Results 31 to 40 of about 3,951 (214)

Ediacaran Microfossils from the Ura Formation, Baikal-Patom Uplift, Siberia: Taxonomy and Biostratigraphic Significance [PDF]

open access: yes, 2014
Abundant and diverse microfossils from shales of the uppermost Ura Formation, central Siberia, document early to middle Ediacaran life along the southeastern margin of the Siberian Platform.
Knoll, Andrew Herbert   +2 more
core   +1 more source

Rare Earths in Geological Formations of Central Region of the Dniester River Basin, Republic of Moldova

open access: yesAdvances in Geology, Volume 2015, Issue 1, 2015., 2015
In the different varieties of crystalline basement of Archean and Proterozoic age and in Vendian (Ediacaran) basal layers of platform coverture in the Central Basin of the Dniester River were found relatively high concentrations of Lanthanum, Cerium, Yttrium, Ytterbium, and Scandium.
Aurelia Popuiac, Giovanni Martinelli
wiley   +1 more source

Sedimentology and stratigraphic correlation of Vendian deposits in the southwestern Siberian Craton: Major contribution of an exocratonic clastic source to sedimentary systems

open access: yesЛитосфера, 2018
The study focuses on the sedimentation and stratigraphy of a large Vendian (Ediacaran) sedimentary basin in the southwestern Siberian craton, with implications for the origin of its units and subunits.
Julius K. Sovetov
doaj   +1 more source

Material composition of the kursov’s assise of the vendian period of the Mirnin outshot of the Nepsk-Botuobinsk anteclise according to the results of the core material study

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2020
In this work, the object studied is the terrigenous and carbonate rocks of the Kursov’s assise of the Nepsk horizon of the Botuobinsk facies zone of the Mirnin outshot of the north-eastern part of the Nepsk-Botuobinsk anteclise.
A. V. Plyusnin
doaj   +1 more source

Redox bottom-water conditions in Neoproterozoic basins on eastern and north-eastern periphery of East-European Platform

open access: yesЛитосфера, 2015
The redox bottom-water conditions in the sedimentary basins, which existed during the Late Riphean-Vendian on the east and north-east (in modern coordinates) margins of the Baltic, are investigated.
A. V. Maslov, V. N. Podkovyrov
doaj   +2 more sources

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

open access: yes, 2004
New calcite <sup>87</sup>Sr/<sup>86</sup>Sr 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.   +3 more
core   +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

Pan‐African Paleostresses and Reactivation of the Eburnean Basement Complex in Southeast Ghana (West Africa)

open access: yesJournal of Geological Research, Volume 2012, Issue 1, 2012., 2012
This faulting tectonics analysis concerns the southernmost segment of the Dahomeyide Orogen and the West‐African craton eastern margin in southeast Ghana. The analysis of strike‐slip faults in the frontal units of the Dahomeyide Belt indicates that four distinct compressive events (NE‐SW, ENE‐WSW to E‐W, ESE‐WNW to SE‐NW and SE‐NW to SSE‐NNW ...
Mahaman Sani Tairou   +4 more
wiley   +1 more source

Diversity of the Vendian fossils of Podillia (Western Ukraine)

open access: yesGeo&Bio, 2020
Diversity ofVendian fossil associations is a common feature. The diversity depends on many factors: firstly, physical conditions in the basin, in which animals lived (i.e.
Volodymyr Grytsenko
doaj   +1 more source

Provenance reconstructions. Article 1. Mineralogical and petrographic approaches and methods

open access: yesЛитосфера, 2020
Research subject. This is the first in the series of four articles, which aims to review existing provenance reconstruction tools.Methods and materials.
A. V. Maslov   +3 more
doaj   +1 more source

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