FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014562173> ?p ?o ?g. }

• W2014562173 endingPage "82" @default.
• W2014562173 startingPage "81" @default.
• W2014562173 abstract "Relationships of Precambrian ore formations to various tectonic settings are determined largely from geological successions. Mineralized Archaean greenstone belts are interpreted as the upper structural levels of rocks emplaced at rift zones and “oceanic” spreading centres with minor island-arc volcanic rocks and local sediments derived from gneissic microcontinents. Predominantly silicic arc volcanism resulted from ocean-floor subduction, and microcontinent distribution was perhaps similar to that in present-day Indonesia and Melanesia. Arc—arc and arc—microcontinental collisions resulted in recumbent folding and thrusting of greenstone belts with generation of granodiorite and tonalite. Granodiorites were analogous to collision-related granites of Himalayan type. Sub-greenstone-belt oceanic crust was not preserved.Archaean mineralization included placer gold-pyrite deposits at microcontinental margins, subduction-related volcanogenic deposits (Au, Cu) of Abitibi-type in island arcs and related Au-rich exhalative iron and carbonate deposits, sparsely preserved porphyry mineralization (Cu, Mo) and sulphide Ni-Cu deposits associated with komatiitic rocks formed in the upper levels of the rift or ocean rise-erupted, greenstone-belt vol-canics. Early collision Cr-ore bodies were possibly emplaced during metamorphism resulting from arc collisions. Other possible collision-related mineralization includes Sb ores and pegmatites with Sn, W, Ta and Be.Development of Proterozoic continents is indicated by shallow-marine sediments and widespread basins and was initially accompanied by greenstone-belt formation elsewhere. Proterozoic lineaments/megafractures indicate the presence of a major super-continent with arc—continent collisional tectonics similar to those developed between Asia and bordering Taiwan, New Guinea and Timor in the late Cenozoic. Within the supercontinent, elongated narrow oceans opened and closed perhaps with little relative displacement from pre-drift positions. Ophiolitic and island-arc rocks are poorly preserved. High-grade metamorphic zones with linear features possibly developed through oblique collisions.Proterozoic intracratonic rift zone and aulacogen mineralization included the Kupfer-schiefer-type stratiform ores of Cu, Co in the Copperbelt, Zn, Pb, Cu ores at Gamsberg, Namaqualand, South Africa and U deposits. Basic/ultramafic intrusives, e.g. Bushveld Complex, with Cr, Cu, Ni, Pt and carbonatites (Nb, P, U, Ce) were intruded in mega-fractures or lineaments. Hot-spot activity on Rondania, Brazil, had associated Sn mineralization. Ophiolitic deposits included podiform chromite in dunites while subduction-related ore bodies comprised porphyry Cu, Mo, and Kuroko-type Zn, Cu, Pb ores. Proterozoic ophiolitic and subduction-related deposits are comparable to Phanerozoic examples. Collision-related ores included the Rossing uranium-bearing granites and syn-to post-collision granitic rocks elsewhere with Sn, W, Nb, Ta, Li and Be." @default.
• W2014562173 created "2016-06-24" @default.
• W2014562173 creator A5075637794 @default.
• W2014562173 date "1978-05-01" @default.
• W2014562173 modified "2023-09-25" @default.
• W2014562173 title "Copper: Its geology and economics" @default.
• W2014562173 doi "https://doi.org/10.1016/0012-8252(78)90060-0" @default.
• W2014562173 hasPublicationYear "1978" @default.
• W2014562173 type Work @default.
• W2014562173 sameAs 2014562173 @default.
• W2014562173 citedByCount "0" @default.
• W2014562173 crossrefType "journal-article" @default.
• W2014562173 hasAuthorship W2014562173A5075637794 @default.
• W2014562173 hasConcept C112764850 @default.
• W2014562173 hasConcept C127313418 @default.
• W2014562173 hasConcept C149347711 @default.
• W2014562173 hasConcept C151730666 @default.
• W2014562173 hasConcept C173776410 @default.
• W2014562173 hasConcept C17409809 @default.
• W2014562173 hasConcept C1965285 @default.
• W2014562173 hasConcept C2780733770 @default.
• W2014562173 hasConcept C50682988 @default.
• W2014562173 hasConcept C58097730 @default.
• W2014562173 hasConcept C63379926 @default.
• W2014562173 hasConcept C77928131 @default.
• W2014562173 hasConcept C93033518 @default.
• W2014562173 hasConceptScore W2014562173C112764850 @default.
• W2014562173 hasConceptScore W2014562173C127313418 @default.
• W2014562173 hasConceptScore W2014562173C149347711 @default.
• W2014562173 hasConceptScore W2014562173C151730666 @default.
• W2014562173 hasConceptScore W2014562173C173776410 @default.
• W2014562173 hasConceptScore W2014562173C17409809 @default.
• W2014562173 hasConceptScore W2014562173C1965285 @default.
• W2014562173 hasConceptScore W2014562173C2780733770 @default.
• W2014562173 hasConceptScore W2014562173C50682988 @default.
• W2014562173 hasConceptScore W2014562173C58097730 @default.
• W2014562173 hasConceptScore W2014562173C63379926 @default.
• W2014562173 hasConceptScore W2014562173C77928131 @default.
• W2014562173 hasConceptScore W2014562173C93033518 @default.
• W2014562173 hasIssue "1" @default.
• W2014562173 hasLocation W20145621731 @default.
• W2014562173 hasOpenAccess W2014562173 @default.
• W2014562173 hasPrimaryLocation W20145621731 @default.
• W2014562173 hasRelatedWork W160982389 @default.
• W2014562173 hasRelatedWork W1985663088 @default.
• W2014562173 hasRelatedWork W2023532632 @default.
• W2014562173 hasRelatedWork W2064914224 @default.
• W2014562173 hasRelatedWork W2071432022 @default.
• W2014562173 hasRelatedWork W2093611943 @default.
• W2014562173 hasRelatedWork W2143145854 @default.
• W2014562173 hasRelatedWork W2279790984 @default.
• W2014562173 hasRelatedWork W2969459117 @default.
• W2014562173 hasRelatedWork W4295713430 @default.
• W2014562173 hasVolume "14" @default.
• W2014562173 isParatext "false" @default.
• W2014562173 isRetracted "false" @default.
• W2014562173 magId "2014562173" @default.
• W2014562173 workType "article" @default.