Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland
Mineral assemblages and chemical compositions of minerals found in impure dolomitic marbles embedded in gneisses and migmatites of the E. Greenland Caledonian fold belt (Scoresby Sund) suggest that the marbles were metamorphosed near 630 °C at 5 kb pressure. The analysis of complex textural and mine...
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Oxford University Press
1982
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fthighwire:oai:open-archive.highwire.org:petrology:23/3/325 2023-05-15T16:03:43+02:00 Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland BUCHER-NURMINEN, K. 1982-08-01 00:00:00.0 text/html http://petrology.oxfordjournals.org/cgi/content/short/23/3/325 https://doi.org/10.1093/petrology/23.3.325 en eng Oxford University Press http://petrology.oxfordjournals.org/cgi/content/short/23/3/325 http://dx.doi.org/10.1093/petrology/23.3.325 Copyright (C) 1982, Oxford University Press Articles TEXT 1982 fthighwire https://doi.org/10.1093/petrology/23.3.325 2007-06-24T10:20:30Z Mineral assemblages and chemical compositions of minerals found in impure dolomitic marbles embedded in gneisses and migmatites of the E. Greenland Caledonian fold belt (Scoresby Sund) suggest that the marbles were metamorphosed near 630 °C at 5 kb pressure. The analysis of complex textural and mineralogical relations among minerals such as dolomite, calcite, forsterite, pargasite, chlorite, spinel, diopside and phlogopite led to the conclusion that the major mineralogical features of the rocks were probably caused by sodium metasomatism at constant temperature and pressure. The effect of the inferred sodium metasomatism may be summarized by three schematic reactions all involving modal changes of excess dolomite, calcite, forsterite, chlorite and spinel: (a) nucleation and growth of pargasite, (b) resorption of phlogopite, and (c) growth of pargasite from phlogopite. Text East Greenland Greenland Scoresby Sund HighWire Press (Stanford University) Greenland Sund ENVELOPE(13.644,13.644,66.207,66.207) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Journal of Petrology 23 3 325 343 |
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English |
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Articles |
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Articles BUCHER-NURMINEN, K. Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
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Articles |
description |
Mineral assemblages and chemical compositions of minerals found in impure dolomitic marbles embedded in gneisses and migmatites of the E. Greenland Caledonian fold belt (Scoresby Sund) suggest that the marbles were metamorphosed near 630 °C at 5 kb pressure. The analysis of complex textural and mineralogical relations among minerals such as dolomite, calcite, forsterite, pargasite, chlorite, spinel, diopside and phlogopite led to the conclusion that the major mineralogical features of the rocks were probably caused by sodium metasomatism at constant temperature and pressure. The effect of the inferred sodium metasomatism may be summarized by three schematic reactions all involving modal changes of excess dolomite, calcite, forsterite, chlorite and spinel: (a) nucleation and growth of pargasite, (b) resorption of phlogopite, and (c) growth of pargasite from phlogopite. |
format |
Text |
author |
BUCHER-NURMINEN, K. |
author_facet |
BUCHER-NURMINEN, K. |
author_sort |
BUCHER-NURMINEN, K. |
title |
Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
title_short |
Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
title_full |
Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
title_fullStr |
Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
title_full_unstemmed |
Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
title_sort |
mechanism of mineral reactions inferred from textures of impure dolomitic marbles from east greenland |
publisher |
Oxford University Press |
publishDate |
1982 |
url |
http://petrology.oxfordjournals.org/cgi/content/short/23/3/325 https://doi.org/10.1093/petrology/23.3.325 |
long_lat |
ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) |
geographic |
Greenland Sund Scoresby Scoresby Sund |
geographic_facet |
Greenland Sund Scoresby Scoresby Sund |
genre |
East Greenland Greenland Scoresby Sund |
genre_facet |
East Greenland Greenland Scoresby Sund |
op_relation |
http://petrology.oxfordjournals.org/cgi/content/short/23/3/325 http://dx.doi.org/10.1093/petrology/23.3.325 |
op_rights |
Copyright (C) 1982, Oxford University Press |
op_doi |
https://doi.org/10.1093/petrology/23.3.325 |
container_title |
Journal of Petrology |
container_volume |
23 |
container_issue |
3 |
container_start_page |
325 |
op_container_end_page |
343 |
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1766399409503862784 |