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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ftreroch:oai:doc.rero.ch:289380 2023-05-15T16:03:43+02:00 Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland BUCHER-NURMINEN, K. 2017-08-02T19:31:44Z http://doc.rero.ch/record/289380/files/23-3-325.pdf eng eng http://doc.rero.ch/record/289380/files/23-3-325.pdf 2017 ftreroch 2023-02-16T17:27:30Z 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 Other/Unknown Material East Greenland Greenland Scoresby Sund RERO DOC Digital Library Greenland Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) Sund ENVELOPE(13.644,13.644,66.207,66.207) |
institution |
Open Polar |
collection |
RERO DOC Digital Library |
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ftreroch |
language |
English |
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 |
author |
BUCHER-NURMINEN, K. |
spellingShingle |
BUCHER-NURMINEN, K. Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland |
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 |
publishDate |
2017 |
url |
http://doc.rero.ch/record/289380/files/23-3-325.pdf |
long_lat |
ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(13.644,13.644,66.207,66.207) |
geographic |
Greenland Scoresby Scoresby Sund Sund |
geographic_facet |
Greenland Scoresby Scoresby Sund Sund |
genre |
East Greenland Greenland Scoresby Sund |
genre_facet |
East Greenland Greenland Scoresby Sund |
op_relation |
http://doc.rero.ch/record/289380/files/23-3-325.pdf |
_version_ |
1766399411491962880 |