%0 Journal Article %1 Squyres2004a %A Squyres, S. W. %A Arvidson, R. E. %A Bell, J. F. %A Bruckner, J. %A Cabrol, N. A. %A Calvin, W. %A Carr, M. H. %A Christensen, P. R. %A Clark, B. C. %A Crumpter, L. %A Marais, D. J. Des %A d'Uston, C. %A Economou, T. %A Farmer, J. %A Farrand, W. %A Folkner, W. %A Golombek, M. %A Gorevan, S. %A Grant, J. A. %A Greeley, R. %A Grotzinger, J. %A Haskin, L. %A Herkenhoff, K. E. %A Hviid, S. %A Johnson, J. %A Klingelhofer, G. %A Knoll, A. H. %A Landis, G. %A Lemmon, M. %A Li, R. %A Madsen, M. B. %A Malin, M. C. %A McLennan, S. M. %A McSween, H. Y. %A Ming, D. W. %A Moersch, J. %A Morris, R. V. %A Parker, T. %A Rice, J. W. %A Richter, L. %A Rieder, R. %A Sims, M. %A Smith, M. %A Smith, P. %A Soderblom, L. A. %A Sutlivan, R. %A Wanke, H. %A Wdowiak, T. %A Wolff, M. %A Yen, A. %D 2004 %J Science %K imported %N 5702 %P 1698--1703 %T The Opportunity Rover's Athena Science investigation at Meridiani Planum, Mars %V 306 %X The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surface tag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples are common. Underlying the thin soil layer, and exposed within small impact craters and troughs, are flat-lying sedimentary rocks. These rocks are finely laminated, are rich in sulfur, and contain abundant sulfate salts. Small-scale cross-lamination in some locations provides evidence for deposition in flowing liquid water. We interpret the rocks to be a mixture of chemical and silicictastic sediments formed by episodic inundation by shallow surface water, followed by evaporation, exposure, and desiccation. Hematite-rich spherules are embedded in the rock and eroding from them. We interpret these spherules to be concretions formed by postdepositional diagenesis, again involving liquid water.

@article{Squyres2004a, abstract = {The Mars Exploration Rover Opportunity has investigated the landing site in Eagle crater and the nearby plains within Meridiani Planum. The soils consist of fine-grained basaltic sand and a surface tag of hematite-rich spherules, spherule fragments, and other granules. Wind ripples are common. Underlying the thin soil layer, and exposed within small impact craters and troughs, are flat-lying sedimentary rocks. These rocks are finely laminated, are rich in sulfur, and contain abundant sulfate salts. Small-scale cross-lamination in some locations provides evidence for deposition in flowing liquid water. We interpret the rocks to be a mixture of chemical and silicictastic sediments formed by episodic inundation by shallow surface water, followed by evaporation, exposure, and desiccation. Hematite-rich spherules are embedded in the rock and eroding from them. We interpret these spherules to be concretions formed by postdepositional diagenesis, again involving liquid water.}, added-at = {2009-11-03T20:21:25.000+0100}, author = {Squyres, S. W. and Arvidson, R. E. and Bell, J. F. and Bruckner, J. and Cabrol, N. A. and Calvin, W. and Carr, M. H. and Christensen, P. R. and Clark, B. C. and Crumpter, L. and Marais, D. J. Des and d'Uston, C. and Economou, T. and Farmer, J. and Farrand, W. and Folkner, W. and Golombek, M. and Gorevan, S. and Grant, J. A. and Greeley, R. and Grotzinger, J. and Haskin, L. and Herkenhoff, K. E. and Hviid, S. and Johnson, J. and Klingelhofer, G. and Knoll, A. H. and Landis, G. and Lemmon, M. and Li, R. and Madsen, M. B. and Malin, M. C. and McLennan, S. M. and McSween, H. Y. and Ming, D. W. and Moersch, J. and Morris, R. V. and Parker, T. and Rice, J. W. and Richter, L. and Rieder, R. and Sims, M. and Smith, M. and Smith, P. and Soderblom, L. A. and Sutlivan, R. and Wanke, H. and Wdowiak, T. and Wolff, M. and Yen, A.}, biburl = {https://www.bibsonomy.org/bibtex/2ac6e1ddb8784e23fcea758e34dc8b25d/svance}, citedreferences = {ARVIDSON RE, 2003, J GEOPHYS RES-PLANET, V108 ; ARVIDSON RE, 2004, Science, V306, P1760 ; BANIN A, 1992, MARS, P584 ; BELL JF, 2003, J GEOPHYS RES-PLANET, V108 ; BELL JF, 2004, Science, V306, P1703 ; CHOQUETTE PW, 1970, AAPG BULL, V54, P207 ; CHRISTENSEN PR, 2000, J GEOPHYS RES, V105, P9632 ; CHRISTENSEN PR, 2001, J GEOPHYS RES, V106, P23 ; CHRISTENSEN PR, 2003, J GEOPHYS RES-PLANET, V108 ; CHRISTENSEN PR, 2004, J GEOPHYS RES-PLANET, V109 ; CHRISTENSEN PR, 2004, Science, V306, P1733 ; CRISP JA, 2003, J GEOPHYS RES-PLANET, V108 ; GOLOMBEK MP, 2003, J GEOPHYS RES-PLANET, V108 ; GOREVAN SP, 2003, J GEOPHYS RES-PLANET, V108 ; HARMS JC, 1982, STRUCTURES SEQUENCES ; HERKENHOFF KE, 2003, J GEOPHYS RES-PLANET, V108 ; HERKENHOFF KE, 2004, Science, V306, P1727 ; HYNEK BM, 2001, Geology, V29, P407 ; HYNEK BM, 2002, J GEOPHYS RES-PLANET, V107 ; KLINGELHOFER G, 2003, J GEOPHYS RES-PLANET, V108 ; KLINGELHOFER G, 2004, Science, V306, P1740 ; LEMMON MT, 2004, Science, V306, P1753 ; MADSEN MB, 2003, J GEOPHYS RES-PLANET, V108 ; MAKI JN, 2003, J GEOPHYS RES-PLANET, V108 ; MIDDLETON GV, 1984, MECH SEDIMENT MOVEME ; RIEDER R, 2003, J GEOPHYS RES-PLANET, V108 ; RIEDER R, 2004, Science, V306, P1746 ; SMITH MD, 2004, Icarus, V167, P148 ; SMITH MD, 2004, Science, V306, P1750 ; SODERBLOM LA, 2004, Science, V306, P1723 ; SOUTHARD JB, 1990, J SEDIMENT PETROL, V66, P680 ; Squyres SW, 2003, J GEOPHYS RES-PLANET, V108 ; Squyres SW, 2004, Science, V305, P794 ; Squyres SW, 2004, Science, V306, P1709}, interhash = {ffa9e38978f81321981f6589c317f7b2}, intrahash = {ac6e1ddb8784e23fcea758e34dc8b25d}, journal = {Science}, keywords = {imported}, number = 5702, owner = {svance}, pages = {1698--1703}, timestamp = {2009-11-03T20:22:15.000+0100}, title = {The Opportunity Rover's Athena Science investigation at Meridiani Planum, Mars}, volume = 306, year = 2004 }