Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Valeria Boyko"'
Autor:
Barak Blonder, Valeria Boyko, Alexandra V. Turchyn, Gilad Antler, Uriel Sinichkin, Nadav Knossow, Rotem Klein, Alexey Kamyshny
Publikováno v:
Frontiers in Microbiology, Vol 8 (2017)
The Gulf of Aqaba is an oligotrophic marine system with oxygen-rich water column and organic carbon-poor sediments (≤0.6% at sites that are not influenced by anthropogenic impact). Aeolian dust deposition from the Arabian, Sinai, and Sahara Deserts
Externí odkaz:
https://doaj.org/article/4860e5aed6a64dc2b762c49f64a79de7
Publikováno v:
Limnology and Oceanography.
Autor:
Alexey Kamyshny, Valeria Boyko, Khoren Avetisyan, Alyssa Findlay, Qingjun Guo, Xi Yang, Andre Pellerin
Publikováno v:
Goldschmidt2022 abstracts.
Publikováno v:
Journal of the Geological Society. 179
The high fluxes of iron minerals associated with aeolian dry deposition may result in an anomalously high reactive iron content and the rapid reoxidation of hydrogen sulfide in sediments. This will prevent the formation of pyrite and result in a ‘c
Autor:
André Pellerin, Alexey Kamyshny, Qingjun Guo, Khoren Avetisyan, Alyssa Findlay, Valeria Boyko, Xi Yang
Publikováno v:
Boyko, V, Avetisyan, K, Findlay, A, Guo, Q, Yang, X, Pellerin, A & Kamyshny, A 2021, ' Biogeochemical cycling of sulfur, manganese and iron in ferruginous limnic analog of Archean ocean ', Geochimica et Cosmochimica Acta, vol. 296, pp. 56-74 . https://doi.org/10.1016/j.gca.2020.12.020
The early evolution of life on Earth was intimately coupled with the evolution of ocean chemical composition and redox conditions in Archean ocean. However, the measurements of chemical and isotopic compositions of Archean sedimentary rocks does not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3475d14d31e78cd6a9ed4a08485ff261
https://pure.au.dk/portal/da/publications/biogeochemical-cycling-of-sulfur-manganese-and-iron-in-ferruginous-limnic-analog-of-archean-ocean(2b3a4e99-5fe1-4938-a8e9-a5550267e651).html
https://pure.au.dk/portal/da/publications/biogeochemical-cycling-of-sulfur-manganese-and-iron-in-ferruginous-limnic-analog-of-archean-ocean(2b3a4e99-5fe1-4938-a8e9-a5550267e651).html
Autor:
Xi, Yang, Qingjun, Guo, Valeria, Boyko, Khoren, Avetisyan, Alyssa J, Findlay, Fang, Huang, Zhongliang, Wang, Zhenwu, Chen
Publikováno v:
Science of The Total Environment. 817:152609
The chemical composition and redox conditions of the Precambrian ocean are key factors for reconstructing the temporal evolution of atmospheric oxygen through time. In particular, the isotopic composition of iron are useful proxies for reconstructing
Publikováno v:
Goldschmidt Abstracts.
Autor:
Shimon Feinstein, Valeria Boyko, Lubna Shawar, Alexey Kamyshny, Ward Said-Ahmad, Itay Halevy, Alon Amrani
Publikováno v:
Geochimica et Cosmochimica Acta. 241:219-239
Organic-rich carbonate sediments are deposited in a range of environments today and in the geologic past. A significant part of organic matter (OM) degradation in such sediments often occurs by microbial reduction of seawater sulfate, and the sulfide
Publikováno v:
Aquatic Geochemistry. 24:165-193
Oxygen profiles were measured in the sediments of the Gulf of Aqaba (Red Sea), an oligotrophic marine system affected by episodic seasonal flash floods and intense aeolian dry deposition. Sediment cores were retrieved from shallow (15–45 m), interm
Autor:
Qingjun Guo, Alyssa Findlay, Xi Yang, Alexey Kamyshny, Khoren Avetisyan, André Pellerin, Valeria Boyko
Publikováno v:
Geology
Findlay, A J, Boyko, V, Pellerin, A, Ayetisyan, K, Guo, Q, Yang, X & Kamyshny, A 2019, ' Sulfide oxidation affects the preservation of sulfur isotope signals ', Geology, vol. 47, no. 8, pp. 739-743 . https://doi.org/10.1130/G46153.1
Findlay, A J, Boyko, V, Pellerin, A, Ayetisyan, K, Guo, Q, Yang, X & Kamyshny, A 2019, ' Sulfide oxidation affects the preservation of sulfur isotope signals ', Geology, vol. 47, no. 8, pp. 739-743 . https://doi.org/10.1130/G46153.1
The accumulation of oxygen in Earth’s atmosphere and oceans in the late Archean had profound implications for the planet’s biogeochemical evolution. Oxygen impacts sulfur cycling through the oxidation of sulfide minerals and the production of sul