Zobrazeno 1 - 10
of 693
pro vyhledávání: '"alkaline rocks"'
Autor:
Essam Sidique, Mervat A. Elhaddad, Mabrouk Sami, Ioan V. Sanislav, Fahad Alshehri, Mohamed S. Ahmed, Hassan Abbas
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract This study primarily investigates the natural radioactivity level in alkaline rocks collected from the Wadi El-Dib ring complex (WDRC) in North Eastern Desert of Egypt, and assesses potential health risks associated with their use as decorat
Externí odkaz:
https://doaj.org/article/50b9a5d855084253812905d60f51b504
Autor:
Yan Yang, Franz Neubauer, Zheng Liu, Guo-Chang Wang, Shu-Cheng Tan, Xiao-Hu He, Chen-Yue Liang
Publikováno v:
Geosystems and Geoenvironment, Vol 3, Iss 3, Pp 100289- (2024)
Accessible silicate reservoirs on Earth (i.e., the depleted mantle and continental crust) are depleted in Nb relative to chondrites, as expressed by their subchondritic Nb/Ta ratios. Mixtures of continental crust and depleted mantle cannot produce ch
Externí odkaz:
https://doaj.org/article/aeabf8522cda4560826e6f6a93722047
Autor:
Amanda Andrade de Souza, Rogério Guitarrari Azzone, Luanna Chmyz, Lina Maria Cetina Tarazona, Fábio Ramos Dias de Andrade, José Vinicius Martins, Excelso Ruberti, Celso de Barros Gomes
Publikováno v:
Minerals, Vol 14, Iss 7, p 724 (2024)
The formation of Fe-Ti oxides-rich layers is commonly associated with open-system magma chamber dynamics. These processes are widely discussed due to the economic importance of Fe-Ti-(V) deposits, although an alkaline-system approach to the matter is
Externí odkaz:
https://doaj.org/article/9f150241df43465b8040ac605250d25a
Publikováno v:
Brazilian Journal of Geology, Vol 53, Iss 2 (2023)
Abstract This study revises the early-magmatic, late-magmatic, and hydrothermal mineral assemblages occurring in rocks of agpaitic affinity, mainly represented by nepheline syenites and phonolites, from the Poços de Caldas alkaline massif. Mostly co
Externí odkaz:
https://doaj.org/article/3dc0ca1c09ae4d36b27d644e039c372c
Publikováno v:
Kuangchan zonghe liyong, Vol 44, Iss 1, Pp 10-15 (2023)
Kvanefield REE deposit is a world-class REE deposit, which is located at the northern margin of the Ilímaussaq complex in the central part of Gardar igneous province, southwestern Greenland. The intrusion controlling ore is the mesoproterozoic Ilima
Externí odkaz:
https://doaj.org/article/92c387ff77be4a5ba161f89d3f48000a
Akademický článek
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Publikováno v:
Brazilian Journal of Geology, Vol 53, Iss 2 (2023)
Abstract Alkaline dikes from the Santos-Rio de Janeiro coast, SE Brazil, mainly from São Sebastião and Búzios islands, yielded a Late Cretaceous paleomagnetic pole (SR) located at 319.7°E 81.2°S (N = 44, A95 = 3.0°, k = 44). This pole includes
Externí odkaz:
https://doaj.org/article/1237cb3b7d8f429a83b5f9c3cbe0a32c
Autor:
Adriana Ion, Ana Cosac
Publikováno v:
Heliyon, Vol 9, Iss 3, Pp e13976- (2023)
This paper gives an overview of the REEs distribution in topsoil from Ditrău Alkaline Massif area under influence of basic natural factors (parent material and soil acidity). Seventy-six soil samples were collected in accord with the most representa
Externí odkaz:
https://doaj.org/article/041d87f566aa4e88bb11d4c0f74a059e
Publikováno v:
Frontiers in Environmental Science, Vol 10 (2023)
The alkaline rocks are known for enriching rare lithophilic elements, including lithium, uranium, and tin, which negatively impact aquatic life. This study offers an intensive investigation of the influence of alkaline rocks on Nile Tilapia (Oreochro
Externí odkaz:
https://doaj.org/article/185cea9b5def42e9a174af9e3a538d41
Akademický článek
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