Results 1 to 10 of about 7,307 (154)

Hydrothermal Alteration of the Ocean Crust and Patterns in Mineralization With Depth as Measured by Micro-Imaging Infrared Spectroscopy. [PDF]

J Geophys Res Solid Earth, 2021
Greenberger RN, Harris M, Ehlmann BL, Crotteau MA, Kelemen PB, Manning CE, Teagle DAH, Oman Drilling Project Science Team.   +7 more
europepmc   +1 more source

Raman Spectroscopy Coupled with Reflectance Spectroscopy as a Tool for the Characterization of Key Hydrothermal Alteration Minerals in Epithermal Au-Ag Systems: Utility and Implications for Mineral Exploration. [PDF]

Appl Spectrosc, 2021
Arbiol C, Layne GD.
europepmc   +1 more source

Hydrothermal alteration of energy fly ashes [PDF]

Acta Montanistica Slovaca, 1998
The contribution gives attention to the application of the hydrothermal alteration technique in the zeolite production from fly-ash. The conventional mineral processing methods such as screening and gravity separation in Humphrey spiral were used with ...
Vašková Helena, Kušnierová Mária, Baèinský Peter   +2 more
doaj  

K-Ar geochronology for hydrothermal K-feldspar within plagioclase in a granitic pluton: constraints on timing and thermal condition for hydrothermal alteration. [PDF]

Heliyon, 2021
Yuguchi T, Yagi K, Sasao E, Nishiyama T.
europepmc   +1 more source

Metamorphism of hydrothermally altered rocks

, 1998
In some metamorphosed volcanic belts, evidence of premetamorphic hydrothermal activity is preserved in the form of distinct metamorphic mineral assemblages. By considering the effect of metamorphism on rocks of various compositions, it is possible to deduce premetamorphic mineral assemblages, some of which could be products of hydrothermal alteration ...
openaire   +1 more source

Application of Machine Learning to Hydrothermal System Analysis: Geochemical Insights from the Bektakari–Bneli Khevi Ore Knot, Southern Georgia

Bulletin of the Mineral Research and Exploration
This study integrates geochemical, statistical, and machine learning methods to investigate hydrothermal systems and mineralization processes within southern Georgia's Bektakari–Bnelikhevi ore knot.
Giorgi Mindiashvili, David Bluashvili, Tornike Lipartia, Nino Jafaridze, Keti Benashvili   +4 more
doaj   +1 more source

Shallow thermal activity of Tokachidake Volcano (Japan) investigated through repeated drone-borne magnetic surveys

Earth, Planets and Space
In recent years, new geothermal anomalies have been detected on the northwestern slope of the 62-II crater near the summit of Tokachidake Volcano, Hokkaido, Japan.
Toshiaki Hokari, Ryo Tanaka, Takeshi Hashimoto, Takao Koyama   +3 more
doaj   +1 more source

Geology of the Riacho do Pontal iron oxide copper-gold (IOCG) prospect, Bahia, Brazil: hydrothermal alteration approached via hierarchical cluster analysis

Brazilian Journal of Geology
The Riacho do Pontal prospect is situated on the border between the Borborema Province and the São Francisco Craton, in Bahia state. It comprises rocks polydeformed during the Neoproterozoic.
Sérgio Roberto Bacelar Huhn, Marcelo Januario Sousa, Carlos Roberto de Souza Filho, Lena Virgínia Soares Monteiro   +3 more
doaj   +1 more source

Magmatic significance and hydrothermal alteration of layered chromitites from the Bracco Gabbro Complex, Ligurian Ophiolites, Italy

Bulletin of the Mineral Research and Exploration
The Bracco chromitites are hosted in the Mesozoic Ligurian Ophiolites (Italy) and provide key insights into the magmatic and post-magmatic (i.e. metamorphic and hydrothermal) evolution ofgabbro-hosted chromitites in an oceanic mantle.
Federica Zaccarini, Raphael J. Baumgartner, Constantinos Mavrogonatos, Giorgio Garuti   +3 more
doaj   +1 more source

Slides Occurring in Hydrothermal Alteration Zones

Landslides, 1996
The geology in the catchment area of the Nitappugawa River consists primarily of the Upper Miocene Ikutahara Formation and Late Miocene rhyolite, andesite, and basalt dikes, as well as the Quaternary System. The Ikutahara Formation is widely distributed in the area and is composed of tuffaceous conglomerate, sandstone and mudstone, lapilli tuff, tuff ...
openaire   +2 more sources