure of Fe(OH0.86,OD0.14)2 was refined by applying the Rietveld technique to neutronpowder diffraction data collected at 300, 150, and 10 K. The nuclear structure, of the CdI2 type (P3–m1) and isostructural ...
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(1992)The Caledonides of Ny Friesland comprise the type Hecla Hoek sequence of Svalbard, a succession of late Proterozoic to Ordovician strata greater than 18 km thick. Three supergroups constitute the sequence: the Stubendorffbreen ...
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(1994)The mineral grossite (CaAl4O7; Ca-dialuminate, also termed CA2) is a rare phase in terrestrial and extraterrestrial rocks. In meteorites, grossite was found in Ca,Al-rich inclusions (CAIs) from Allende (CV3), Vigarano ...
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(1996)The paper summarizes the results of research into the development of exogenous geological processes in the cryolithozone carried out at Moscow State University. The main types of modern geocryological processes are identified, ...
Now showing items 12546-12565 of 21936