The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record

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The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record. / Costa, Maria M.; Jensen, Ninna K.; Bouvier, Laura C.; Connelly, James N.; Mikouchi, Takashi; Horstwood, Matthew S. A.; Suuronen, Jussi-Petteri; Moynier, Frederic; Deng, Zhengbin; Agranier, Arnaud; Martin, Laure A. J.; Johnson, Tim E.; Nemchin, Alexander A.; Bizzarro, Martin.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 117, No. 49, 2020, p. 30973-30979.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Costa, MM, Jensen, NK, Bouvier, LC, Connelly, JN, Mikouchi, T, Horstwood, MSA, Suuronen, J-P, Moynier, F, Deng, Z, Agranier, A, Martin, LAJ, Johnson, TE, Nemchin, AA & Bizzarro, M 2020, 'The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record', Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 49, pp. 30973-30979. https://doi.org/10.1073/pnas.2016326117

APA

Costa, M. M., Jensen, N. K., Bouvier, L. C., Connelly, J. N., Mikouchi, T., Horstwood, M. S. A., Suuronen, J-P., Moynier, F., Deng, Z., Agranier, A., Martin, L. A. J., Johnson, T. E., Nemchin, A. A., & Bizzarro, M. (2020). The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record. Proceedings of the National Academy of Sciences of the United States of America, 117(49), 30973-30979. https://doi.org/10.1073/pnas.2016326117

Vancouver

Costa MM, Jensen NK, Bouvier LC, Connelly JN, Mikouchi T, Horstwood MSA et al. The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record. Proceedings of the National Academy of Sciences of the United States of America. 2020;117(49):30973-30979. https://doi.org/10.1073/pnas.2016326117

Author

Costa, Maria M. ; Jensen, Ninna K. ; Bouvier, Laura C. ; Connelly, James N. ; Mikouchi, Takashi ; Horstwood, Matthew S. A. ; Suuronen, Jussi-Petteri ; Moynier, Frederic ; Deng, Zhengbin ; Agranier, Arnaud ; Martin, Laure A. J. ; Johnson, Tim E. ; Nemchin, Alexander A. ; Bizzarro, Martin. / The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record. In: Proceedings of the National Academy of Sciences of the United States of America. 2020 ; Vol. 117, No. 49. pp. 30973-30979.

Bibtex

@article{809701c75a2d400198d7e57f9a480079,
title = "The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record",
abstract = "Combining U-Pb ages with Lu-Hf data in zircon provides insights into the magmatic history of rocky planets. The Northwest Africa (NWA) 7034/7533 meteorites are samples of the southern highlands of Mars containing zircon with ages as old as 4476.3 +/- 0.9 Ma, interpreted to reflect reworking of the primordial Martian crust by impacts. We extracted a statistically significant zircon population (n = 57) from NWA 7533 that defines a temporal record spanning 4.2 Gyr. Ancient zircons record ages from 4485.5 +/- 2.2 Ma to 4331.0 +/- 1.4 Ma, defining a bimodal distribution with groupings at 4474 +/- 10 Ma and 4442 +/- 17 Ma. We interpret these to represent intense bombardment episodes at the planet's surface, possibly triggered by the early migration of gas giant planets. The unradiogenic initial Hf-isotope composition of these zircons establishes that Mars's igneous activity prior to similar to 4.3 Ga was limited to impact-related reworking of a chemically enriched, primordial crust. A group of younger detrital zircons record ages from 1548.0 +/- 8.8 Ma to 299.5 +/- 0.6 Ma. The only plausible sources for these grains are the temporally associated Elysium and Tharsis volcanic provinces that are the expressions of deep-seated mantle plumes. The chondritic-like Hf-isotope compositions of these zircons require the existence of a primitive and convecting mantle reservoir, indicating that Mars has been in a stagnant-lid tectonic regime for most of its history. Our results imply that zircon is ubiquitous on the Martian surface, providing a faithful record of the planet's magmatic history.",
keywords = "Mars, meteorites, zircon, geodynamics, MARTIAN MANTLE, MAGMA OCEAN, HISTORY, ORIGIN, CRUST, SYSTEMATICS, CONVECTION, MINERALOGY, AGE",
author = "Costa, {Maria M.} and Jensen, {Ninna K.} and Bouvier, {Laura C.} and Connelly, {James N.} and Takashi Mikouchi and Horstwood, {Matthew S. A.} and Jussi-Petteri Suuronen and Frederic Moynier and Zhengbin Deng and Arnaud Agranier and Martin, {Laure A. J.} and Johnson, {Tim E.} and Nemchin, {Alexander A.} and Martin Bizzarro",
year = "2020",
doi = "10.1073/pnas.2016326117",
language = "English",
volume = "117",
pages = "30973--30979",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "The National Academy of Sciences of the United States of America",
number = "49",

}

RIS

TY - JOUR

T1 - The internal structure and geodynamics of Mars inferred from a 4.2-Gyr zircon record

AU - Costa, Maria M.

AU - Jensen, Ninna K.

AU - Bouvier, Laura C.

AU - Connelly, James N.

AU - Mikouchi, Takashi

AU - Horstwood, Matthew S. A.

AU - Suuronen, Jussi-Petteri

AU - Moynier, Frederic

AU - Deng, Zhengbin

AU - Agranier, Arnaud

AU - Martin, Laure A. J.

AU - Johnson, Tim E.

AU - Nemchin, Alexander A.

AU - Bizzarro, Martin

PY - 2020

Y1 - 2020

N2 - Combining U-Pb ages with Lu-Hf data in zircon provides insights into the magmatic history of rocky planets. The Northwest Africa (NWA) 7034/7533 meteorites are samples of the southern highlands of Mars containing zircon with ages as old as 4476.3 +/- 0.9 Ma, interpreted to reflect reworking of the primordial Martian crust by impacts. We extracted a statistically significant zircon population (n = 57) from NWA 7533 that defines a temporal record spanning 4.2 Gyr. Ancient zircons record ages from 4485.5 +/- 2.2 Ma to 4331.0 +/- 1.4 Ma, defining a bimodal distribution with groupings at 4474 +/- 10 Ma and 4442 +/- 17 Ma. We interpret these to represent intense bombardment episodes at the planet's surface, possibly triggered by the early migration of gas giant planets. The unradiogenic initial Hf-isotope composition of these zircons establishes that Mars's igneous activity prior to similar to 4.3 Ga was limited to impact-related reworking of a chemically enriched, primordial crust. A group of younger detrital zircons record ages from 1548.0 +/- 8.8 Ma to 299.5 +/- 0.6 Ma. The only plausible sources for these grains are the temporally associated Elysium and Tharsis volcanic provinces that are the expressions of deep-seated mantle plumes. The chondritic-like Hf-isotope compositions of these zircons require the existence of a primitive and convecting mantle reservoir, indicating that Mars has been in a stagnant-lid tectonic regime for most of its history. Our results imply that zircon is ubiquitous on the Martian surface, providing a faithful record of the planet's magmatic history.

AB - Combining U-Pb ages with Lu-Hf data in zircon provides insights into the magmatic history of rocky planets. The Northwest Africa (NWA) 7034/7533 meteorites are samples of the southern highlands of Mars containing zircon with ages as old as 4476.3 +/- 0.9 Ma, interpreted to reflect reworking of the primordial Martian crust by impacts. We extracted a statistically significant zircon population (n = 57) from NWA 7533 that defines a temporal record spanning 4.2 Gyr. Ancient zircons record ages from 4485.5 +/- 2.2 Ma to 4331.0 +/- 1.4 Ma, defining a bimodal distribution with groupings at 4474 +/- 10 Ma and 4442 +/- 17 Ma. We interpret these to represent intense bombardment episodes at the planet's surface, possibly triggered by the early migration of gas giant planets. The unradiogenic initial Hf-isotope composition of these zircons establishes that Mars's igneous activity prior to similar to 4.3 Ga was limited to impact-related reworking of a chemically enriched, primordial crust. A group of younger detrital zircons record ages from 1548.0 +/- 8.8 Ma to 299.5 +/- 0.6 Ma. The only plausible sources for these grains are the temporally associated Elysium and Tharsis volcanic provinces that are the expressions of deep-seated mantle plumes. The chondritic-like Hf-isotope compositions of these zircons require the existence of a primitive and convecting mantle reservoir, indicating that Mars has been in a stagnant-lid tectonic regime for most of its history. Our results imply that zircon is ubiquitous on the Martian surface, providing a faithful record of the planet's magmatic history.

KW - Mars

KW - meteorites

KW - zircon

KW - geodynamics

KW - MARTIAN MANTLE

KW - MAGMA OCEAN

KW - HISTORY

KW - ORIGIN

KW - CRUST

KW - SYSTEMATICS

KW - CONVECTION

KW - MINERALOGY

KW - AGE

U2 - 10.1073/pnas.2016326117

DO - 10.1073/pnas.2016326117

M3 - Journal article

C2 - 33199613

VL - 117

SP - 30973

EP - 30979

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 49

ER -

ID: 255735189