Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields
Dust bands in the blue-ice of the Frontier Mountain meteorite trap (northern Victoria Land, Antarctica) were previously reported as upthrust basal debris. Four of them have now been sampled at Frontier Mountain and Lichen Hills. The absence of local rocks and sedimentary fragments, the ubiquitous ab...
Main Authors: | , , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1999
|
Subjects: | |
Online Access: | http://hdl.handle.net/11568/160831 |
id |
ftunivpisairis:oai:arpi.unipi.it:11568/160831 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisairis:oai:arpi.unipi.it:11568/160831 2024-04-21T07:47:15+00:00 Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields PERCHIAZZI, NATALE FOLCO, LUIGI Mellini M. Perchiazzi, Natale Folco, Luigi Mellini, M. 1999 STAMPA http://hdl.handle.net/11568/160831 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000086753000010 volume:11 firstpage:353 lastpage:361 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11568/160831 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0033197715 info:eu-repo/semantics/article 1999 ftunivpisairis 2024-03-28T01:25:59Z Dust bands in the blue-ice of the Frontier Mountain meteorite trap (northern Victoria Land, Antarctica) were previously reported as upthrust basal debris. Four of them have now been sampled at Frontier Mountain and Lichen Hills. The absence of local rocks and sedimentary fragments, the ubiquitous abundant volcanic glass with no evidence for abrasion, the igneous minerals, the chemical compositions of glass and minerals and the bulk chemical compositions indicate that they are volcanic ash bands (tephra) and not glacial debris. Although hardly distinguishable in the field, the different volcanic ash bands are discriminated using mineralogical and chemical data, as well as particle size, abundance and vesicularity of glass. Chronological constraints, particle size and chemical compositions localize the source for the Frontier Mountain and Lichen Hills tephra within the recent activity of the Mount Melbourne Volcanic Province in northern Victoria Land; possible emission centres are the Pleiades (40 ± 50 ka to 3 ± 14 ka) and/or Mount Rittmann (3.97 Ma to present). Article in Journal/Newspaper Antarc* Antarctica Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
Dust bands in the blue-ice of the Frontier Mountain meteorite trap (northern Victoria Land, Antarctica) were previously reported as upthrust basal debris. Four of them have now been sampled at Frontier Mountain and Lichen Hills. The absence of local rocks and sedimentary fragments, the ubiquitous abundant volcanic glass with no evidence for abrasion, the igneous minerals, the chemical compositions of glass and minerals and the bulk chemical compositions indicate that they are volcanic ash bands (tephra) and not glacial debris. Although hardly distinguishable in the field, the different volcanic ash bands are discriminated using mineralogical and chemical data, as well as particle size, abundance and vesicularity of glass. Chronological constraints, particle size and chemical compositions localize the source for the Frontier Mountain and Lichen Hills tephra within the recent activity of the Mount Melbourne Volcanic Province in northern Victoria Land; possible emission centres are the Pleiades (40 ± 50 ka to 3 ± 14 ka) and/or Mount Rittmann (3.97 Ma to present). |
author2 |
Perchiazzi, Natale Folco, Luigi Mellini, M. |
format |
Article in Journal/Newspaper |
author |
PERCHIAZZI, NATALE FOLCO, LUIGI Mellini M. |
spellingShingle |
PERCHIAZZI, NATALE FOLCO, LUIGI Mellini M. Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields |
author_facet |
PERCHIAZZI, NATALE FOLCO, LUIGI Mellini M. |
author_sort |
PERCHIAZZI, NATALE |
title |
Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields |
title_short |
Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields |
title_full |
Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields |
title_fullStr |
Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields |
title_full_unstemmed |
Volcanic ash bands in the Frontier Mountain and Lichen Hills blue-ice fields |
title_sort |
volcanic ash bands in the frontier mountain and lichen hills blue-ice fields |
publishDate |
1999 |
url |
http://hdl.handle.net/11568/160831 |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000086753000010 volume:11 firstpage:353 lastpage:361 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11568/160831 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0033197715 |
_version_ |
1796945972208599040 |