GRS evidence and the possibility of paleooceans on Mars

James M. Dohm; Victor R. Baker; William V. Boynton; Alberto G. Fairén; Justin C. Ferris; Michael Finch; Roberto Furfaro; Trent M. Hare; Daniel M. Janes; Jeffrey S. Kargel; Suniti Karunatillake; John Keller; Kris Kerry; Kyeong J. Kim; Goro Komatsu; William C. Mahaney; Dirk Schulze-Makuch; Lucia Marinangeli; Gian G. Ori; Javier Ruiz; Shawn J. Wheelock

doi:10.1016/j.pss.2008.10.008

GRS evidence and the possibility of paleooceans on Mars

James M. Dohm, Victor R. Baker, William V. Boynton, Alberto G. Fairén, Justin C. Ferris, Michael Finch, Roberto Furfaro, Trent M. Hare, Daniel M. Janes, Jeffrey S. Kargel, Suniti Karunatillake, John Keller, Kris Kerry, Kyeong J. Kim, Goro Komatsu, William C. Mahaney, Dirk Schulze-Makuch, Lucia Marinangeli, Gian G. Ori, Javier RuizShawn J. Wheelock

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

70 Scopus citations

Abstract

The Gamma Ray Spectrometer (Mars Odyssey spacecraft) has revealed elemental distributions of potassium (K), thorium (Th), and iron (Fe) on Mars that require fractionation of K (and possibly Th and Fe) consistent with aqueous activity. This includes weathering, evolution of soils, and transport, sorting, and deposition, as well as with the location of first-order geomorphological demarcations identified as possible paleoocean boundaries. The element abundances occur in patterns consistent with weathering in situ and possible presence of relict or exhumed paleosols, deposition of weathered materials (salts and clastic minerals), and weathering/transport under neutral to acidic brines. The abundances are explained by hydrogeology consistent with the possibly overlapping alternatives of paleooceans and/or heterogeneous rock compositions from diverse provenances (e.g., differing igneous compositions).

Original language	English (US)
Pages (from-to)	664-684
Number of pages	21
Journal	Planetary and Space Science
Volume	57
Issue number	5-6
DOIs	https://doi.org/10.1016/j.pss.2008.10.008
State	Published - May 2009

Keywords

Elemental
Gamma-ray spectrometer
Hydrogeology
Mars
Oceans
Water

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1016/j.pss.2008.10.008

Cite this

Dohm, J. M., Baker, V. R., Boynton, W. V., Fairén, A. G., Ferris, J. C., Finch, M., Furfaro, R., Hare, T. M., Janes, D. M., Kargel, J. S., Karunatillake, S., Keller, J., Kerry, K., Kim, K. J., Komatsu, G., Mahaney, W. C., Schulze-Makuch, D., Marinangeli, L., Ori, G. G., ... Wheelock, S. J. (2009). GRS evidence and the possibility of paleooceans on Mars. Planetary and Space Science, 57(5-6), 664-684. https://doi.org/10.1016/j.pss.2008.10.008

Dohm, JM, Baker, VR, Boynton, WV, Fairén, AG, Ferris, JC, Finch, M, Furfaro, R, Hare, TM, Janes, DM, Kargel, JS, Karunatillake, S, Keller, J, Kerry, K, Kim, KJ, Komatsu, G, Mahaney, WC, Schulze-Makuch, D, Marinangeli, L, Ori, GG, Ruiz, J & Wheelock, SJ 2009, 'GRS evidence and the possibility of paleooceans on Mars', Planetary and Space Science, vol. 57, no. 5-6, pp. 664-684. https://doi.org/10.1016/j.pss.2008.10.008

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abstract = "The Gamma Ray Spectrometer (Mars Odyssey spacecraft) has revealed elemental distributions of potassium (K), thorium (Th), and iron (Fe) on Mars that require fractionation of K (and possibly Th and Fe) consistent with aqueous activity. This includes weathering, evolution of soils, and transport, sorting, and deposition, as well as with the location of first-order geomorphological demarcations identified as possible paleoocean boundaries. The element abundances occur in patterns consistent with weathering in situ and possible presence of relict or exhumed paleosols, deposition of weathered materials (salts and clastic minerals), and weathering/transport under neutral to acidic brines. The abundances are explained by hydrogeology consistent with the possibly overlapping alternatives of paleooceans and/or heterogeneous rock compositions from diverse provenances (e.g., differing igneous compositions).",

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AU - Finch, Michael

AU - Furfaro, Roberto

AU - Hare, Trent M.

AU - Janes, Daniel M.

AU - Kargel, Jeffrey S.

AU - Karunatillake, Suniti

AU - Keller, John

AU - Kerry, Kris

AU - Kim, Kyeong J.

AU - Komatsu, Goro

AU - Mahaney, William C.

AU - Schulze-Makuch, Dirk

AU - Marinangeli, Lucia

AU - Ori, Gian G.

AU - Ruiz, Javier

AU - Wheelock, Shawn J.

PY - 2009/5

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N2 - The Gamma Ray Spectrometer (Mars Odyssey spacecraft) has revealed elemental distributions of potassium (K), thorium (Th), and iron (Fe) on Mars that require fractionation of K (and possibly Th and Fe) consistent with aqueous activity. This includes weathering, evolution of soils, and transport, sorting, and deposition, as well as with the location of first-order geomorphological demarcations identified as possible paleoocean boundaries. The element abundances occur in patterns consistent with weathering in situ and possible presence of relict or exhumed paleosols, deposition of weathered materials (salts and clastic minerals), and weathering/transport under neutral to acidic brines. The abundances are explained by hydrogeology consistent with the possibly overlapping alternatives of paleooceans and/or heterogeneous rock compositions from diverse provenances (e.g., differing igneous compositions).

AB - The Gamma Ray Spectrometer (Mars Odyssey spacecraft) has revealed elemental distributions of potassium (K), thorium (Th), and iron (Fe) on Mars that require fractionation of K (and possibly Th and Fe) consistent with aqueous activity. This includes weathering, evolution of soils, and transport, sorting, and deposition, as well as with the location of first-order geomorphological demarcations identified as possible paleoocean boundaries. The element abundances occur in patterns consistent with weathering in situ and possible presence of relict or exhumed paleosols, deposition of weathered materials (salts and clastic minerals), and weathering/transport under neutral to acidic brines. The abundances are explained by hydrogeology consistent with the possibly overlapping alternatives of paleooceans and/or heterogeneous rock compositions from diverse provenances (e.g., differing igneous compositions).

KW - Elemental

KW - Gamma-ray spectrometer

KW - Hydrogeology

KW - Mars

KW - Oceans

KW - Water

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GRS evidence and the possibility of paleooceans on Mars

Abstract

Keywords

ASJC Scopus subject areas

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