Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica
Landforms of Balchenfjella (Balchen Mountain) and nunataks near it in the Sør Rondane, East Antarctica, were described using a geomorphological map compiled from field work and aerial photographic interpretation for Balchenfjella and aerial photographic stereograms for major nunataks. While the nuna...
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National Institute of Polar Research
1989
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ftdoajarticles:oai:doaj.org/article:8059a99525e044f19bb921c4fb90f13a 2023-05-15T13:47:39+02:00 Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica Masamu Aniya 1989-11-01T00:00:00Z https://doi.org/10.15094/00008644 https://doaj.org/article/8059a99525e044f19bb921c4fb90f13a EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00008644 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008644 0085-7289 2432-079X https://doaj.org/article/8059a99525e044f19bb921c4fb90f13a Antarctic Record, Vol 33, Iss 3, Pp 353-375 (1989) Geography (General) G1-922 article 1989 ftdoajarticles https://doi.org/10.15094/00008644 2022-12-30T22:00:31Z Landforms of Balchenfjella (Balchen Mountain) and nunataks near it in the Sør Rondane, East Antarctica, were described using a geomorphological map compiled from field work and aerial photographic interpretation for Balchenfjella and aerial photographic stereograms for major nunataks. While the nunataks are in general standing out above the general surrounding ice surfaces and many of them show landforms of alpine glacier origin, Balchenfjella is characterized by landforms of areal scouring owing to continental ice-sheet glaciation and most of the area still lies below the surrounding ice surface. In this regard, Balchenfjella is found to be very unique in the Sør Rondane. Distinctive demarcation lines between the surfaces of weathered materials and fresh bedrocks found at the eastern side of the several nunataks and Balchenfjella suggest a recent lowering of the ice-sheet surface by several tens of meters. Wide covers of weathered erratics and/or tills over Balchenfjella indicate that the mountain was once covered by ice tongues spilling and closing in from surrounding sides and ablation was very extensive there. Based on the spatial distribution of weathered materials, the relative deglaciation sequence was inferred for Balchenfjella, finding that the eastern part, although higher, was most recently deglaciated. Schematic sequences of weathering, erosional and depositional processes working after deglaciation and their effects on the exposed surface were tentatively presented and the surface characteristics were listed for parts of Balchenfjella and each nunatak. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Ice Sheet Directory of Open Access Journals: DOAJ Articles East Antarctica Sør-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) Balchen ENVELOPE(-166.200,-166.200,-85.367,-85.367) Balchenfjella ENVELOPE(27.200,27.200,-72.000,-72.000) Balchen Mountain ENVELOPE(27.200,27.200,-72.000,-72.000) |
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 Masamu Aniya Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica |
topic_facet |
Geography (General) G1-922 |
description |
Landforms of Balchenfjella (Balchen Mountain) and nunataks near it in the Sør Rondane, East Antarctica, were described using a geomorphological map compiled from field work and aerial photographic interpretation for Balchenfjella and aerial photographic stereograms for major nunataks. While the nunataks are in general standing out above the general surrounding ice surfaces and many of them show landforms of alpine glacier origin, Balchenfjella is characterized by landforms of areal scouring owing to continental ice-sheet glaciation and most of the area still lies below the surrounding ice surface. In this regard, Balchenfjella is found to be very unique in the Sør Rondane. Distinctive demarcation lines between the surfaces of weathered materials and fresh bedrocks found at the eastern side of the several nunataks and Balchenfjella suggest a recent lowering of the ice-sheet surface by several tens of meters. Wide covers of weathered erratics and/or tills over Balchenfjella indicate that the mountain was once covered by ice tongues spilling and closing in from surrounding sides and ablation was very extensive there. Based on the spatial distribution of weathered materials, the relative deglaciation sequence was inferred for Balchenfjella, finding that the eastern part, although higher, was most recently deglaciated. Schematic sequences of weathering, erosional and depositional processes working after deglaciation and their effects on the exposed surface were tentatively presented and the surface characteristics were listed for parts of Balchenfjella and each nunatak. |
format |
Article in Journal/Newspaper |
author |
Masamu Aniya |
author_facet |
Masamu Aniya |
author_sort |
Masamu Aniya |
title |
Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica |
title_short |
Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica |
title_full |
Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica |
title_fullStr |
Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica |
title_full_unstemmed |
Landforms of the Balchenfjella area, the Sør Rondane, East Antarctica |
title_sort |
landforms of the balchenfjella area, the sør rondane, east antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1989 |
url |
https://doi.org/10.15094/00008644 https://doaj.org/article/8059a99525e044f19bb921c4fb90f13a |
long_lat |
ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(-166.200,-166.200,-85.367,-85.367) ENVELOPE(27.200,27.200,-72.000,-72.000) ENVELOPE(27.200,27.200,-72.000,-72.000) |
geographic |
East Antarctica Sør-Rondane Balchen Balchenfjella Balchen Mountain |
geographic_facet |
East Antarctica Sør-Rondane Balchen Balchenfjella Balchen Mountain |
genre |
Antarc* Antarctica East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica East Antarctica Ice Sheet |
op_source |
Antarctic Record, Vol 33, Iss 3, Pp 353-375 (1989) |
op_relation |
https://doi.org/10.15094/00008644 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008644 0085-7289 2432-079X https://doaj.org/article/8059a99525e044f19bb921c4fb90f13a |
op_doi |
https://doi.org/10.15094/00008644 |
_version_ |
1766247589343133696 |