%0 Journal Article %1 Fanale2000 %A Fanale, F. P. %A Granahan, J. C. %A Greeley, R. %A Pappalardo, R. %A Head, J. %A Shirley, J. %A Carlson, R. %A Hendrix, A. %A Moore, J. %A McCord, T. B. %A Belton, M. %D 2000 %J Journal of Geophysical Research-Planets %K imported %N E9 %P 22647--22655 %T Tyre and Pwyll: Galileo orbital remote sensing of mineralogy versus morphology at two selected sites on Europa %V 105 %X Observational data from the Galileo Orbiter's remote-sensing instruments, including solid-state imaging (SSI), the Near-Infrared Mapping Spectrometer (NIMS), and the ultraviolet spectrometer (UVS), are analyzed and interpreted in terms of the history of the Tyre and Pwyll impact sites and the nature of Europa's crustal zonal structure. Material characterized by asymmetric 1.4 and 2.0 mu m bands and visible coloration characterizes each site where morphologic evidence suggests disruption of the topmost crust, The material is not H2O ice, is endogenic, and is common to the linea, impact basins, and dark trailing side terrain. Differences between Tyre and Pwyll are interpreted in terms of Europa's peculiar energy history, while other evidence may suggest flooding of the endogenic material as a liquid. The pure ice appearance of most of Europa's crust is probably superficial, while beneath a thin patina of sputtered H2O molecules the crust is everywhere laced with numerous generations of intrusions and extrusions of an aqueous phase. Our results, together with numerous laboratory experiments and theoretical analysis, suggest that the aqueous phase is dominated by the SO4= anion.

@article{Fanale2000, abstract = {Observational data from the Galileo Orbiter's remote-sensing instruments, including solid-state imaging (SSI), the Near-Infrared Mapping Spectrometer (NIMS), and the ultraviolet spectrometer (UVS), are analyzed and interpreted in terms of the history of the Tyre and Pwyll impact sites and the nature of Europa's crustal zonal structure. Material characterized by asymmetric 1.4 and 2.0 mu m bands and visible coloration characterizes each site where morphologic evidence suggests disruption of the topmost crust, The material is not H2O ice, is endogenic, and is common to the linea, impact basins, and dark trailing side terrain. Differences between Tyre and Pwyll are interpreted in terms of Europa's peculiar energy history, while other evidence may suggest flooding of the endogenic material as a liquid. The pure ice appearance of most of Europa's crust is probably superficial, while beneath a thin patina of sputtered H2O molecules the crust is everywhere laced with numerous generations of intrusions and extrusions of an aqueous phase. Our results, together with numerous laboratory experiments and theoretical analysis, suggest that the aqueous phase is dominated by the SO4= anion.}, added-at = {2009-11-03T20:21:25.000+0100}, author = {Fanale, F. P. and Granahan, J. C. and Greeley, R. and Pappalardo, R. and Head, J. and Shirley, J. and Carlson, R. and Hendrix, A. and Moore, J. and McCord, T. B. and Belton, M.}, biburl = {https://www.bibsonomy.org/bibtex/26e4281609e4005a2ca8aff1feab482ef/svance}, citedreferences = {CARLSON R, 1996, Science, V274, P385 ; CARLSON RW, 1999, Science, V286, P97 ; CLARK BE, 1998, Icarus, V135, P95 ; CLARK RN, 1981, J GEOPHYS RES, V86, P3074 ; CLARK RN, 1981, J GEOPHYS RES, V86, P3087 ; DALTON JB, 1998, B AM ASTRON SOC, V30, P1081 ; FANALE FP, 1974, Science, V186, P922 ; FANALE FP, 1977, PLANETARY SATELLITES, P379 ; FANALE FP, 1982, SATELLITES JUPITER, P756 ; FANALE FP, 1998, LUNAR PLANET, V29 ; FANALE FP, 1999, Icarus, V139, P179 ; GEISSLER PE, 1998, Icarus, V135, P107 ; GRANAHAN J, 1998, B AM ASTRON SOC, V30, P1084 ; GRANAHAN JC, 1997, B AM ASTRON SOC, V29, P982 ; GRANAHAN JC, 1997, P LUN PLAN SCI C 28, P449 ; Greeley R, 1998, Icarus, V135, P4 ; Greenberg R, 1998, Icarus, V135, P64 ; HENDRIX AR, 1998, EOS T, V79, F535 ; HENDRIX AR, 1998, Icarus, V135, P79 ; JOHNSON RE, 1990, ENERGETIC CHARGED PA ; KARGEL JS, 1991, Icarus, V94, P368 ; LANE AL, 1981, Nature, V292, P38 ; LUCCHITTA BK, 1982, SATELLITES JUPITER, P521 ; MALIN MC, 1986, SATELLITES, P689 ; MCCORD TB, 1997, EOS T AGU S, V78, F407 ; MCCORD TB, 1998, Science, V280, P1242 ; MCCORD TB, 1999, J GEOPHYS RES-PLANET, V104, P11827 ; MCEWEN AS, 1986, J GEOPHYS RES-SOLID, V91, P8077 ; MOORE JM, 1998, Icarus, V135, P127 ; SPENCER JR, 1995, J GEOPHYS RES-PLANET, V100, P19049}, interhash = {154e15e2ebb026eadc01eda45cd99055}, intrahash = {6e4281609e4005a2ca8aff1feab482ef}, journal = {Journal of Geophysical Research-Planets}, keywords = {imported}, number = {E9}, owner = {svance}, pages = {22647--22655}, timestamp = {2009-11-03T20:21:46.000+0100}, title = {Tyre and Pwyll: Galileo orbital remote sensing of mineralogy versus morphology at two selected sites on Europa}, volume = 105, year = 2000 }