Results 21 to 30 of about 1,312 (211)
Remote Sensing, 2019 Listvenites normally form during hydrothermal/metasomatic alteration of mafic and ultramafic rocks and represent a key indicator for the occurrence of ore mineralizations in orogenic systems.
Amin Beiranvand Pour +10 more
doaj +1 more source
Earth and Planetary Science Letters, 2020 Fluid–rock interaction within accretionary prisms drastically changes the frictional strength and slip stability of the fault zone. In order to understand the effect of ultramafic components on the degree of interplate coupling, we present data on frictional properties of a reaction zone between serpentinite and argillite in a tectonic mélange of the ...
Ken-ichi Hirauchi +3 more
openaire +3 more sources
Известия высших учебных заведений: Геология и разведка, 2022 Background. The Stolbovoe deposit is located in the northern part of the Eastern Sayan, in the Nizhneudinsky district of the Irkutsk region, within the N-47-IX map sheet. The surveying of the territory began in the sixties of the last century.
E. N. Karmanov +3 more
doaj +1 more source
Elemental Gains and Losses during Hydrothermal Alteration in Awak Mas Gold Deposit, Sulawesi Island, Indonesia: Constraints from Balanced Mineral Reactions [PDF]
, 2022 Hydrothermal gold mineralization is commonly associated with metasomatic processes resulting from interaction of hostrock with infiltrating hot aqueous fluids.
Idrus, Arifudin +5 more
core +1 more source
Monitoring fluid chemistry in iron oxide–copper–gold-related metasomatic processes, eastern Mt Isa Block, Australia [PDF]
, 2006 Most researchers in the Proterozoic eastern Mt Isa Block, NW Queensland, Australia, favour magmatic fluid and salt sources for sodic-(calcic) alteration and iron oxide-copper-gold mineralization.
Marshall, L.J., Oliver, N.H.S.
core +1 more source
PRECIOUS-METAL MINERALIZATION AT THE WESTERN EXOCONTACT OF THE HAUTAVAARA MASSIF, SOUTH KARELIA
Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2017 Intense silicification zones and metasomatic alterations (propylitic-type) with Au-Bi-Tebearing base-metal and sulfoarsenide mineralization were revealed at the exocontact of the Hautavaara granosyenite-monzogranite massif, South Karelia.
Людмила Владимировна Кулешевич +7 more
doaj +1 more source
Hydrothermal alteration in the lower part of an early Proterozoic greenstone complex at Palovaara, Enontekiö, northwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 1988 The lower part of the early Proterozoic greenstone complex at Palovaara, northwestern Finnish Lapland, comprises a quartzite formation overlain by intermediate and felsic tuffs and tuffites with some lava flows, mostly intermediate in chemical ...
P. Eilu, H. Idman
doaj +1 more source
Геодинамика и тектонофизика, 2022 The mantle paleogeotherm under the Obnazhennaya kimberlite pipe (Kuoika field, Siberian craton) was reconstructed using the chemical composition of clinopyroxene xenocrystals and the FITPLOT program.
E. A. Muravjeva +5 more
doaj +1 more source
Metasomatic oxidation of subduction zone mantle: Implication for arc metallogeny [PDF]
, 2018 This thesis investigates redox processes taking place during metasomatic alteration of the Earth’s mantle by slab fluids, and the subsequent partial melting of metasomatised mantle, by applying different geochemical and petrological techniques to ...
ANDREA RIELLI (4970545)
core +1 more source
, 2018 The Palaeoproterozoic Transvaal and Olifantshoek Supergroups of South Africa contain some of the earliest hematite-rich sedimentary rocks (red-beds) and paleosols on record.
George Luvizotto +14 more
core +1 more source