Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica
Dirt bands were observed on the surface of the bare ice fields around the SΦr Rondane Mountains during the search for Antarctic meteorites in 1988-1989. Dirt bands were commonly distributed on the bare ice around the mountains, especially in Nansenisen. Dirt bands were collected and filtered after m...
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National Institute of Polar Research
1991
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ftdoajarticles:oai:doaj.org/article:bf160d8dd10242ab931801db5789d47b 2023-05-15T13:37:55+02:00 Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica Hiroshi Naraoka Keizo Yanai Shuji Fujita 1991-03-01T00:00:00Z https://doi.org/10.15094/00008711 https://doaj.org/article/bf160d8dd10242ab931801db5789d47b EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00008711 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008711 0085-7289 2432-079X https://doaj.org/article/bf160d8dd10242ab931801db5789d47b Antarctic Record, Vol 35, Iss 1, Pp 47-55 (1991) Geography (General) G1-922 article 1991 ftdoajarticles https://doi.org/10.15094/00008711 2023-01-08T01:37:53Z Dirt bands were observed on the surface of the bare ice fields around the SΦr Rondane Mountains during the search for Antarctic meteorites in 1988-1989. Dirt bands were commonly distributed on the bare ice around the mountains, especially in Nansenisen. Dirt bands were collected and filtered after melting. Microscopic observation revealed that dust materials were composed mainly of volcanic glass shards. Five types of volcanic ash were preliminarily clarified with respect to the colors (black, dark gray, gray, reddish brown and pale gray) and sizes (5-50μm) of the particles. The EPMA chemical analyses indicated that the volcanic glass shards contained 50-70% SiO_2 and belonged to the nonalkaline region considering from the SiO_2-(Na_2O+K_2O) diagram. Article in Journal/Newspaper Antarc* Antarctic Antarctica Queen Maud Land Directory of Open Access Journals: DOAJ Articles Antarctic Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) Sor-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) Sor Rondane Mountains ENVELOPE(25.000,25.000,-72.000,-72.000) Nansenisen ENVELOPE(24.000,24.000,-72.500,-72.500) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Hiroshi Naraoka Keizo Yanai Shuji Fujita Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica |
topic_facet |
Geography (General) G1-922 |
description |
Dirt bands were observed on the surface of the bare ice fields around the SΦr Rondane Mountains during the search for Antarctic meteorites in 1988-1989. Dirt bands were commonly distributed on the bare ice around the mountains, especially in Nansenisen. Dirt bands were collected and filtered after melting. Microscopic observation revealed that dust materials were composed mainly of volcanic glass shards. Five types of volcanic ash were preliminarily clarified with respect to the colors (black, dark gray, gray, reddish brown and pale gray) and sizes (5-50μm) of the particles. The EPMA chemical analyses indicated that the volcanic glass shards contained 50-70% SiO_2 and belonged to the nonalkaline region considering from the SiO_2-(Na_2O+K_2O) diagram. |
format |
Article in Journal/Newspaper |
author |
Hiroshi Naraoka Keizo Yanai Shuji Fujita |
author_facet |
Hiroshi Naraoka Keizo Yanai Shuji Fujita |
author_sort |
Hiroshi Naraoka |
title |
Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica |
title_short |
Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica |
title_full |
Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica |
title_fullStr |
Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica |
title_full_unstemmed |
Dirt bands in the bare ice area around the Sor Rondane Mountains in Queen Maud Land, Antarctica |
title_sort |
dirt bands in the bare ice area around the sor rondane mountains in queen maud land, antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1991 |
url |
https://doi.org/10.15094/00008711 https://doaj.org/article/bf160d8dd10242ab931801db5789d47b |
long_lat |
ENVELOPE(12.000,12.000,-72.500,-72.500) ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(24.000,24.000,-72.500,-72.500) |
geographic |
Antarctic Queen Maud Land Sor-Rondane Sor Rondane Mountains Nansenisen |
geographic_facet |
Antarctic Queen Maud Land Sor-Rondane Sor Rondane Mountains Nansenisen |
genre |
Antarc* Antarctic Antarctica Queen Maud Land |
genre_facet |
Antarc* Antarctic Antarctica Queen Maud Land |
op_source |
Antarctic Record, Vol 35, Iss 1, Pp 47-55 (1991) |
op_relation |
http://doi.org/10.15094/00008711 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008711 0085-7289 2432-079X https://doaj.org/article/bf160d8dd10242ab931801db5789d47b |
op_doi |
https://doi.org/10.15094/00008711 |
_version_ |
1766099465652928512 |