Suspected meteorite fragments in marine sediments from East Antarctica
Abstract Unusual mafic rock fragments deposited in Plio-Pleistocene-aged marine sediments were recorded at Integrated Ocean Drilling Program (IODP) Site U1359, in Wilkes Land, East Antarctica. These fragments were identified from sediment layers deposited between c. 3 and 1.2 Ma, indicating a sustai...
Published in: | Antarctic Science |
---|---|
Main Authors: | , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2018
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102018000299 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000299 |
id |
crcambridgeupr:10.1017/s0954102018000299 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102018000299 2024-03-03T08:38:47+00:00 Suspected meteorite fragments in marine sediments from East Antarctica Pant, Naresh C. Jimenez-Espejo, Francisco J. Cook, Cary P. Biswas, Paromita Mckay, Robert Marchesi, Claudio Ito, Motoo Upadhyay, Dewashish Kuroda, Junichiro Shimizu, Kenji Senda, Ryoko Van De Flierdt, Tina Takano, Yoshinori Suzuki, Katsuhiko Escutia, Carlota Shrivastava, Prakash K. 2018 http://dx.doi.org/10.1017/s0954102018000299 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000299 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms Antarctic Science volume 30, issue 5, page 307-321 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2018 crcambridgeupr https://doi.org/10.1017/s0954102018000299 2024-02-08T08:39:16Z Abstract Unusual mafic rock fragments deposited in Plio-Pleistocene-aged marine sediments were recorded at Integrated Ocean Drilling Program (IODP) Site U1359, in Wilkes Land, East Antarctica. These fragments were identified from sediment layers deposited between c. 3 and 1.2 Ma, indicating a sustained supply during this time interval. Clinopyroxenes in these basalts are Al–Ti diopside–hedenbergite, uncommon in terrestrial magmatic rocks. A single strong peak in the Raman spectra of a phosphate-bearing mineral at 963 cm -1 supports the presence of merrillite. Although not conclusive, petrological traits and oxygen isotopic compositions also suggest that the fragments may be extra-terrestrial fragments affected by shock metamorphism. Nevertheless, it is concluded that the basaltic fragments incorporated in marine sediments at Site U1359 represent ice-rafted material supplied to the continental rise of East Antarctica, probably from the bedrocks near the proximal Ninnis Glacier. Further studies on Plio-Pleistocene sediments near Site U1359 are required to characterize the unusual mafic rocks described. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica Ninnis Glacier Wilkes Land Cambridge University Press East Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Strong Peak ENVELOPE(-82.300,-82.300,-79.933,-79.933) Ninnis Glacier ENVELOPE(-68.511,-68.511,81.165,81.165) Antarctic Science 30 5 307 321 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Pant, Naresh C. Jimenez-Espejo, Francisco J. Cook, Cary P. Biswas, Paromita Mckay, Robert Marchesi, Claudio Ito, Motoo Upadhyay, Dewashish Kuroda, Junichiro Shimizu, Kenji Senda, Ryoko Van De Flierdt, Tina Takano, Yoshinori Suzuki, Katsuhiko Escutia, Carlota Shrivastava, Prakash K. Suspected meteorite fragments in marine sediments from East Antarctica |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Unusual mafic rock fragments deposited in Plio-Pleistocene-aged marine sediments were recorded at Integrated Ocean Drilling Program (IODP) Site U1359, in Wilkes Land, East Antarctica. These fragments were identified from sediment layers deposited between c. 3 and 1.2 Ma, indicating a sustained supply during this time interval. Clinopyroxenes in these basalts are Al–Ti diopside–hedenbergite, uncommon in terrestrial magmatic rocks. A single strong peak in the Raman spectra of a phosphate-bearing mineral at 963 cm -1 supports the presence of merrillite. Although not conclusive, petrological traits and oxygen isotopic compositions also suggest that the fragments may be extra-terrestrial fragments affected by shock metamorphism. Nevertheless, it is concluded that the basaltic fragments incorporated in marine sediments at Site U1359 represent ice-rafted material supplied to the continental rise of East Antarctica, probably from the bedrocks near the proximal Ninnis Glacier. Further studies on Plio-Pleistocene sediments near Site U1359 are required to characterize the unusual mafic rocks described. |
format |
Article in Journal/Newspaper |
author |
Pant, Naresh C. Jimenez-Espejo, Francisco J. Cook, Cary P. Biswas, Paromita Mckay, Robert Marchesi, Claudio Ito, Motoo Upadhyay, Dewashish Kuroda, Junichiro Shimizu, Kenji Senda, Ryoko Van De Flierdt, Tina Takano, Yoshinori Suzuki, Katsuhiko Escutia, Carlota Shrivastava, Prakash K. |
author_facet |
Pant, Naresh C. Jimenez-Espejo, Francisco J. Cook, Cary P. Biswas, Paromita Mckay, Robert Marchesi, Claudio Ito, Motoo Upadhyay, Dewashish Kuroda, Junichiro Shimizu, Kenji Senda, Ryoko Van De Flierdt, Tina Takano, Yoshinori Suzuki, Katsuhiko Escutia, Carlota Shrivastava, Prakash K. |
author_sort |
Pant, Naresh C. |
title |
Suspected meteorite fragments in marine sediments from East Antarctica |
title_short |
Suspected meteorite fragments in marine sediments from East Antarctica |
title_full |
Suspected meteorite fragments in marine sediments from East Antarctica |
title_fullStr |
Suspected meteorite fragments in marine sediments from East Antarctica |
title_full_unstemmed |
Suspected meteorite fragments in marine sediments from East Antarctica |
title_sort |
suspected meteorite fragments in marine sediments from east antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1017/s0954102018000299 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000299 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) ENVELOPE(-82.300,-82.300,-79.933,-79.933) ENVELOPE(-68.511,-68.511,81.165,81.165) |
geographic |
East Antarctica Wilkes Land Strong Peak Ninnis Glacier |
geographic_facet |
East Antarctica Wilkes Land Strong Peak Ninnis Glacier |
genre |
Antarc* Antarctic Science Antarctica East Antarctica Ninnis Glacier Wilkes Land |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica Ninnis Glacier Wilkes Land |
op_source |
Antarctic Science volume 30, issue 5, page 307-321 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102018000299 |
container_title |
Antarctic Science |
container_volume |
30 |
container_issue |
5 |
container_start_page |
307 |
op_container_end_page |
321 |
_version_ |
1792507231000854528 |