Results 41 to 50 of about 92,190 (313)

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P., Anthony E. Fallick, Anton B. Kuznetsov, Bowring S.A., Brand U., Brasier M.D., Brasier M.D., Brasier M.D., Burns S.J., Calver C.R., Corsetti F.A., Fairchild I.J., Fairchild I.J., Gao G., Gorokhov I.M., Gorokhov I.M., Gorokhov I.M., Grotzinger J.P., Grotzinger J.P., Hoffman P.F., Igor M. Gorokhov, Kaufman A.J., Kennedy M.J., Kirschvink J.L., Knoll A.H., Knoll A.H., Knoll A.H., Kupecz J.A., Kuznetsov A.B., Kuznetsov A.B., Lambert I.B., Magaritz M., McArthur J.M., McArthur J.M., McCulloch M.T., Melezhik V.A., Morton J.P., Ovchinnikova G.V., Pelechaty S.M., Podkovyrov V.N., Pokrovsky B.G., Pokrovsky B.G., Pokrovsky B.G., Saylor B.Z., Semikhatov M.A., Singh U., Smith L.H., Tronnes R.G., Tucker M.E., Tucker M.E., Veizer J., Veizer J., Victor A. Melezhik, Wada S.-I., Walter M.R., Wang Da-Rui   +55 more
core   +1 more source

Convergent flow in a two-layer system and mountain building [PDF]

, 2010
With the purpose of modelling the process of mountain building, we investigate the evolution of the ridge produced by the convergent motion of a system consisting of two layers of liquids that differ in density and viscosity to simulate the crust and the
Gratton, Julio, Perazzo, Carlos Alberto
core   +4 more sources

Trace Elements of Cu-(Fe)-Sulfide Inclusions in Bronze Age Copper Slags from South Urals and Kazakhstan: Ore Sources and Alloying Additions

, 2019
In the paper, the results of an investigation into trace elements found in slag sulfides from 14 archaeological Bronze Age settlements of the Cis-Urals, Trans-Urals, and North and Central Kazakhstan are presented.
D. A. Artemyev, M. Ankushev
semanticscholar   +1 more source

RETRACTED: Use of ultrasonic screening in aquaculture for the directed formation sturgeon and salmon fish mature stocks [PDF]

BIO Web of Conferences
See the retraction notice BIO Web of Conferences 84, 00001 (2024), https://doi.org/10.1051/bioconf ...
Korentovich Marina, Litvinenko Alexander, Egorov Aial, Zenkovich Polina, Litvinenko Liudmila   +4 more
doaj   +1 more source

Contrasting Fluids in the Svetlinsk Gold-Telluride Hydrothermal System, South Urals

, 2019
The large gold-telluride Svetlinsk deposit (~135 t Au) is considered to be a nontraditional one in the Urals and its origin is debated. A specific feature of the deposit is the abundance of various tellurides, such as tellurides of Fe, Ni, Pb, Sb, Bi, Ag,
O. Vikent’eva, V. Prokofiev, A. Borovikov, S. Kryazhev, E. Groznova, Mikhail Pritchin, I. Vikentyev, N. Bortnikov   +7 more
semanticscholar   +1 more source

Platinum-Group Minerals of Pt-Placer Deposits Associated with the Svetloborsky Ural-Alaskan Type Massif, Middle Urals, Russia

Minerals, 2019
The alteration of platinum group minerals (PGM) of eluval, proximal, and distal placers associated with the Ural-Alaskan type clinopyroxenite-dunite massifs were studied.
S. Stepanov, R. S. Palamarchuk, A. Kozlov, D. Khanin, D. Varlamov, Daria V. Kiseleva   +5 more
semanticscholar   +1 more source

New data on the geological structure and zonality of the Vorontsovka gold field in the Northern Urals

Руды и металлы, 2023
Spatial distribution of gold, copper, and iron ore deposits in the Northern Urals with the largest Turya-Auerbakh ore region is controlled by north-west trending linear zones of a probably fault nature.
Vikentyev I. V., Vikentieva O. V., Blokov I. V., Vykhristenko R. I., Yushko N. A., Krinochkin L. A.   +5 more
doaj   +1 more source

SAMARSKITE-(Y) YFe3+Nb2 O8 : THE HISTORY OF DISCOVERY AND STUDIES OF THE FIRST NIOBATE WITH A DOUBLE WOLFRAMITE STRUCTURE [PDF]

Минералогия, 2020
The article describes a history of studies of samarskite-(Y), YFe3+Nb2 O8 , from its discovery in the Ilmeny Mountains (South Urals) in 1839 to the moment of the solution of its crystal structure and refinement of chemical formula in 2019.
S.N. Britvin, I.V. Pekov, M.G. Krzhizhanovskaya, A.A. Agakhanov, B. Ternes, W. Schüller, N.V. Chukanov   +6 more
doaj   +1 more source

Spatial and temporal structure of the spider community in the clay semi-desert of western Kazakhstan [PDF]

, 2011
The spatial and temporal structure of spider communities was studied in the clay semi-desert of the north-western Caspian Lowland, western Kazakhstan (49°23' N, 46°47' E).
Piterkina, Tatyana V.
core   +2 more sources

Origin of Platinum Group Minerals (PGM) Inclusions in Chromite Deposits of the Urals

Minerals, 2018
This paper reviews a database of about 1500 published and 1000 unpublished microprobe analyses of platinum-group minerals (PGM) from chromite deposits associated with ophiolites and Alaskan-type complexes of the Urals.
F. Zaccarini, G. Garuti, E. Pushkarev, O. Thalhammer   +3 more
semanticscholar   +1 more source