Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica
Two silicate-rich dust layers were found in the Dome Fuji ice core in East Antarctica, at Marine Isotope Stages 12 and 13. Morphologies, textures, and chemical compositions of constituent particles reveal that they are high-temperature melting products and are of extraterrestrial origin. Because sim...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848893 2023-05-15T13:44:47+02:00 Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica Misawa, Keji Kohno, Mika Tomiyama, Takayuki Noguchi, Takaaki Nakamura, Tomoki Nagao, Keisuke Mikouchi, Takashi Nishiizumi, Kunihiko LATITUDE: -77.316670 * LONGITUDE: 39.666670 2010-08-27 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.848893 https://doi.org/10.1594/PANGAEA.848893 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.848893 https://doi.org/10.1594/PANGAEA.848893 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Misawa, Keji; Kohno, Mika; Tomiyama, Takayuki; Noguchi, Takaaki; Nakamura, Tomoki; Nagao, Keisuke; Mikouchi, Takashi; Nishiizumi, Kunihiko (2010): Two extraterrestrial dust horizons found in the Dome Fuji ice core, East Antarctica. Earth and Planetary Science Letters, 289(1-2), 287-297, https://doi.org/10.1016/j.epsl.2009.11.016 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.848893 https://doi.org/10.1016/j.epsl.2009.11.016 2023-01-20T07:33:30Z Two silicate-rich dust layers were found in the Dome Fuji ice core in East Antarctica, at Marine Isotope Stages 12 and 13. Morphologies, textures, and chemical compositions of constituent particles reveal that they are high-temperature melting products and are of extraterrestrial origin. Because similar layers were found ~2000 km east of Dome Fuji, at EPICA (European Project for Ice Coring in Antarctica)-Dome C, particles must have rained down over a wide area 434 and 481 ka. The strewn fields occurred over an area of at least 3 × 10**6 km**2. Chemical compositions of constituent phases and oxygen isotopic composition of olivines suggest that the upper dust layer was produced by a high-temperature interaction between silicate-rich melt and water vapor due to an impact explosion or an aerial burst of a chondritic meteoroid on the inland East Antarctic ice sheet. An estimated total mass of the impactor, on the basis of particle flux and distribution area, is at least 3 × 10**9 kg. A possible parent material of the lower dust layer is a fragment of friable primitive asteroid or comet. A hypervelocity impact of asteroidal/cometary material on the upper atmosphere and an explosion might have produced aggregates of sub-µm to µm-sized spherules. Total mass of the parent material of the lower layer must exceed 1 × 10**9 kg. The two extraterrestrial horizons, each a few millimeters in thickness, represent regional or global meteoritic events not identified previously in the Southern Hemisphere. Dataset Antarc* Antarctic Antarctica Arctic East Antarctica EPICA ice core Ice Sheet Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Arctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) East Antarctic Ice Sheet East Antarctica ENVELOPE(39.666670,39.666670,-77.316670,-77.316670) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Misawa, Keji Kohno, Mika Tomiyama, Takayuki Noguchi, Takaaki Nakamura, Tomoki Nagao, Keisuke Mikouchi, Takashi Nishiizumi, Kunihiko Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica |
topic_facet |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
Two silicate-rich dust layers were found in the Dome Fuji ice core in East Antarctica, at Marine Isotope Stages 12 and 13. Morphologies, textures, and chemical compositions of constituent particles reveal that they are high-temperature melting products and are of extraterrestrial origin. Because similar layers were found ~2000 km east of Dome Fuji, at EPICA (European Project for Ice Coring in Antarctica)-Dome C, particles must have rained down over a wide area 434 and 481 ka. The strewn fields occurred over an area of at least 3 × 10**6 km**2. Chemical compositions of constituent phases and oxygen isotopic composition of olivines suggest that the upper dust layer was produced by a high-temperature interaction between silicate-rich melt and water vapor due to an impact explosion or an aerial burst of a chondritic meteoroid on the inland East Antarctic ice sheet. An estimated total mass of the impactor, on the basis of particle flux and distribution area, is at least 3 × 10**9 kg. A possible parent material of the lower dust layer is a fragment of friable primitive asteroid or comet. A hypervelocity impact of asteroidal/cometary material on the upper atmosphere and an explosion might have produced aggregates of sub-µm to µm-sized spherules. Total mass of the parent material of the lower layer must exceed 1 × 10**9 kg. The two extraterrestrial horizons, each a few millimeters in thickness, represent regional or global meteoritic events not identified previously in the Southern Hemisphere. |
format |
Dataset |
author |
Misawa, Keji Kohno, Mika Tomiyama, Takayuki Noguchi, Takaaki Nakamura, Tomoki Nagao, Keisuke Mikouchi, Takashi Nishiizumi, Kunihiko |
author_facet |
Misawa, Keji Kohno, Mika Tomiyama, Takayuki Noguchi, Takaaki Nakamura, Tomoki Nagao, Keisuke Mikouchi, Takashi Nishiizumi, Kunihiko |
author_sort |
Misawa, Keji |
title |
Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica |
title_short |
Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica |
title_full |
Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica |
title_fullStr |
Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica |
title_full_unstemmed |
Isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in Dome Fuji ice core, East Antarctica |
title_sort |
isotopic ratios, concentration of noble gases and mineral and bulk composition of extraterrestrial dust particles in dome fuji ice core, east antarctica |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.848893 https://doi.org/10.1594/PANGAEA.848893 |
op_coverage |
LATITUDE: -77.316670 * LONGITUDE: 39.666670 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(39.666670,39.666670,-77.316670,-77.316670) |
geographic |
Antarctic Arctic Dome Fuji East Antarctic Ice Sheet East Antarctica |
geographic_facet |
Antarctic Arctic Dome Fuji East Antarctic Ice Sheet East Antarctica |
genre |
Antarc* Antarctic Antarctica Arctic East Antarctica EPICA ice core Ice Sheet Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Arctic East Antarctica EPICA ice core Ice Sheet Sea ice |
op_source |
Supplement to: Misawa, Keji; Kohno, Mika; Tomiyama, Takayuki; Noguchi, Takaaki; Nakamura, Tomoki; Nagao, Keisuke; Mikouchi, Takashi; Nishiizumi, Kunihiko (2010): Two extraterrestrial dust horizons found in the Dome Fuji ice core, East Antarctica. Earth and Planetary Science Letters, 289(1-2), 287-297, https://doi.org/10.1016/j.epsl.2009.11.016 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.848893 https://doi.org/10.1594/PANGAEA.848893 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.848893 https://doi.org/10.1016/j.epsl.2009.11.016 |
_version_ |
1766206332773335040 |