Results 71 to 80 of about 987 (207)

Assessment of the contribution of Precambrian deposits in forming the petroleum potential of the eastern part of the Volga-Urals basin using results of modeling

open access: yesЗаписки Горного института
Consideration is given to results of geochemical analysis of organic matter and oils of the Proterozoic (the RF-V complex) and the Paleozoic (the pay intervals D2, D3, C1-2) of the eastern part of the Volga-Urals petroleum basin.
Dmitrii D. Kozhanov, Mariya Bolshakova
doaj  

Nature of zircon clastics in the Riphean and Vendian sandstones of the Southern Urals [PDF]

open access: yes, 2019
New age dates of detrital zircons of terrigenous rocks augmented the possibilities of interpretation of their provenance. Unfortunately this interpretation is restricted by a formal comparison of age-and-composition characteristics of detrital crystals ...
S.V. Busharina   +3 more
core   +1 more source

DETRITAL ZIRCONS FROM THE PRECAMBRIAN OF THE IGARKA UPLIFT (NORTHWESTERN SIBERIAN PLATFORM)

open access: yesГеодинамика и тектонофизика
Herein we report the results of LA-ICP-MS dating of detrital zircons from eight stratigraphic levels of the Proterozoic section of the Igarka uplift (northwestern Siberian Platform).
B. B. Kochnev   +5 more
doaj   +1 more source

Biostratigraphy of the Vendian-Cambrian Sukharikha River section, northwestern Siberian Platform

open access: yes, 1998
The Sukharikha River section contains more than 800 m of fossiliferous Vendian and Lower Cambrian carbonate rock deposited in ramp, shelf, and slope environments.
Alexander I Tarletskov   +5 more
core   +1 more source

Pre-Ordovician phosphorites and paleooceanography: a brief excursus into geochemical systematics of rare earth elements

open access: yesЛитосфера, 2017
This publication provides an overview of the rare earth elements systematics in Pre-Ordovician phosphorites from various regions of the world. Based on the analysis of significant data bank it shows that currently there are no universal parameters ...
A. V. Maslov
doaj  

The first results of U-Pb (LA-ICP-MS) dating of detrital zircons from sandstones of the Staropetrovo Formation of the Vendian Volga-Uralian sedimentary basin and potential sources of zircon clusters

open access: yesGeoresursy
For the first time, information on the age of rocks – sources of zircon clastics for deposits of the Staropetrovo Formation of the Vendian Volga-Uralian sedimentary basin was obtained.
S. A. Dyakova   +5 more
doaj   +1 more source

GEOCHRONOLOGY OF THE METAMORPHIC ROCKS IN THE KURAI ACCRETIONARY PRISM (SOUTH-EASTERN GORNY ALTAI)

open access: yesГеодинамика и тектонофизика, 2017
The paper provides a review of the published and new geological and geochronological data on the metamorphic rocks in the Kurai accretionary prism, considering the evolution of the Kuznetsk-Altai island-arc paleosubduction channel of the Siberian ...
A. V. Kulikova   +2 more
doaj   +1 more source

C and Sr isotope chemostratigraphy of Vendian–Lower Cambrian carbonate sequences in the central Siberian Platform

open access: yes, 2018
We propose a detailed δ13C curve for the Vendian and Lower Cambrian (Tommotian) strata of the central Siberian Platform. Two positive carbon isotope excursions identified near the base of the Yuryakh Formation (up to 5.5‰) and in the lower Bilir ...
A.B. Kuznetsov   +3 more
core   +1 more source

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