Results 51 to 60 of about 1,820 (158)

Carbonate sedimentation through the late Precambrian and Phanerozoic [PDF]

, 1999
The global sediment mass-age distribution indicates large variations in the rates of carbonate sedimentation through time. The largest mass of carbonate deposited during the entire history of the earth was produced during the Cambrian, possibly ...
Hay, William W.
core  

Rear polymineral zone of near-veined metasomatic aureole in mesothermal Zun-Holba gold deposit (Eastern Sayan) [PDF]

, 2015
Unique data of the mineralogical and petrochemical zoning of near- veined metasomatic aureole of mesothermal Zun-Holba gold deposit are presented and discussed.
Abramova, Raisa Nikolaevna, Cherkasova, Tamara Yurievna, Kucherenko, Igor Vasilyevich   +2 more
core   +1 more source

Sc, Cr, Co, Ni, Th and rare earth elements systematics in black shales of Murav’inskaya and Velsovskaya formations (Lyapin-Kutim anticlinorium, the Northern Urals): to the provenance reconstructions

Литосфера, 2017
The features of the Sc, Cr, Co, Ni, Th and rare earth elements distribution in the black shales of the Riphean Murav’inskaya and Velsovskaya formations in southern part of the Lyapin-Kutim anticlinorium (Northern Ural) are analyzed.
Andrey V. Maslov, Georg A. Petrov, Yury L. Ronkin   +2 more
doaj   +1 more source

Ore-forming Сonditions of the Blagodat Gold Deposit in the Riphean Metamorphic Rocks of the Yenisey Ridge According to Geochemical and Isotopic Data [PDF]

, 2009
Neodymium and strontium isotopic composition and rare earth elements (REE) distribution pattern have been determined in whole rocks and minerals were separated from host metamorphic rocks and disseminated sulfide ores of the Blagodat gold deposit ...
Gertner, Igor F., Kolmakov, Yuri V., Krasnova, Tatyana S., Leontyev, Sergey I, Poleva, Tatyana V., Sazonov, Anatoly M., Tishin, Platon A., Zvyagina, Elena A.   +7 more
core  

Sr-Nd Systematics and REE distribution in the type magnesite deposits in Lower Riphean of South Urals province

Литосфера, 2016
The geochemistry and REE of magnesite and host carbonate rocks of two Lower Riphean deposits of the South Urals province (Satka and Ismakaevo ore fields) confirm the metasomatic nature of the magnesite.
M. T. Krupenin, A. B. Kuznetsov, G. V. Konstantinova   +2 more
doaj   +2 more sources

Geotectonic model of the Alpine development of Lakavica graben in the eastern part of the Vardar zone in the Republic of Macedonia [PDF]

, 2013
Lakavica graben is located in the eastern subzone of the Vardar zone, which during the Alpine orogenesis was covered with very complex processes of tectogenesis.
Dimov, Gorgi, Petrov, Gose, Stojanova, Violeta   +2 more
core   +1 more source

Seismogeological structure model of the Anabar-Olenek region

Georesursy
The velocity characteristics of the Upper Proterozoic-Phanerozoic sedimentary cover of the AnabarOlenek region were studied, in particular, the bimodal character of the distribution interval P-wave velocities was established.
I. A. Gubin, V. A. Kontorovich
doaj   +1 more source

Рудная минерализация габброидов Аргысукского массива (северо-запад Восточного Саяна) [PDF]

, 2016
Актуальность работы обусловлена необходимостью детального петрологического исследования многочисленных потенциально рудоносных мафит-ультрамафитовых массивов Канской глыбы Восточного Саяна с целью совершенствования региональных схем корреляции, а также ...
Юричев, Алексей Николаевич
core  

Geodynamic control on the petroleum habitat of the Uralian Foreland

Georesursy
A comparative study of the Uralian Foreland in the Timan-Pechora and Volga Urals basins reveals considerable differences in structure and petroleum habitat. These differences were in large measure controlled by their geodynamic settings.
K. O. Sobornov
doaj   +1 more source

Strontium Isotopic Variations of Neoproterozoic Seawater: Implications for Crustal Evolution [PDF]

, 1991
We report high precision Sr isotopic data on carbonates from the Neoproterozoic Shaler Group, Victoria Island, Northwest Territories, Canada. Lithostratigraphic correlations with the relatively well-dated Mackenzie Mountains Supergroup constrain Shaler ...
Asmerom, Yemane, Butterfield, Nicholas J., Jacobsen, Stein B., Knoll, Andrew, Swett, Keene   +4 more
core   +1 more source