Lunar impact basins and crustal heterogeneity: New western limb and far side data fom Galileo

Michael J.S. Belton; James W. Head; Carle M. Pieters; Ronald Greeley; Alfred S. McEwen; Gerhard Neukum; Kenneth P. Klaasen; Clifford D. Anger; Michael H. Carr; Clark R. Chapman; Merton E. Davies; Fraser P. Fanale; Peter J. Gierasch; Richard Greenberg; Andrew P. Ingersoll; Torrence Johnson; Brian Paczkowski; Carl B. Pilcher; Joseph Veverka

doi:10.1126/science.255.5044.570

Lunar impact basins and crustal heterogeneity: New western limb and far side data fom Galileo

Michael J.S. Belton, James W. Head, Carle M. Pieters, Ronald Greeley, Alfred S. McEwen, Gerhard Neukum, Kenneth P. Klaasen, Clifford D. Anger, Michael H. Carr, Clark R. Chapman, Merton E. Davies, Fraser P. Fanale, Peter J. Gierasch, Richard Greenberg, Andrew P. Ingersoll, Torrence Johnson, Brian Paczkowski, Carl B. Pilcher, Joseph Veverka

Planetary Sciences

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62 Scopus citations

Abstract

Multispectral images of the lunar western limb and far side obtained from Galileo reveal the compositional nature of several prominent lunar features and provide new information on lunar evolution. The data reveal that the ejecta from the Orientale impact basin (900 kilometers in diameter) lying outside the Cordillera Mountains was excavated from the crust, not the mantle, and covers pre-Orientale terrain that consisted of both highland materials and relatively large expanses of ancient mare basalts. The inside of the far side South Pole-Aitken basin (>2000 kilometers in diameter) has low albedo, red color, and a relatively high abundance of iron- and magnesium-rich materials. These features suggest that the impact may have penetrated into the deep crust or lunar mantle or that the basin contains ancient mare basalts that were later covered by highlands ejecta.

Original language	English (US)
Pages (from-to)	570-576
Number of pages	7
Journal	Science
Volume	255
Issue number	5044
DOIs	https://doi.org/10.1126/science.255.5044.570
State	Published - 1992

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Belton, M. J. S., Head, J. W., Pieters, C. M., Greeley, R., McEwen, A. S., Neukum, G., Klaasen, K. P., Anger, C. D., Carr, M. H., Chapman, C. R., Davies, M. E., Fanale, F. P., Gierasch, P. J., Greenberg, R., Ingersoll, A. P., Johnson, T., Paczkowski, B., Pilcher, C. B., & Veverka, J. (1992). Lunar impact basins and crustal heterogeneity: New western limb and far side data fom Galileo. Science, 255(5044), 570-576. https://doi.org/10.1126/science.255.5044.570

Belton, MJS, Head, JW, Pieters, CM, Greeley, R, McEwen, AS, Neukum, G, Klaasen, KP, Anger, CD, Carr, MH, Chapman, CR, Davies, ME, Fanale, FP, Gierasch, PJ, Greenberg, R, Ingersoll, AP, Johnson, T, Paczkowski, B, Pilcher, CB & Veverka, J 1992, 'Lunar impact basins and crustal heterogeneity: New western limb and far side data fom Galileo', Science, vol. 255, no. 5044, pp. 570-576. https://doi.org/10.1126/science.255.5044.570

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title = "Lunar impact basins and crustal heterogeneity: New western limb and far side data fom Galileo",

abstract = "Multispectral images of the lunar western limb and far side obtained from Galileo reveal the compositional nature of several prominent lunar features and provide new information on lunar evolution. The data reveal that the ejecta from the Orientale impact basin (900 kilometers in diameter) lying outside the Cordillera Mountains was excavated from the crust, not the mantle, and covers pre-Orientale terrain that consisted of both highland materials and relatively large expanses of ancient mare basalts. The inside of the far side South Pole-Aitken basin (>2000 kilometers in diameter) has low albedo, red color, and a relatively high abundance of iron- and magnesium-rich materials. These features suggest that the impact may have penetrated into the deep crust or lunar mantle or that the basin contains ancient mare basalts that were later covered by highlands ejecta.",

author = "Belton, {Michael J.S.} and Head, {James W.} and Pieters, {Carle M.} and Ronald Greeley and McEwen, {Alfred S.} and Gerhard Neukum and Klaasen, {Kenneth P.} and Anger, {Clifford D.} and Carr, {Michael H.} and Chapman, {Clark R.} and Davies, {Merton E.} and Fanale, {Fraser P.} and Gierasch, {Peter J.} and Richard Greenberg and Ingersoll, {Andrew P.} and Torrence Johnson and Brian Paczkowski and Pilcher, {Carl B.} and Joseph Veverka",

year = "1992",

doi = "10.1126/science.255.5044.570",

language = "English (US)",

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AU - Belton, Michael J.S.

AU - Head, James W.

AU - Pieters, Carle M.

AU - Greeley, Ronald

AU - McEwen, Alfred S.

AU - Neukum, Gerhard

AU - Klaasen, Kenneth P.

AU - Anger, Clifford D.

AU - Carr, Michael H.

AU - Chapman, Clark R.

AU - Davies, Merton E.

AU - Fanale, Fraser P.

AU - Gierasch, Peter J.

AU - Greenberg, Richard

AU - Ingersoll, Andrew P.

AU - Johnson, Torrence

AU - Paczkowski, Brian

AU - Pilcher, Carl B.

AU - Veverka, Joseph

PY - 1992

Y1 - 1992

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AB - Multispectral images of the lunar western limb and far side obtained from Galileo reveal the compositional nature of several prominent lunar features and provide new information on lunar evolution. The data reveal that the ejecta from the Orientale impact basin (900 kilometers in diameter) lying outside the Cordillera Mountains was excavated from the crust, not the mantle, and covers pre-Orientale terrain that consisted of both highland materials and relatively large expanses of ancient mare basalts. The inside of the far side South Pole-Aitken basin (>2000 kilometers in diameter) has low albedo, red color, and a relatively high abundance of iron- and magnesium-rich materials. These features suggest that the impact may have penetrated into the deep crust or lunar mantle or that the basin contains ancient mare basalts that were later covered by highlands ejecta.

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Lunar impact basins and crustal heterogeneity: New western limb and far side data fom Galileo

Abstract

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