Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica
We investigated the mineral assemblage, mineral and bulk-rock chemistry, and zircon U-Pb age of a manganiferous quartzite layer in the Lanterman Range, northern Victoria Land, Antarctica. The mineral assemblage consists primarily of phengite and quartz, along with spessartine-rich garnet, Mn3+ and r...
Published in: | European Journal of Mineralogy |
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Copernicus Publications
2024
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Online Access: | https://hdl.handle.net/2434/1047119 https://doi.org/10.5194/ejm-36-323-2024 https://ejm.copernicus.org/articles/36/323/2024/ |
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ftunivmilanoair:oai:air.unimi.it:2434/1047119 2024-06-09T07:40:59+00:00 Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica Kim, Taehwan Kim, Yoonsup Tumiati, Simone Kim, Daeyeong Yi, Keewook Lee, Mi Jung T. Kim Y. Kim S. Tumiati D. Kim K. Yi M.J. Lee 2024 https://hdl.handle.net/2434/1047119 https://doi.org/10.5194/ejm-36-323-2024 https://ejm.copernicus.org/articles/36/323/2024/ eng eng Copernicus Publications info:eu-repo/semantics/altIdentifier/wos/WOS:001191160600001 volume:36 issue:2 firstpage:323 lastpage:343 numberofpages:21 journal:EUROPEAN JOURNAL OF MINERALOGY https://hdl.handle.net/2434/1047119 doi:10.5194/ejm-36-323-2024 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85188781700 https://ejm.copernicus.org/articles/36/323/2024/ info:eu-repo/semantics/openAccess Settore GEO/07 - Petrologia e Petrografia info:eu-repo/semantics/article 2024 ftunivmilanoair https://doi.org/10.5194/ejm-36-323-2024 2024-05-14T23:37:36Z We investigated the mineral assemblage, mineral and bulk-rock chemistry, and zircon U-Pb age of a manganiferous quartzite layer in the Lanterman Range, northern Victoria Land, Antarctica. The mineral assemblage consists primarily of phengite and quartz, along with spessartine-rich garnet, Mn3+ and rare earth element-yttrium (REY)-zoned epidote-group minerals, and titanohematite. Mineral inclusions such as tephroite, rutile and pyrophanite are hosted in porphyroblasts of the latter three minerals and suggest prograde blueschist-facies to low-T eclogite-facies metamorphism (M-1). Epidote-group minerals commonly exhibit multiple growth zones of piemontite and/or epidote (M-1), REY-rich piemontite (M-2), REY-rich epidote (M-3), and epidote (M-4) from core to rim. Pseudobinary fO(2)-X diagrams at constant P-T support the stability of an epidote-group mineral-bearing assemblage under highly oxidized conditions during prograde M-2 to peak M-3 metamorphism. In marked contrast, tephroite-bearing assemblages (M-1) are limited to relatively reduced environments and Mn-rich, silica-deficient bulk-rock compositions. Mn nodules have such characteristics, and the contribution of this hydrogenous component is inferred from bulk-rock chemical features such as a strong positive Ce anomaly. The major-element composition of the manganiferous quartzite suggests a protolith primarily consisting of a mixture of chert and pelagic clay. The presence of rare detrital zircons supports terrigenous input from a craton and constrains the maximum time of deposition to be ca. 546 Ma. The lack of arc-derived detrital zircons in the quartzite and the predominance of siliciclastic metasedimentary rocks among the surrounding rocks suggest that the deep-sea protolith was most likely deposited in an arc/back-arc setting at a continental margin. High-P metamorphism associated with terrane accretion during the Ross orogeny took place in the middle Cambrian (ca. 506 Ma), broadly coeval with the metamorphic peak recorded in the associated high-P rocks ... Article in Journal/Newspaper Antarc* Antarctica Victoria Land The University of Milan: Archivio Istituzionale della Ricerca (AIR) Lanterman Range ENVELOPE(163.167,163.167,-71.667,-71.667) Victoria Land European Journal of Mineralogy 36 2 323 343 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Settore GEO/07 - Petrologia e Petrografia |
spellingShingle |
Settore GEO/07 - Petrologia e Petrografia Kim, Taehwan Kim, Yoonsup Tumiati, Simone Kim, Daeyeong Yi, Keewook Lee, Mi Jung Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica |
topic_facet |
Settore GEO/07 - Petrologia e Petrografia |
description |
We investigated the mineral assemblage, mineral and bulk-rock chemistry, and zircon U-Pb age of a manganiferous quartzite layer in the Lanterman Range, northern Victoria Land, Antarctica. The mineral assemblage consists primarily of phengite and quartz, along with spessartine-rich garnet, Mn3+ and rare earth element-yttrium (REY)-zoned epidote-group minerals, and titanohematite. Mineral inclusions such as tephroite, rutile and pyrophanite are hosted in porphyroblasts of the latter three minerals and suggest prograde blueschist-facies to low-T eclogite-facies metamorphism (M-1). Epidote-group minerals commonly exhibit multiple growth zones of piemontite and/or epidote (M-1), REY-rich piemontite (M-2), REY-rich epidote (M-3), and epidote (M-4) from core to rim. Pseudobinary fO(2)-X diagrams at constant P-T support the stability of an epidote-group mineral-bearing assemblage under highly oxidized conditions during prograde M-2 to peak M-3 metamorphism. In marked contrast, tephroite-bearing assemblages (M-1) are limited to relatively reduced environments and Mn-rich, silica-deficient bulk-rock compositions. Mn nodules have such characteristics, and the contribution of this hydrogenous component is inferred from bulk-rock chemical features such as a strong positive Ce anomaly. The major-element composition of the manganiferous quartzite suggests a protolith primarily consisting of a mixture of chert and pelagic clay. The presence of rare detrital zircons supports terrigenous input from a craton and constrains the maximum time of deposition to be ca. 546 Ma. The lack of arc-derived detrital zircons in the quartzite and the predominance of siliciclastic metasedimentary rocks among the surrounding rocks suggest that the deep-sea protolith was most likely deposited in an arc/back-arc setting at a continental margin. High-P metamorphism associated with terrane accretion during the Ross orogeny took place in the middle Cambrian (ca. 506 Ma), broadly coeval with the metamorphic peak recorded in the associated high-P rocks ... |
author2 |
T. Kim Y. Kim S. Tumiati D. Kim K. Yi M.J. Lee |
format |
Article in Journal/Newspaper |
author |
Kim, Taehwan Kim, Yoonsup Tumiati, Simone Kim, Daeyeong Yi, Keewook Lee, Mi Jung |
author_facet |
Kim, Taehwan Kim, Yoonsup Tumiati, Simone Kim, Daeyeong Yi, Keewook Lee, Mi Jung |
author_sort |
Kim, Taehwan |
title |
Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica |
title_short |
Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica |
title_full |
Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica |
title_fullStr |
Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica |
title_full_unstemmed |
Sedimentary protolith and high-P metamorphism of oxidized manganiferous quartzite from the Lanterman Range, northern Victoria Land, Antarctica |
title_sort |
sedimentary protolith and high-p metamorphism of oxidized manganiferous quartzite from the lanterman range, northern victoria land, antarctica |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://hdl.handle.net/2434/1047119 https://doi.org/10.5194/ejm-36-323-2024 https://ejm.copernicus.org/articles/36/323/2024/ |
long_lat |
ENVELOPE(163.167,163.167,-71.667,-71.667) |
geographic |
Lanterman Range Victoria Land |
geographic_facet |
Lanterman Range Victoria Land |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:001191160600001 volume:36 issue:2 firstpage:323 lastpage:343 numberofpages:21 journal:EUROPEAN JOURNAL OF MINERALOGY https://hdl.handle.net/2434/1047119 doi:10.5194/ejm-36-323-2024 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85188781700 https://ejm.copernicus.org/articles/36/323/2024/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/ejm-36-323-2024 |
container_title |
European Journal of Mineralogy |
container_volume |
36 |
container_issue |
2 |
container_start_page |
323 |
op_container_end_page |
343 |
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1801369387935989760 |