Browsing ELibrary by Author "Raaben M.E."

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  • BIOTIC EVENTS AND POSITIVE δCCARB ANOMALY AT 2.3-2.06 GA 
    Semikhatov M.A.; Raaben M.E.; Sergeev V.N.; Veis A.F.; Artemova O.V. (1999)
    A comprehensive analysis of taxonomic composition of pre-Riphean silicified and organic-walled microfossils described in publications is performed and dynamics of stromatolite abundance during the Archean and Paleoproterozoic ...
  • C-ISOTOPE CHEMOSTRATIGRAPHIC CORRELATION OF THE UPPER RIPHEAN IN THE URALS AND ARCTIC REGION 
    Raaben M.E. (2001)
    Two secular variation curves of C-isotope composition in the Late Riphean carbonates are discussed. The curve approximating data on the Upper Riphean deposits of Spitsbergen, Greenland, northwestern Canada, and southwestern ...
  • DIMENSIONAL PARAMETERS OF COLUMNAR STROMATOLITES AS A RESULT OF STROMATOLITE ECOSYSTEM EVOLUTION 
    Raaben M.E. (2006)
    Columnar stromatolites representing more than a half of species described in Precambrian stromatolite assemblages reveal a regular trend of size variations during the Proterozoic and Early Paleozoic. Their dimensional ...
  • NEW DATA ON THE RIPHEAN STRATIGRAPHY OF TIMAN 
    Raaben M.E.; Oparenkova L.I. (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 ...
  • PRE-EDIACARIAN FAUNA FROM TIMAN (ANNELIDOMORPHS OF THE LATE RIPHEAN) 
    Gnilovskaya M.B.; Veis A.F.; Raaben M.E.; Bekker Yu.R.; Olovyanishnikov V.G. (2000)
    The Timan biota from Russia and Huainan biota from China proved the pre-Ediacarian Metazoa did exist in the past. In Russia, the genus Parmia Gnilovskaya of the pre-Ediacarian annelidomorphs, whose construction has distinct ...
  • THE EARLY PALEOZOIC MINISTROMATOLITES 
    Raaben M.E. (2003)
    In spite of intensive sedimentological and biostratigraphic investigations of ministromatolites, their assemblages systematically studied are those of Precambrian age. Ministromatolites occurred in abundance in the Early ...