Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario
Microscopic meteoritic ablation spheres recently found on top of the Victoria Land in Transantarctic Mountains, and in the L2 Dome C and DF2691 Dome Fuji ice core layers document a major impact of a 108kg (or larger) cosmic body in the Antarctic region about 480kyr ago. Although of broadly chondriti...
Published in: | Meteoritics & Planetary Science |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/11568/155832 https://doi.org/10.1111/maps.12011 |
id |
ftunivpisairis:oai:arpi.unipi.it:11568/155832 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisairis:oai:arpi.unipi.it:11568/155832 2024-02-27T08:33:47+00:00 Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario van Ginneken M Suavet C Cordier C FOLCO, LUIGI Rochette P Sonzogni C PERCHIAZZI, NATALE van Ginneken, M Suavet, C Cordier, C Folco, Luigi Rochette, P Sonzogni, C Perchiazzi, Natale 2012 STAMPA http://hdl.handle.net/11568/155832 https://doi.org/10.1111/maps.12011 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000313985100005 volume:47 firstpage:1738 lastpage:1747 numberofpages:20 journal:METEORITICS & PLANETARY SCIENCE http://hdl.handle.net/11568/155832 doi:10.1111/maps.12011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84871613316 info:eu-repo/semantics/article 2012 ftunivpisairis https://doi.org/10.1111/maps.12011 2024-01-31T17:56:19Z Microscopic meteoritic ablation spheres recently found on top of the Victoria Land in Transantarctic Mountains, and in the L2 Dome C and DF2691 Dome Fuji ice core layers document a major impact of a 108kg (or larger) cosmic body in the Antarctic region about 480kyr ago. Although of broadly chondritic composition, the exact nature of the impactor is unknown, and whether the impactor struck the Antarctic ice sheet or exploded in the atmosphere is a matter of debate. Based on oxygen isotope analyses of ablation spheres from the Transantarctic Mountains by means of IR-laser fluorination coupled with mass spectrometry, we suggest that they represent the debris of an atmospheric airburst of a primitive asteroid of CV, CO, or CK composition, or a comet with composition similar to the short-period comet 81P/Wild 2. Article in Journal/Newspaper Antarc* Antarctic ice core Ice Sheet Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) The Antarctic Transantarctic Mountains Victoria Land Meteoritics & Planetary Science 47 11 1738 1747 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
description |
Microscopic meteoritic ablation spheres recently found on top of the Victoria Land in Transantarctic Mountains, and in the L2 Dome C and DF2691 Dome Fuji ice core layers document a major impact of a 108kg (or larger) cosmic body in the Antarctic region about 480kyr ago. Although of broadly chondritic composition, the exact nature of the impactor is unknown, and whether the impactor struck the Antarctic ice sheet or exploded in the atmosphere is a matter of debate. Based on oxygen isotope analyses of ablation spheres from the Transantarctic Mountains by means of IR-laser fluorination coupled with mass spectrometry, we suggest that they represent the debris of an atmospheric airburst of a primitive asteroid of CV, CO, or CK composition, or a comet with composition similar to the short-period comet 81P/Wild 2. |
author2 |
van Ginneken, M Suavet, C Cordier, C Folco, Luigi Rochette, P Sonzogni, C Perchiazzi, Natale |
format |
Article in Journal/Newspaper |
author |
van Ginneken M Suavet C Cordier C FOLCO, LUIGI Rochette P Sonzogni C PERCHIAZZI, NATALE |
spellingShingle |
van Ginneken M Suavet C Cordier C FOLCO, LUIGI Rochette P Sonzogni C PERCHIAZZI, NATALE Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario |
author_facet |
van Ginneken M Suavet C Cordier C FOLCO, LUIGI Rochette P Sonzogni C PERCHIAZZI, NATALE |
author_sort |
van Ginneken M |
title |
Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario |
title_short |
Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario |
title_full |
Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario |
title_fullStr |
Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario |
title_full_unstemmed |
Oxygen isotope composition of meteoritic ablation debris from the Transantarctic Mountain: Constraining the parent body and implications for the impact scenario |
title_sort |
oxygen isotope composition of meteoritic ablation debris from the transantarctic mountain: constraining the parent body and implications for the impact scenario |
publishDate |
2012 |
url |
http://hdl.handle.net/11568/155832 https://doi.org/10.1111/maps.12011 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji The Antarctic Transantarctic Mountains Victoria Land |
geographic_facet |
Antarctic Dome Fuji The Antarctic Transantarctic Mountains Victoria Land |
genre |
Antarc* Antarctic ice core Ice Sheet Victoria Land |
genre_facet |
Antarc* Antarctic ice core Ice Sheet Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000313985100005 volume:47 firstpage:1738 lastpage:1747 numberofpages:20 journal:METEORITICS & PLANETARY SCIENCE http://hdl.handle.net/11568/155832 doi:10.1111/maps.12011 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84871613316 |
op_doi |
https://doi.org/10.1111/maps.12011 |
container_title |
Meteoritics & Planetary Science |
container_volume |
47 |
container_issue |
11 |
container_start_page |
1738 |
op_container_end_page |
1747 |
_version_ |
1792047870956797952 |