Results 11 to 20 of about 1,054 (150)

Isotopic and sedimentological clues to productivity change in Late Riphean Sea: A case study from two intracratonic basins of India

Journal of Earth System Science, 2002
Enriched13C/12C ratios with δ13C ∼3%0 (w.r.t PDB) of two Late Riphean (∼ 700-610 Ma) intracratonic carbonate successions viz., Bhander Limestone of Vindhyan Basin and Raipur Limestone of Chattisgarh Basin suggest higher organic productivity during this period. This view is supported by sedimentological evidence of higher biohermal growth and consequent
P. P. Chakraborty, A. Sarkar, S. K. Bhattacharya, P. Sanyal   +3 more
openaire   +4 more sources

Paleomagnetism of Upper Vendian sediments from the Winter Coast, White Sea region, Russia: Implications for the paleogeography of Baltica during Neoproterozoic times [PDF]

, 2002
Paleomagnetic results from an Upper Vendian sedimentary sequence exposed along the White Sea shoreline, NW Russia are described. These classical exposures have been the subject of intense paleontological investigations due to their well-preserved ...
Alexander Iosifidi, Alexei Khramov, Bingen, Dalziel, Fedonkin, Fisher, Grazhdankin, Hargraves, Hoffman, Jennifer Tait, Kirschvink, Knoll, Martin, McCabe, McFadden, McKerrow, Meert, Meert, Piper, Piper, Pisarevsky, Poorter, Poorter, Powell, Smethurst, Sokolov, Storetvedt, Torsvik, Torsvik, Torsvik, Valerian Bachtadse, Van der Voo, Viktor Popov, Williams, Zijderveld   +34 more
core   +1 more source

ON PALEOTECTONIC BELONGING OF THE SUVANYAK METAMORPHIC COMPLEX (SOUTHERN URALS) FROM THE U-Th-Pb DATING OF DETRITAL ZIRCON GRAINS

Геодинамика и тектонофизика, 2023
U-Th-Pb isotope dating of grains of detrital zircon from quartzites of the Suvanyak metamorphic complex, which forms the Suvanyak tectonic unit that forms the western part of the Uraltau uplift, located in the east of the West Ural megazone in the ...
B. G. Golionko, N. B. Kuznetsov, A. V. Strashko, T. V. Romanyuk, A. S. Novikova, A. S. Dubensky, V. S. Sheshukov, K. G. Erofeeva   +7 more
doaj   +1 more source

Composition and formation conditions of the Upper Riphean terrigenous rocks (Dzhezhimparma Uplift, Southern Timan)

Известия высших учебных заведений: Геология и разведка, 2017
The results of the study of the composition of the Upper Riphean terrigenous rocks of Dzhezhimparma Uplift at Southern Timan have been presented. On the basis of the lithological, geochemical and mineralogical data, the sedimentary material has been ...
N. Yu. Nikulova
doaj   +1 more source

First data on the geochemistry of rare earth elements and platinoids in the rocks of the gold mining deposit Ulyuk-Bar (the Southern Urals)

Литосфера, 2020
Research subject. The object of the study is the Ulyuk-Bar gold deposit ore-bearing rocks, located in the Bashkir meganticlinorium (the Southern Urals). Methods.
S. G. Kovalev, S. V. Michurin, A. V. Maslov, A. A. Sharipova   +3 more
doaj   +1 more source

TERRIGENOUS-CARBONATE CROSS-SECTION IN THE MIDDLE COURSE OF THE VITIM RIVER: CORRELATION, AGE, AND GEODYNAMICS

Геодинамика и тектонофизика, 2022
The descripton has been provided for the cross-section (12 km) of a thick sediment unit on the left bank of the Vitim River, opposite the Nizhny Orlov and Dannaya rivers.
A. M. Stanevich
doaj   +1 more source

Neoproterozoic Microfossils from the Margin of the East European Platform and the Search for a Biostratigraphic Model of Lower Ediacaran Rocks [PDF]

, 2010
A ca. 600 m thick siliciclastic succession in northern Russia contains abundant and diverse microfossils that document early to middle Ediacaran deposition along the northeastern margin of the East European Platform.
Knoll, Andrew Herbert, Sergeev, Vladimir N., Vorob’eva, Nataliya G.   +2 more
core   +1 more source

THE ZIRCON CHRONOLOGY OF THE INTRUSIVE MAGMATISM OF THE KANIN PENINSULA

Известия высших учебных заведений: Геология и разведка, 2018
The Kanin Peninsula is an elevated block of the Timan Ridge where Precambrian sedimentary-metamorphic sequences and magmatic  rocks, intruding them, form the Kanin Kamen Ridge.
V. L. ANDREICHEV, A. A. SOBOLEVA, S. A. SERGEEV, S. L. PRESNYAKOV   +3 more
doaj   +1 more source

⁸⁷Sr/⁸⁶Sr chemostratigraphy of Neoproterozoic Dalradian limestones of Scotland and Ireland: constraints on depositional ages and time scales [PDF]

, 2004
New calcite ⁸⁷Sr/⁸⁶Sr data for 47 limestones from the metamorphosed and deformed Neoproterozoic-Cambrian Dalradian Supergroup of Scotland and Ireland are used to identify secular trends in seawater <sup>
Ellam, R.M., Fallick, A.E., Graham, C.M., Thomas, C.W.   +3 more
core   +1 more source

Plumes - a new word in Geology of the Urals

Литосфера, 2018
Subject. The ideas of plume tectonics became active and developing only several years later than the theory of plate tectonics. But in the Urals, the question of plume tectonics, contrary to plate tectonics, was not raised, with rare exceptions, until ...
Victor N Puchkov
doaj   +1 more source