The diverse mesoscopic structures in rapakivi granites of Southeastern Finland : episyenites and related processes [PDF]
, 2020 Peralkaline syenites and granites form a small yet significant group of rocks within the A-type granite association worldwide. Although the Mid-Proterozoic Finnish rapakivi (A-type) granite complexes are voluminous in southern Finland, they only host ...
Suikkanen, Einari
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Hydrothermal Surface-Wave Instability and the Kuramoto-Sivashinsky Equation [PDF]
, 1994 We consider a system formed by an infinite viscous liquid layer with a constant horizontal temperature gradient, and a basic nonlinear bulk velocity profile. In the limit of long-wavelength and large nondimensional surface tension, we show that hydrothermal surface-wave instabilities may give rise to disturbances governed by the Kuramoto-Sivashinsky ...
arxiv +1 more source
Major, Trace, and Rare-Earth Element Geochemistry of Nb-V Rich Andradite-Schorlomite-Morimotoite Garnet from Ambadungar-Saidivasan Alkaline Carbonatite Complex, India: Implication for the Role of Hydrothermal Fluid-Induced Metasomatism [PDF]
, 2021 Amiya K. Samal +2 more
openalex +1 more source
Rear polymineral zone of near-veined metasomatic aureole in mesothermal Zun-Holba gold deposit (Eastern Sayan) [PDF]
, 2015 Unique data of the mineralogical and petrochemical zoning of near- veined metasomatic aureole of mesothermal Zun-Holba gold deposit are presented and discussed.
Abramova, Raisa Nikolaevna +2 more
core +1 more source
Thorium (Th) alteration veins in the Northern Trondheimfjord area [PDF]
, 2017 Th-alteration of red carbonate veins within Ytterøy island in the northern Trondheimfjord area was investigated by focusing on field work, mineral chemistry and geochemistry.
Mutasingwa, Almachius
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Quartz- Porphyry Dolerite in A Selected Part of Southern Benue Trough, Nigeria [PDF]
, 2020 The dolerites in some parts of southern Benue Trough were studied petrographically. The results show that most of the dolerites in the Anambra and Afikpo basins are olivine dolerites except Umuchieze LokpaUkwu that host mostly quartz porphyry dolerites ...
J. N., Onwualu-John,, O. P., Offodile,
core +1 more source
Synthesis of Tungsten Oxide Nanoparticles using a Hydrothermal Method at Ambient Pressure [PDF]
, 2014 Tungstite (WO3.H2O) nanoparticles were synthesized using a simple and inexpensive low temperature and low pressure hydrothermal method by adding hydrochloric acid to diluted sodium tungstate solutions (Na2WO4.2H2O) at temperatures below 5oC. A heat treatment at temperatures at or above 300oC resulted in a phase transformation to monoclinic WO3, while ...
arxiv +1 more source
Aminated TiO2 nanotube as a Photoelectrochemical Water Splitting photoanode [PDF]
, 2016 The present work reports on the enhancement of TiO2 nanotubes photoelectrochemical water splitting rate by decorating the nanostructure with an amine layer in a hydrothermal process using diethylenetriamine (DETA). The aminate coated TiO2 tubes show a stable improvement of the photoresponse in both UV and visible light spectrum and under hydrothermal ...
arxiv +1 more source
Neoproterozoic hydrothermal activity in the West Australian Craton related to Rodinia assembly or breakup? [PDF]
, 2019 The timing of final assembly and initiation of subsequent rifting of Rodinia is disputed. New rutile ages (913 ± 9 Ma, 900 ± 8 Ma and 873 ± 3 Ma) and published zircon, monazite, titanite, biotite, muscovite and xenotime geochronology from the Capricorn ...
Agangi, Andrea +7 more
core +1 more source
Stable Isotope Studies of the Rochechouart Impact Structure: Sources of Secondary Carbonates and Sulphides within Allochthonous and Parautochthonous Impactites [PDF]
, 2015 Hypervelocity impacts are among the most ubiquitous processes to affect solid bodies within our solar system [1, 2]. Although they are notoriously devastating, citing responsibility for mass extinction events and global climate perturbations, impacts can
Boyce, A.J. +5 more
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