Suspected meteorite fragments in marine sediments from East Antarctica

Naresh C. Pant; Francisco J. Jimenez-Espejo; Cary P. Cook; Paromita Biswas; Robert McKay; Claudio Marchesi; Motoo Ito; Dewashish Upadhyay; Junichiro Kuroda; Kenji Shimizu; Ryoko Senda; Tina Van De Flierdt; Yoshinori Takano; Katsuhiko Suzuki; Carlota Escutia; Prakash K. Shrivastava

doi:10.1017/S0954102018000299

Suspected meteorite fragments in marine sediments from East Antarctica

Naresh C. Pant, Francisco J. Jimenez-Espejo, Cary P. Cook, Paromita Biswas, Robert McKay, Claudio Marchesi, Motoo Ito, Dewashish Upadhyay, Junichiro Kuroda, Kenji Shimizu, Ryoko Senda, Tina Van De Flierdt, Yoshinori Takano, Katsuhiko Suzuki, Carlota Escutia, Prakash K. Shrivastava

Department of Environmental Changes

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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.

Original language	English
Pages (from-to)	307-321
Number of pages	15
Journal	Antarctic Science
Volume	30
Issue number	5
DOIs	https://doi.org/10.1017/S0954102018000299
Publication status	Published - Oct 1 2018

All Science Journal Classification (ASJC) codes

Oceanography
Ecology, Evolution, Behavior and Systematics
Geology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1017/S0954102018000299

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Pant, N. C., Jimenez-Espejo, F. J., Cook, C. P., Biswas, P., McKay, R., Marchesi, C., Ito, M., Upadhyay, D., Kuroda, J., Shimizu, K., Senda, R., Van De Flierdt, T., Takano, Y., Suzuki, K., Escutia, C., & Shrivastava, P. K. (2018). Suspected meteorite fragments in marine sediments from East Antarctica. Antarctic Science, 30(5), 307-321. https://doi.org/10.1017/S0954102018000299

@article{7baf1db070234b08abf113e1f80f2195,

title = "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 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.",

author = "Pant, {Naresh C.} and Jimenez-Espejo, {Francisco J.} and Cook, {Cary P.} and Paromita Biswas and Robert McKay and Claudio Marchesi and Motoo Ito and Dewashish Upadhyay and Junichiro Kuroda and Kenji Shimizu and Ryoko Senda and {Van De Flierdt}, Tina and Yoshinori Takano and Katsuhiko Suzuki and Carlota Escutia and Shrivastava, {Prakash K.}",

note = "Publisher Copyright: {\textcopyright} Antarctic Science Ltd 2018.",

year = "2018",

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doi = "10.1017/S0954102018000299",

language = "English",

volume = "30",

pages = "307--321",

journal = "Antarctic Science",

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TY - JOUR

T1 - Suspected meteorite fragments in marine sediments from East Antarctica

AU - Pant, Naresh C.

AU - Jimenez-Espejo, Francisco J.

AU - Cook, Cary P.

AU - Biswas, Paromita

AU - McKay, Robert

AU - Marchesi, Claudio

AU - Ito, Motoo

AU - Upadhyay, Dewashish

AU - Kuroda, Junichiro

AU - Shimizu, Kenji

AU - Senda, Ryoko

AU - Van De Flierdt, Tina

AU - Takano, Yoshinori

AU - Suzuki, Katsuhiko

AU - Escutia, Carlota

AU - Shrivastava, Prakash K.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - 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.

AB - 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.

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DO - 10.1017/S0954102018000299

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EP - 321

JO - Antarctic Science

JF - Antarctic Science

IS - 5

ER -

Suspected meteorite fragments in marine sediments from East Antarctica

Abstract

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UN SDGs

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