Results 61 to 70 of about 1,054 (150)

Temporal sequence of geodynamic development processes in the territory of Ukraine from the Eoarchean to Anthropogen

open access: yesГеофизический журнал, 2017
Survey data of geodynamic studies, completed during the latest 20 years in Ukraine for most of its regions, have been generalized in order to summarize the results of regional studies into geo-historical line from Eoarchean to Anthropogen.
O.B. Gintov
doaj   +1 more source

Mineralogy and metabasites formation conditions from ophiolite association at northern slope of Kuznetsk Alatau

open access: yesЛитосфера, 2017
The ophiolites of the northern slope of the Kuznetsk-Alatau Ridge are the most representative fragments of the sub-oceanic crust in the region. In this article, we present the results of a study of the metabasites from ophiolite paragenesis of the ...
N. A. Dugarova   +3 more
doaj   +1 more source

Tubular Compression Fossils from the Ediacaran Nama Group, Namibia [PDF]

open access: yes, 2010
Abundant tubular macrofossils occur in finely laminated siltstones and shales of the 548-542 Ma Schwarzrand Subgroup. Nama Group, Namibia. The Nama tubes occur in both the Vingerbreek and Feldschuhhorn members commonly in dense populations and always in ...
Abelson, John   +13 more
core   +1 more source

TECTONOPHYSICAL EVIDENCES OF GEODYNAMIC EVOLUTION OF THE PRIKOLYMA TERRAIN (NORTH-EASTERN REGIONS OF RUSSIA)

open access: yesГеодинамика и тектонофизика, 2015
The Prikolyma terrain is a part of the Yana-Kolyma orogenic belt located in the North Eastern Asia. It is generally composed of the Proterozoic deposits, including sandstones, metapellites, quartz-feldspar and carbonate rocks, meta- and hyperbasites. The
Anton N. Glukhov   +3 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]

open access: yes, 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.   +7 more
core  

Development of bryozoaus (bryozoa type) on the border of devonian carboniferous in western part of the altai sayanskaya folded area [PDF]

open access: yes, 2007
The features of pearlside development in Late Devonian and Early Carboniferous time in western part of the Altai-Sayanskaya folded area have been revealed.
Tolokonnikova, Z. A.
core  

Ambient inclusion trails in Palaeozoic crustaceans (Phosphatocopina and Ostracoda) [PDF]

open access: yes, 2016
Hollow microtubular structures with pyrite grains at their termini have been found in phosphatocopines (Hesslandona toreborgensis and Hesslandona cf.
Olempska, Ewa, Wacey, David
core   +2 more sources

A likely role for anoxygenic photosynthetic microbes in the formation of ancient stromatolites [PDF]

open access: yes, 2007
Although cyanobacteria are the dominant primary producers in modern stromatolites and other microbialites, the oldest stromatolites pre-date geochemical evidence for oxygenic photosynthesis and cyanobacteria in the rock record.
Bosak, T., Greene, S. E., Newman, D. K.
core   +1 more source

LITHOGEOCHEMICAL CHARACTERISTICS OF TERRIGENOUS AND VOLCANOGENIC-TERRIGENOUS ROCKS OF THE LATE PALEOZOIC TOCHER FORMATION OF THE BAGDARIN SYNFORM (WESTERN TRANSBAIKALIA)

open access: yesГеодинамика и тектонофизика
The paper presents new data on the composition of Late Paleozoic terrigenous and volcanogenic-terrigenous rocks of the Upper Devonian-Lower Carboniferous Tocher formation of the Bagdarin synform (Western Transbaikalia).
V. S. Tashlykov   +4 more
doaj   +1 more source

Glacial facies associations in a Neoproterozoic back-arc setting, Zavkhan Basin, western Mongolia [PDF]

open access: yes, 2017
Diamictites, many of glacial origin, are globally distributed in the Neoproterozoic. Recently, two relatively thin diamictites in the Maikhan Uul Member at the base of the Neoproterozoic Tsagaan Oloom Formation from the Zavkhan Basin of western Mongolia ...
Bat-Ireedui, Y. A.   +4 more
core  

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