Results 41 to 50 of about 7,307 (154)

A Remote Sensing-Based Application of Bayesian Networks for Epithermal Gold Potential Mapping in Ahar-Arasbaran Area, NW Iran

Remote Sensing, 2019
Mapping hydrothermal alteration minerals using multispectral remote sensing satellite imagery provides vital information for the exploration of porphyry and epithermal ore mineralizations.
Seyed Mohammad Bolouki, Hamid Reza Ramazi, Abbas Maghsoudi, Amin Beiranvand Pour, Ghahraman Sohrabi   +4 more
doaj   +1 more source

Multi-Scale Geophysics and Chemistry-Based Investigation of Alteration Evolution Mechanisms in Buried Hills of the Northern South China Sea

Journal of Marine Science and Engineering
Alteration is a common metamorphic process in igneous formations and recorded geological information in different times and spaces. Owing to its unique location, the igneous rocks of the buried hills in the northern South China Sea exhibit complex ...
Xinru Wang, Baozhi Pan, Yuhang Guo, Julin Zhang, Xun Yu, Pengji Zhang   +5 more
doaj   +1 more source

Spectral Unmixing for Mapping a Hydrothermal Field in a Volcanic Environment Applied on ASTER, Landsat-8/OLI, and Sentinel-2 MSI Satellite Multispectral Data: The Nisyros (Greece) Case Study

Remote Sensing, 2020
The aim of this study was to propose a methodology that provides a detailed description of the argillic zone of a hydrothermal field, based on satellite multispectral data.
Athanasia-Maria Tompolidi, Olga Sykioti, Konstantinos Koutroumbas, Issaak Parcharidis   +3 more
doaj   +1 more source

Integration of Selective Dimensionality Reduction Techniques for Mineral Exploration Using ASTER Satellite Data

Remote Sensing, 2020
There are a significant number of image processing methods that have been developed during the past decades for detecting anomalous areas, such as hydrothermal alteration zones, using satellite images.
Hodjat Shirmard, Ehsan Farahbakhsh, Amin Beiranvand Pour, Aidy M Muslim, R. Dietmar Müller, Rohitash Chandra   +5 more
doaj   +1 more source

Tertiary hydrothermal activity and its effect on reservoir properties in the Xihu Depression, East China Sea

Petroleum Science, 2019
Three large-scale episodes of volcanic activity occurred during the Tertiary in the Xihu Depression, located in the East China Sea. Intermediate-felsic magmas intruded along faults and the associated hydrothermal fluids resulted in the hydrothermal ...
Yan Liu, Si-Ding Jin, Qian Cao, Wen Zhou
doaj   +1 more source

Fertilizing Properties of Potassium Feldspar Altered Hydrothermally [PDF]

Communications in Soil Science and Plant Analysis, 2019
The material obtained through hydrothermal alteration of K-feldspar rock in alkaline conditions is a potential source of soluble potassium (K), but agronomic testing is needed to verify its capacity to supply K to crops. A (NH4)2SO4-based bioassay was used to test the capacity of the material to supply K to tomato plants (Lycopersicon esculentum Mill.)
Davide Ciceri, Thomas C. Close, Allen V. Barker, Antoine Allanore   +3 more
openaire   +2 more sources

Whole-rock geochemistry of hydrothermal alterations and its relationship with gold mineralization in the Shourab prospect, Isfahan [PDF]

علوم زمین خوارزمی
The Shourab prospect, located in the west of Central Iran, exhibits significant hydrothermal alteration and trace element anomalies linked to potential Iron Oxide Copper-Gold systems (IOCG) mineralization.
Alireza Rezaei Alishahdani, Alireza Jafari Rad, Zahra Alaminia, Mehran Arian, Hemayat Jamali   +4 more
doaj  

Aeromagnetic and Landsat-8 data interpretation for structural and hydrothermal alteration mapping along the Central and Southern Eastern Desert boundary, Egypt

Egyptian Journal of Remote Sensing and Space Sciences, 2022
Pan-African basement rocks cover the study area along the boundary between Central and Southern Eastern Desert with small exposed sedimentary sequences. Several vein-type gold mineralization with hydrothermal alteration zones have long been known in the ...
Safwat S. Gabr, Hassan Diab, Tharwat A. Abdel Fattah, Mohamed F. Sadek, Khalil I. Khalil, Mohamed A.S. Youssef   +5 more
doaj   +1 more source

Hydrothermal alteration of chabazite.

The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 1978
The alteration of zeolites in the system chabazite-(SiO2) -H2O was experimentally studied using conventional hydrothermal techniques. Chabazite was transformed into the following mineral phases with increased temperature in accordance with the quantity of free silica in the reaction system.(A) Ca-harmotome+gonnasdite→wairakite→anorthite. (B) heulandite→
openaire   +2 more sources

Element Migration of Mineralization-Alteration Zones and Its Geological Implication in the Beiya Porphyry–Skarn Deposit, Northwestern Yunnan, China

Applied Sciences
Porphyry and the associated skarn-type deposit is one of the most important types of ore deposits worldwide, which usually exhibit significant zoning of mineralization-alteration, but the research on element migration in these mineralization-alteration ...
Fei Liu, Runsheng Han, Yuxinyue Guo, Mingzhi Wang, Wei Tan   +4 more
doaj   +1 more source