Results 31 to 40 of about 16,935 (229)

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

BISMUTH MINERALS OF SULFIDE-MAGNETITE ORES FROM THE AKTASH DEPOSIT (WESTERN KARAMAZAR, TAJIKISTAN) [PDF]

Минералогия, 2019
Bismuth mineralization is studied in sulfide-magnetite ores of the Aktash deposit in Western Karamazar (Northern Tajikistan), which is hosted in the Middle–Upper Paleozoic sedimentary and intrusive rocks.
U.A. Yatimov, N.R. Ayupova, I.A. Blinov, V.A. Kotlyarov   +3 more
doaj   +1 more source

NEW DATA ON MINERALOGY OF THE SUGUR COPPER DEPOSIT, SOUTH URALS [PDF]

Минералогия, 2022
The previous and new data on minerals and mineral assemblages of the Sugur copper deposit in the Sugur Mountains of South Urals are summarized. The ores of the deposit host abundant calcite, andradite, diopside, magnetite, chromite and serpentine ...
V.A. Popov, M.A. Rassomakhin, V.I. Popova   +2 more
doaj   +1 more source

Meadow steppe associations of South Urals

Vegetation of Russia, 2013
The syntaxonomical analysis of meadow steppe vegetation of the order Festucetalia valesiacae Br.-Bl. et Tx. ex Br.- Bl. 1950 (class Festuco-Brometea Br.-Bl. et Tx. Ex Soó 1947) and their petrophytic variants in the South Urals (within Bashkortostan Republic) is carried out.
S. M. Yamalov, A. V. Bayanov, A. A. Muldashev, E. A. Averinova   +3 more
openaire   +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

Mammal fauna during the Late Pleistocene and Holocene in the far northeast of Europe [PDF]

, 2013
The paper summarises materials on the mammal remains in northeastern Europe, dated by radiocarbon. Altogether, 23 local faunas of small mammals and 47 local faunas of large mammals were analysed.
Andersen, Arslanov, Arslanov, Ashikhmina, Bachura, Bobretsov, Bohncke, Campos, Campos, Duryagina, Fadeeva, Golovachov, Golubeva, Grichuk, Gromov, Guslitser, Guslitser, Isachenko, Isachenko, James, Kaakinen, Kochev, Kosintsev, Kosintsev, Kosintsev, Kosintsev, Kremenetsky, Kruskal, Kryazheva, Kulik, Kuzmina, Kuzmina, Markova, Mook, Mook, Nikiforova, Obedkov, Ognev, Ovchinnikova, Pacher, Petrov, Petrov, Petrov, Plokhinsky, Polezhaev, Ponomarev, Ponomarev, Ponomarev, Puzachenko, Rasmussen, Reimer, Simakova, Simakova, Simakova, Simakova, Smirnov, Smirnov, Smirnov, Smirnov, Smirnov, Smirnov, Smirnov, Stuart, Surova, Svendsen, Svensson, Turyeva, Turyeva, Velichko, Velichko, Vinther, Voronin, Yashina   +72 more
core   +4 more sources

MINERAL FORMS OF TUNGSTEN AT THE POROKHOVSKOE AND YUGO-KONEVSKOE DEPOSITS (SOUTH URALS) [PDF]

Минералогия
The ore hand specimens and technological ore samples from the Porokhovskoe and Yugo-Konevskoe W greisen deposits in the South Urals are studied. The major W minerals of primary ores at both deposits include hübnerite and scheelite.
D.A. Rogov, E.V. Belogub, K.A. Novoselov, M.A. Rassomakhin, R.R. Irmakov, A.E. Chugaev   +5 more
doaj   +1 more source

Ancient Mines of the South Urals

Vestnik of Saint Petersburg University. History, 2021
The article presents the intermediate results of a historical research, whose purpose is to determine the distribution of ancient mining operations (Chud mines) in the South Urals. Travel journals of the participants of academic expeditions of 1768–1774 — P. S. Pallas, I. I. Lepekhin, N. P. Rychkov and I. P.
openaire   +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

MINERALOGY AND ORE FORMATION CONDITIONS OF THE NAILY GOLD DEPOSIT (SOUTH URALS) [PDF]

Минералогия
The paper examines mineralogy of noble metals and ore formation conditions at the Naily gold deposit (South Urals), which is hosted in pyrite-bearing talc-carbonate, chlorite-quartz-carbonate and quartz-carbonate metasomatites after serpentinites and ...
A.D. Smirnitskaya, E.A. Rozhkova, E.V. Belogub, K.A. Novoselov, M.V. Zabotina, M.A. Rassomakhin   +5 more
doaj   +1 more source