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Ulaanbaatar, Mongolia

Streletskaya I.D.,Moscow State University | Gusev E.A.,Saint Petersburg State University | Vasiliev A.A.,Russian Academy of Sciences | Oblogov G.E.,Russian Academy of Sciences | And 4 more authors.
Earth's Cryosphere | Year: 2013

The paper summarizes the new analytical studies of the Quaternary deposits of West Taimyr and presents the results of spore-pollen, fauna, grain-size and mineralogical, geochemical, isotopic and other analyses. Latest dating for the supporting geocryological transects enable us to refine the stratigraphy and palaeogeographical reconstruction of depositional environments and the freezing sediments late Pleistocene-Holocene in West Taymyr. The long marine sedimentation in the late Kargino time (MIS 3) gives way to continental conditions. Marine sediments were frozen syngenetically and epigenetically with the formation of cryostructure and ground ice. Polygonal vein ice formed in the late Pleistocene (MIS 2) and is characterized by values of the stable isotopes of oxygen (δ18O) -26 ‰...-23 ‰ and hydrogen (δD) -198 ‰...-172 ‰, and predominance of HCO -3 - And Ca2+ ions in the ice. Holocene (MIS 1) polygonal vein ice is characterized by values of the oxygen (δ18O) -20 ‰...-17 ‰ and hydrogen (δD) -160 ‰...-126 ‰ and the prevalence of Cl-and Na+ ions in the ice.

Batjargal B.,Central Geological Laboratory | Davaasuren B.,Central Geological Laboratory | Erdenetsetseg D.,Central Geological Laboratory
Geostandards and Geoanalytical Research | Year: 2010

This paper briefly outlines the production and certification of reference materials at the Central Geological Laboratory (CGL) of Mongolia. The marketing of CRMs produced in Mongolia, as well as problems encountered in internationally recognised certification attempts and some proposed solutions, are discussed. The basic elements of the CGL's strategy for the development of the CRM sector are to produce high quality CRMs according to the requirements of internationally recognised norms, to consider the market needs, to certify the RMs at the international level and to widely advertise them to the geochemical community. The CGL has already established the basis for the further development of this sector by, for instance, accreditation under ISO/IEC 17025, by modernising its preparation technology, by cooperation with international organisations in the field of CRMs and by permanent participation in the International Association of Geoanalysts' GeoPT™ proficiency testing programme.© 2010 The Authors. Geostandards and Geoanalytical Research © 2010 International Association of Geoanalysts.

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