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   Articles with "hydrothermal alteration" as a keyword



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Hydrothermal alteration-related kaolinite/dickite occurrences in ignimbrites: an example from Miocene ignimbrite units in Avanos, Central Turkey

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recommendations! Published in 2020 at "Arabian Journal of Geosciences"

DOI: 10.1007/s12517-020-06021-2

Abstract: Miocene-Quaternary volcanic complexes associated ignimbrites from the Cappadocia Volcanic Province in Central Anatolia have been subjected to hydrothermal alteration which produced several industrial clay mineralizations. This study focuses on the hydrothermally altered Late Miocene dacitic… read more here.

Keywords: miocene; alteration; alteration related; related kaolinite ... See more keywords
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Kaolinite Occurrence of Kachchh, Gujarat: A Product from Rhyolitic Tuff by Hydrothermal Alteration

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recommendations! Published in 2019 at "Journal of the Geological Society of India"

DOI: 10.1007/s12594-019-1269-7

Abstract: Kaolinite associated with Mesozoic sediments of Kachchh and alkaline igneous rocks are not well studied in view of its genesis. The petrography, EPMA and DTA studies support that the studied kaolinite samples formed by mature… read more here.

Keywords: rhyolitic tuff; tuff hydrothermal; kachchh; hydrothermal alteration ... See more keywords
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Insight into hydrothermal and subduction processes from copper and nitrogen isotopes in oceanic metagabbros

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recommendations! Published in 2018 at "Earth and Planetary Science Letters"

DOI: 10.1016/j.epsl.2018.06.030

Abstract: Abstract The transfer of trace elements from external terrestrial reservoirs (i.e. atmosphere, hydrosphere, crust) to the mantle is mainly controlled by their geochemical behaviors during hydrothermal alteration of the oceanic crust and subsequent subduction metamorphism.… read more here.

Keywords: hydrothermal subduction; low strain; eclogite facies; subduction ... See more keywords
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Geochronology of mafic magmatism and hydrothermal alteration during early stages of South Atlantic opening

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recommendations! Published in 2021 at "Geochimica et Cosmochimica Acta"

DOI: 10.1016/j.gca.2021.08.017

Abstract: Abstract 40Ar/39Ar laser incremental-heating geochronology of whole-rock fragments and minerals from primitive subalkaline mafic dykes from the Cabo Frio Tectonic Domain, southeastern Brazil, reveal a complex combination of intrusive ages, apparent ages affected by excess… read more here.

Keywords: geochronology mafic; geochronology; mafic magmatism; hydrothermal alteration ... See more keywords
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REE geochemical characteristics and satellite-based mapping of hydrothermal alteration in Atud gold deposit, Egypt

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recommendations! Published in 2018 at "Journal of African Earth Sciences"

DOI: 10.1016/j.jafrearsci.2018.01.013

Abstract: Abstract New geochemical data of the hydrothermal alteration zones associated with gold-bearing quartz veins at Atud mine are used for better understanding the ore evolution and exploration vectoring. ASTER and Landsat 8 OLI data are… read more here.

Keywords: zone; alteration; quartz; alteration zones ... See more keywords
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Mapping of hydrothermal alteration in the upper mantle-lower crust transition zone of the Tayin Massif, Sultanate of Oman using remote sensing technique

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recommendations! Published in 2019 at "Journal of African Earth Sciences"

DOI: 10.1016/j.jafrearsci.2018.10.001

Abstract: Abstract This study maps hydrothermal alteration of Wadi Tayin Massif of the Sultanate of Oman using the spectral bands of Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the image processing methods namely band… read more here.

Keywords: mantle; massif sultanate; tayin massif; hydrothermal alteration ... See more keywords
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Geochronology, geochemical and Sr–Nd–Hf-Pb isotopic compositions of the granitoids in the Yemaquan orefield, East Kunlun orogenic belt, northern Qinghai-Tibet Plateau: Implications for magmatic fractional crystallization and sub-solidus hydrothermal alteration

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recommendations! Published in 2017 at "Lithos"

DOI: 10.1016/j.lithos.2017.10.012

Abstract: Abstract A general consensus has emerged that high field strength elements (HFSE) can mobile to some extent in a hydrothermal fluid. However, there are hot debates on whether sub-solidus hydrothermal alteration can lower the Nb/Ta… read more here.

Keywords: fractional crystallization; hydrothermal alteration; crystallization; geochronology ... See more keywords
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Identification of new base metal mineralization in Kumaon Himalaya, India, using hyperspectral remote sensing and hydrothermal alteration

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recommendations! Published in 2018 at "Ore Geology Reviews"

DOI: 10.1016/j.oregeorev.2017.11.023

Abstract: Abstract Economic mineral deposits are commonly associated with zones of intense hydrothermal alteration. Space borne hyperspectral remote sensing is one of the recent techniques that enable the identification of hydrothermally altered and weathered minerals. In… read more here.

Keywords: base; kumaon himalaya; base metal; hyperspectral remote ... See more keywords
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Characterization of the Hegenshan podiform chromitites (Inner Mongolia, China): Sub-solidus cooling and hydrothermal alteration

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recommendations! Published in 2020 at "Ore Geology Reviews"

DOI: 10.1016/j.oregeorev.2020.103413

Abstract: Abstract Podiform chromitites in the Hegenshan ophiolitic complex from the Inner Mongolia of China display massive, semi-massive, and disseminated textures. The extent of Fe2+–Mg redistribution between high-Al chromite and olivine during sub-solidus cooling is affected… read more here.

Keywords: chr; high chromite; podiform chromitites; hydrothermal alteration ... See more keywords
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Using hyperspectral imagery for identification of pyrophyllite-muscovite intergrowths and alunite in the shallow epithermal environment of the Yerington porphyry copper district

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recommendations! Published in 2021 at "Ore Geology Reviews"

DOI: 10.1016/j.oregeorev.2021.104012

Abstract: Abstract Hydrothermal mineral deposits are the primary source of many mineral commodities of global importance. Since hydrothermal alteration minerals associated with the formation of these mineral deposits are active in the visible and infrared range,… read more here.

Keywords: pyrophyllite muscovite; yerington porphyry; mineralogy; hydrothermal alteration ... See more keywords
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Effects of hydrothermal alteration on mafic lithologies at the Olympic Dam Cu-U-Au-Ag deposit

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recommendations! Published in 2017 at "Precambrian Research"

DOI: 10.1016/j.precamres.2017.02.013

Abstract: Two groups of mafic to ultramafic lithologies occur at the Olympic Dam copper-uranium-gold-silver deposit, South Australia. The first group consists of olivine-phyric basalt and mafic dykes belonging to the ca. 1590 Ma Gawler Range Volcanics; the… read more here.

Keywords: deposit; olivine phyric; dam deposit; olympic dam ... See more keywords