Results 11 to 20 of about 507,597 (315)

Lithostratigraphical features and the Poro-Perm properties of lagoonal facies rocks of Bukhara step (Bukharа-Khivа oil and gas region) [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
For the effective conduct of petroleum geological exploration, it is necessary to reliably determine the position in space and time of the reservoirs, which are often composed of rocks of various petrographical compositions and facies.
Evseeva G.B.   +2 more
doaj   +1 more source

History of the First Ore Prospecting Expedition of 1491 in the Arctic Zone of the Russian State

open access: yesАрктика и Север, 2022
In the Middle Ages, the Russian state, formed around Moscow, was in dire need of metals. However, only comparatively poor quality swamp iron was mined on the territory of the Russian principalities.
Konstantin V. Lobanov   +3 more
doaj   +1 more source

The First Scientific Expeditions to the Bering Strait and to the Russian Colonies in America

open access: yesАрктика и Север, 2022
Based on the geographical atlases of the 16th century, the German scientist G. Leibniz proposed to Peter I a project aimed at discovering a strait between Asia and America, studying the Earth’s magnetic field, cartographic and other research in Russia ...
Aleksandr Ya. Dokuchaev   +4 more
doaj   +1 more source

X-ray absorption spectroscopy study of the chemistry of «invisible» Au in arsenian pyrites [PDF]

open access: yesE3S Web of Conferences, 2019
Arsenian pyrite is an abundant mineral occurring in many geological settings at the Earth’s surface, including hydrothermal ore deposits which are the main source of Au.
Filimonova Olga   +8 more
doaj   +1 more source

Controversial Issues of Hydrocarbon Field Formation and the Role of Geomagnetic Fields

open access: yesInternational Journal of Geophysics, 2022
This review paper presents controversial issues on the formation of hydrocarbon deposits. We look into the geological contradictions of the abiogenic and biogenic theories of petroleum origin, indicating the connection between hydrocarbon deposits and ...
Andrey A. Ponomarev   +5 more
doaj   +1 more source

Current state and development prospects of geological exploration activity for oil and gas in the Fergana Region of the Republic of Uzbekistan [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2021
The Fergana region is one of the five petroleum bearing regions of the Republic of Uzbekistan with proven industrial productivity in the stratigraphic range from Paleozoic to Neogene, including.
Abdullaev G.S.   +2 more
doaj   +1 more source

Revisiting Controls on Shale Oil Accumulation in Saline Lacustrine Basins: The Permian Lucaogou Formation Mixed Rocks, Junggar Basin

open access: yesGeofluids, 2021
Fine-grained mixed rocks in saline lacustrine basins are important targets for shale oil exploration. However, the controls on shale oil accumulation are complex due to the multi-source mixed deposition.
Chenjia Zhang   +5 more
doaj   +1 more source

Last Decade Analysis over the Impact of Loans & Deposits on the Romanian Economy: from Hook to Anchor [PDF]

open access: yesRevista de Management Comparat International, 2020
Traditionally, banking consists in attracting deposits or other repayable funds from the population and in granting loans. This paper aims to analyze the attracted deposits and the loans granted in the Romanian banking system, as well as analyze the ...
Adriana-Daniela CIUREL, Cristian ANGHEL
doaj   +1 more source

Discrimination of Mineralization Types of Skarn Deposits by Magnetite Chemistry

open access: yes, 2022
There are different mineralization types for skarn deposits with various origins and ore-forming conditions. Magnetite is one of the main ore minerals in skarn deposits, but whether chemical compositions of magnetite can be used to discriminate different
Liang Qi   +4 more
core   +1 more source

Geochemical features and formation conditions of the cupriferous sandstones of the Orenburg Pre-Urals

open access: yesЛитосфера, 2018
Object. The article describes a new geological and geochemical data for Permian host rocks and copper sandstones (CS) in Orenburg’s Pre-Urals. Methods .
Alexander V. Volkov   +4 more
doaj   +1 more source

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