Tracing Water–Rock–Gas Reactions in Shallow Productive Mud Chambers of Active Mud Volcanoes in the Caspian Sea Region (Azerbaijan)

Autor: Aygun Bayramova, Orhan R. Abbasov, Adil A. Aliyev, Elnur E. Baloglanov, Franziska M. Stamm, Martin Dietzel, Andre Baldermann

Publikováno v: Minerals, Vol 13, Iss 5, p 696 (2023)

We present geochemical and mineralogical datasets for five new mud volcanoes in continental Azerbaijan (Hamamdagh and Bendovan) and the adjacent Caspian Sea (Khara-Zire, Garasu and Sangi-Mughan). The fluid ejects have a Na–Cl-type composition and a

Externí odkaz: https://doaj.org/article/50003bcc21cf4ab09543082bca7f3990

Unravelling the formation paths of amorphous hydroxyaluminosilicates and hydrous ferric silicates: Evidence from silicon isotopes

Autor: Franziska M. Stamm, Andre Baldermann, Daniel A. Frick, Dorothee Hippler, Martin Dietzel

Silicate mineral weathering and the resulting formation of clay minerals are key processes at the Earth’s surface. Reverse weathering reactions regulate the evolution of ocean pH and chemistry, atmospheric carbon dioxide budget, soil formation and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d7fa8cc1836ab1d4ed7f4a8c69fa34f
https://doi.org/10.5194/egusphere-egu23-14655

Extreme silicon isotope fractionation due to Si organic complexation: Implications for silica biomineralization

Autor: Merlin Méheut, Jérôme Chmeleff, Eric H. Oelkers, Franziska M. Stamm, Jacques Schott, Thomas Zambardi

Publikováno v: Earth and Planetary Science Letters
Earth and Planetary Science Letters, Elsevier, 2020, 541, pp.116287. ⟨10.1016/j.epsl.2020.116287⟩
Earth and Planetary Science Letters, 2020, 541, pp.116287. ⟨10.1016/j.epsl.2020.116287⟩

A combination of theoretical predictions and isotopic equilibration experiments using the three-isotope method have been performed to assess Si isotope fractionation among minerals, and aqueous species in the presence of dissolved catechol. Aqueous S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::940f6cf2e71707305b6ec4a30049cf3b
https://doi.org/10.1016/j.epsl.2020.116287