Results 31 to 40 of about 14,392 (168)
GEOCHEMICAL CHARACTERISTICS OF SNOW COVER IN TOBOLSK
Известия Томского политехнического университета: Инжиниринг георесурсов, 2021 The relevance of this study is associated with the increasing technogenic pollution of highly industrialized urban areas. The aim of the research is to determine chemical element contents in solid precipitation and identify sources of pollutants. Materials: background ecosystems and technogenic urboecosytems in different functional zones of the city of
Dmitriy V. Moskovchenko +2 more
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Petrochemical Characteristics of Cenozoic Basalts in Datong, Shanxi
Taiyuan Ligong Daxue xuebao, 2021 Basalt in the Cenozoic period in Datong, Shanxi can be divided into two types: alkaline basalt in the northwest and tholeiite basalt in the southeast. Petrological and geochemical analyses were carried out on the basalts in Datong area. As known from the
Xiaoqin LI +4 more
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Geochemical characteristics of abiogenic alkane gases [PDF]
Petroleum Science, 2009 Recently abiogenic alkanes have been found in various locations in the world and other celestial bodies. The chemical composition of abiogenic alkane gases varies widely. The content of methane is low and nearly no C2+ is found in the abiogenic alkane gases from fluid inclusions in volcanic rocks or hot springs in China.
Yunyan Ni, Jinxing Dai
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Dizhi lixue xuebao[ Objective ] Carbonatites, as magmatic-origin rocks, are crucial source rocks for uranium, rare earth, and other minerals. They are widely distributed in the Xiaoqinling region of Shaanxi, giving rise to numerous large to super-large carbonatite ...
KANG Qingqing +7 more
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Characteristics of ∼40 Ma Mafic Rocks in North Tibet and Their Tectonic Implications
Geochemistry, Geophysics, GeosystemsSeveral magmatic belts are present in the Tibetan Plateau. Among these, the Qiangtang magmatic belt in North Tibet remains elusive. In particular, the petrogenesis, magma source, and tectonic implications of the ultramafic to mafic rocks in the North ...
Shifeng Wang +3 more
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Yankuang ceshi, 2022 BACKGROUND Selenium (Se) is one of the essential trace elements for humans, and an important way for humans to obtain and supplement selenium is by eating natural selenium-enriched agricultural products. The geochemical characteristics of selenium in the
ZHAO Chen +6 more
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Geochemical Characteristics and Genesis of the Dahongshan Copper Deposit in Yunnan Province
Chemical Engineering Transactions, 2018 Yunnan Dahongshan Copper Mine is one of the largest copper mines in Yunnan Province with an important economic value. Based on the spatial-temporal evolutionary structure and metallogenic characteristics of the Dahongshan Copper Mine, this paper studied ...
Chuntao Ouyang
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Frontiers in Earth Science, 2023 The southeastern Eurasian plate, where the South China Sea (SCS) is located, lies in a complex tectonic setting between the Pacific and Tethys tectonic belts.
Yang Liu +3 more
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Shiyou shiyan dizhiTo clarify the geochemical and hydrocarbon evolution characteristics of marine-continental transitional facies shale, the shale in the Lower Permian Shanxi Formation of the Daning-Jixian area in the eastern margin of the Ordos Basin was taken as the ...
Yangyang ZHANG +15 more
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Geochemical characterization and protolith restoration of Permo-Triassic graphite-bearing schists at Band-e-Cherk district, Kuh-e-Dom metamorphic zone [PDF]
پترولوژیIntroduction Schist and gneiss metamorphic rocks, especially in orogenic belts, mainly host microcrystalline, amorphous, and flaky graphite deposits in the Earth’s crust.
Majid Ghasemi Siani +4 more
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