Results 51 to 60 of about 321 (175)

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

Geochemical background of Berezovsky depression oil and gas potential (eastern Siberia)

open access: yesGeoresursy
Berezovsky depression, located on the northeast of the Pre-Patom foredeep, is a promising target for hydrocarbon prospecting, as evidenced by oil and gas shows established while drilling, the presence of structures and natural reservoirs.
N. P. Fadeeva   +3 more
doaj   +1 more source

NEW DATA ON THE AGE AND COMPOSITION OF OPHIOLITES FROM THE KABAK-TAIGA MASSIF (GORNY ALTAI)

open access: yesГеодинамика и тектонофизика
The combination of newly obtained geological, petrological and geochronological data on the rocks from the Kabak-Taiga ophiolite massif of the Gorny Altai and already published materials on similar characteristics of the ophiolites from Tuva allows us to
V. D. Zindobryi   +2 more
doaj   +1 more source

Chemical peculiarities of the Silurian–Ordovician and Cambrian–Vendian aquifer systems in Estonia: an overview of hydrochemical studies [PDF]

open access: yesEstonian Journal of Earth Sciences, 2009
The chemical composition of groundwater was studied and plausible reasons for its peculiarities were evaluated on the basis of long-term groundwater monitoring data.
Karro, Enn   +3 more
doaj  

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  

BOUNDARY BETWEEN THE TIMANIAN AND URALIAN TECTONIC CYCLES: RESULTS OF DATING OF DETRITAL ZIRCONS FROM BASAL HORIZONS OF THE LOWER PALEOZOIC SYNRIFT COMPLEX OF THE POLAR URALS, AND IGNEOUS ROCK AGE DATA REPORT

open access: yesГеодинамика и тектонофизика
The Upper Cambrian-Lower Ordovician terrigenous strata, unconformably overlying the Upper Riphean-Vendian rocks of the Timanide orogen in the north of the Urals, and contemporaneous bimodal volcanics and intrusive rocks are considered complexes marking ...
A. A. Soboleva   +2 more
doaj   +1 more source

New data on the manifestation of Baikalian (Timanian) tectono-magmatic activation on West Spitsbergen Island

open access: yesЗаписки Горного института
The Spitsbergen archipelago is at the junction of the northern segment of the Norwegian-Greenland Basin and the western part of the Arctic Ocean, which makes it a key area for deciphering the formation history and geological structure of the region ...
Aleksandr N. Sirotkin   +3 more
doaj  

Features of pyrolytic studies of magnesite-bearing rocks of the Vendian-Cambrian strata of the Lena-Tunguska petroleum province [PDF]

open access: yesНефтегазовая геология: Теория и практика
The results of pyrolytic studies of carbonate rocks of Vendian-Cambrian strata, penetrated by parametric and exploratory wells within the eastern part of the Lena-Tunguska petroleum province, are summarized.
Nevestenko M.A.   +3 more
doaj  

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