FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003641336> ?p ?o ?g. }

• W2003641336 endingPage "833" @default.
• W2003641336 startingPage "767" @default.
• W2003641336 abstract "The mineral assemblages of a variety of basaltic compositions have been studied experimentally in the pressure range from 1 bar to 30 kb at temperatures above 1000°C and below the basalt solidus. At low pressures, less than 10 kb at 1100°C, the mineral assemblages match those of gabbros and pyroxene granulites but at pressures above 21 kb at 1100°C the major phases are pyrope-almandine garnet and clinopyroxene and the mineral assemblages match those of eclogites. At intermediate pressures the mineral assemblages are characterized by co-existence of garnet, clinopyroxene, plagioclase and, commonly, quartz. The transition interval between the gabbroic and eclogitic assemblages is a broad one characterized by gradual increase in garnet and in the pyrope content of the garnet, and decrease in plagioclase and in the anorthite content of the plagioclase. The roles of variable SiO2-saturation, Na2O content, albite: anorthite ratio of plagioclase, oxidation state, and of variations in the Mg/(Mg + Fe2+) (atomic) ratio have been studied to determine the influence of particular chemical parameters on the pressure at which a given phase (e.g. garnet) appears or disappears. Low values of the Mg/(Mg + Fe2+) ratio cause garnet to appear at lower pressures. In undersaturated compositions (olivine-normative), garnet appears at lower pressures than in quartz-normative compositions and in addition there is an intermediate assemblage of aluminous pyroxenes + plagioclase + spinel present, particularly in magnesian basalts, between the low pressure olivine-bearing and higher pressure garnet-bearing assemblages. The pressure required for elimination of plagioclase varies from 15 to 20 kb at 1100°C in the spectrum of basaltic compositions studied. The pressure required for the appearance of garnet and disappearance of plagioclase in a given composition is strongly dependent on temperature. P-T gradients for these boundary reactions in a quartz tholeiite composition have been established in the 1000–1250°C temperature range. When extrapolated to lower temperatures, these gradients suggest that eclogite mineralogy is stable in dry basaltic rocks along normal geothermal gradients throughout the entire crust. The observed mineral assemblages at various pressures and the effects of chemical parameters on mineralogy in a given P-T field are closely matched with natural pyroxene granulite and eclogite occurrences and with experimental work in simple systems. The experimental work provides some quantitative data on dry solid-solid reactions which are strongly pressure and temperature dependent and which, in natural rocks, provide criteria for subdivision of granulite facies metamorphic rocks into high pressure, intermediate pressure and low pressure types. By comparison of the experimental data with estimates of the PH2O, T conditions of other metamorphic facies, based in part on dehydration reactions, it is argued that eclogite mineralogy may be stable in dry basaltic rocks within the almandine amphibolite facies, the glaucophane schist facies and part of the greenschist facies of regional metamorphism." @default.
• W2003641336 created "2016-06-24" @default.
• W2003641336 creator A5045652400 @default.
• W2003641336 creator A5052214469 @default.
• W2003641336 date "1967-01-01" @default.
• W2003641336 modified "2023-10-18" @default.
• W2003641336 title "An experimental investigation of the gabbro to eclogite transformation and its petrological applications" @default.
• W2003641336 cites W1966793143 @default.
• W2003641336 cites W1973898800 @default.
• W2003641336 cites W1974156958 @default.
• W2003641336 cites W1975845570 @default.
• W2003641336 cites W1977984382 @default.
• W2003641336 cites W1991511248 @default.
• W2003641336 cites W1992680765 @default.
• W2003641336 cites W1995118042 @default.
• W2003641336 cites W1997861704 @default.
• W2003641336 cites W2014735733 @default.
• W2003641336 cites W2019040669 @default.
• W2003641336 cites W2020091358 @default.
• W2003641336 cites W2029295285 @default.
• W2003641336 cites W2032935976 @default.
• W2003641336 cites W2035056140 @default.
• W2003641336 cites W2041941281 @default.
• W2003641336 cites W2058326659 @default.
• W2003641336 cites W2060405543 @default.
• W2003641336 cites W2063222200 @default.
• W2003641336 cites W2067153691 @default.
• W2003641336 cites W2067904654 @default.
• W2003641336 cites W2068398280 @default.
• W2003641336 cites W2070868192 @default.
• W2003641336 cites W2077194548 @default.
• W2003641336 cites W2081628533 @default.
• W2003641336 cites W2081874948 @default.
• W2003641336 cites W2086414351 @default.
• W2003641336 cites W2093317589 @default.
• W2003641336 cites W2095207111 @default.
• W2003641336 cites W2108505672 @default.
• W2003641336 cites W2123291756 @default.
• W2003641336 cites W2132301990 @default.
• W2003641336 cites W2136433737 @default.
• W2003641336 cites W2150948203 @default.
• W2003641336 cites W2156236005 @default.
• W2003641336 cites W2159997654 @default.
• W2003641336 cites W2270692314 @default.
• W2003641336 cites W2318090806 @default.
• W2003641336 cites W2320661868 @default.
• W2003641336 cites W2322518872 @default.
• W2003641336 cites W2323497324 @default.
• W2003641336 cites W2326290082 @default.
• W2003641336 cites W2330888995 @default.
• W2003641336 cites W2333414322 @default.
• W2003641336 cites W2334181955 @default.
• W2003641336 cites W2476426470 @default.
• W2003641336 cites W2478496673 @default.
• W2003641336 cites W4293774250 @default.
• W2003641336 doi "https://doi.org/10.1016/s0016-7037(67)80031-0" @default.
• W2003641336 hasPublicationYear "1967" @default.
• W2003641336 type Work @default.
• W2003641336 sameAs 2003641336 @default.
• W2003641336 citedByCount "785" @default.
• W2003641336 countsByYear W20036413362012 @default.
• W2003641336 countsByYear W20036413362013 @default.
• W2003641336 countsByYear W20036413362014 @default.
• W2003641336 countsByYear W20036413362015 @default.
• W2003641336 countsByYear W20036413362016 @default.
• W2003641336 countsByYear W20036413362017 @default.
• W2003641336 countsByYear W20036413362018 @default.
• W2003641336 countsByYear W20036413362019 @default.
• W2003641336 countsByYear W20036413362020 @default.
• W2003641336 countsByYear W20036413362021 @default.
• W2003641336 countsByYear W20036413362022 @default.
• W2003641336 countsByYear W20036413362023 @default.
• W2003641336 crossrefType "journal-article" @default.
• W2003641336 hasAuthorship W2003641336A5045652400 @default.
• W2003641336 hasAuthorship W2003641336A5052214469 @default.
• W2003641336 hasConcept C127313418 @default.
• W2003641336 hasConcept C151730666 @default.
• W2003641336 hasConcept C161509811 @default.
• W2003641336 hasConcept C173347748 @default.
• W2003641336 hasConcept C17409809 @default.
• W2003641336 hasConcept C199289684 @default.
• W2003641336 hasConcept C26687426 @default.
• W2003641336 hasConcept C2775859737 @default.
• W2003641336 hasConcept C2776283581 @default.
• W2003641336 hasConcept C2778993962 @default.
• W2003641336 hasConcept C2778998827 @default.
• W2003641336 hasConcept C2779181077 @default.
• W2003641336 hasConcept C2779870107 @default.
• W2003641336 hasConcept C2780364934 @default.
• W2003641336 hasConcept C2781374366 @default.
• W2003641336 hasConcept C58097730 @default.
• W2003641336 hasConcept C76349523 @default.
• W2003641336 hasConcept C77928131 @default.
• W2003641336 hasConcept C79605941 @default.
• W2003641336 hasConceptScore W2003641336C127313418 @default.
• W2003641336 hasConceptScore W2003641336C151730666 @default.
• W2003641336 hasConceptScore W2003641336C161509811 @default.
• W2003641336 hasConceptScore W2003641336C173347748 @default.

• next