Results 1 to 10 of about 52,852 (285)
Eu isotope fractionation and hydrothermal alteration [PDF]
Scientific ReportsEuropium (Eu) has two naturally stable isotopes (151Eu and 153Eu). The Eu anomalies produced by feldspar crystallization during magma differentiation have provided valuable geochemical information for understanding the evolutionary history of magma in ...
Seung-Gu Lee +7 more
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Hydrothermal weakening and slope instability at Vulcano (Italy) analyzed using drones and in-situ strength measurements [PDF]
Communications Earth & EnvironmentInstability at volcanic edifices poses significant hazards, yet the processes driving rock weakening, particularly on steep, eroding flanks, remain poorly understood due to limited accessibility.
Benjamin F. De Jarnatt +4 more
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Spectral characterisation of hydrothermal alteration associated with sediment-hosted Cu–Ag mineralisation in the central European Kupferschiefer [PDF]
Solid Earth, 2023 The analysis of hydrothermal alteration in exploration drill cores allows for fluid–rock interaction processes to be traced, for fluid flow paths to be identified, and thus for vectors in mineral systems to be determined. Hyperspectral imaging techniques
L. Géring +5 more
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Remote Sensing, 2022 Hydrothermal alteration minerals are an effective prospecting indicator. Advanced spaceborne thermal emission and reflection radiometer (ASTER) satellite data are some of the most commonly adopted multispectral data for the mapping of hydrothermal ...
Qi Chen +7 more
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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 ...
Vaková Helena +2 more
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Geophysical Research Letters, 2023 Recent developments in induced polarization allow for the characterization of alteration halos within hydrothermal systems. We explore the possibility of using electrical conductivity and normalized chargeability tomograms in concert to image ...
L. Piolat, Y. Geraud, A. Revil
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Geochemistry of Dorojen volcanic rocks (SW Ardestan) with the special use of mineral chemistry of Propylitic alteration zones [PDF]
پترولوژی, 2021 Dorojin area in the Southwest of Ardestan city is part of the Urmia-Dokhtar magmatic zone. In the area of study, the intrusion of the Early Miocene granodiorite into the Middle-late Eocene sedimentary-volcanic complex caused the formation of hydrothermal
mahboobeh jamshidibadr +4 more
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Integration of support vector machines for hydrothermal alteration mapping using ASTER data – case study: the northwestern part of the Kerman Cenozoic Magmatic Arc, Iran [PDF]
International Journal of Mining and Geo-Engineering, 2020 This work applies support vector machine (SVM) algorithms in two versions of singular and general SVM classifiers to map hydrothermal alteration zones in the northwestern part of the Kerman Cenozoic Magmatic Arc (KCMA).
Saeed Mojeddifar, Mohammad Mavadati
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Indonesian Journal of Earth Sciences, 2023 This study presents the interpretation of airborne gamma ray spectrometric data to delineate hydrothermally altered zones related to gold mineralization in the Ife–Ilesa Schist belt. K/eTh, Kd and F–Maps highlighting Potassic alterations related to gold
Ayokunle Adewale Akinlalu
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Geochemistry, Geophysics, Geosystems, 2020 Prolonged volcanic activity can induce surface weathering and hydrothermal alteration that is a primary control on edifice instability, posing a complex hazard with its challenges to accurately forecast and mitigate.
Gabor Kereszturi +3 more
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