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  • Extraterrestrial Environment  (7)
  • Cocoa  (2)
  • 1
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    Wind-related processes detected by the Spirit Rover at Gusev Crater, Mars (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: Wind-abraded rocks, ripples, drifts, and other deposits of windblown sediments are seen at the Columbia Memorial Station where the Spirit rover landed. Orientations of these features suggest formative winds from the north-northwest, consistent with predictions from atmospheric models of afternoon winds in Gusev Crater. Cuttings from the rover Rock Abrasion Tool are asymmetrically distributed toward the south-southeast, suggesting active winds from the north-northwest at the time (midday) of the abrasion operations. Characteristics of some rocks, such as a two-toned appearance, suggest that they were possibly buried and exhumed on the order of 5 to 60 centimeters by wind deflation, depending on location.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Greeley, R -- Squyres, S W -- Arvidson, R E -- Bartlett, P -- Bell, J F 3rd -- Blaney, D -- Cabrol, N A -- Farmer, J -- Farrand, B -- Golombek, M P -- Gorevan, S P -- Grant, J A -- Haldemann, A F C -- Herkenhoff, K E -- Johnson, J -- Landis, G -- Madsen, M B -- McLennan, S M -- Moersch, J -- Rice, J W Jr -- Richter, L -- Ruff, S -- Sullivan, R J -- Thompson, S D -- Wang, A -- Weitz, C M -- Whelley, P -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):810-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Geological Sciences, Arizona State University, Box 871404, Tempe, AZ 85287-1404, USA. Greeley@asu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297660" target="_blank"〉PubMed〈/a〉
    Keywords: Evolution, Planetary ; Extraterrestrial Environment ; *Mars ; Wind
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Surficial deposits at Gusev Crater along Spirit Rover traverses (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: The Mars Exploration Rover Spirit has traversed a fairly flat, rock-strewn terrain whose surface is shaped primarily by impact events, although some of the landscape has been altered by eolian processes. Impacts ejected basaltic rocks that probably were part of locally formed lava flows from at least 10 meters depth. Some rocks have been textured and/or partially buried by windblown sediments less than 2 millimeters in diameter that concentrate within shallow, partially filled, circular impact depressions referred to as hollows. The terrain traversed during the 90-sol (martian solar day) nominal mission shows no evidence for an ancient lake in Gusev crater.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grant, J A -- Arvidson, R -- Bell, J F 3rd -- Cabrol, N A -- Carr, M H -- Christensen, P -- Crumpler, L -- Des Marais, D J -- Ehlmann, B L -- Farmer, J -- Golombek, M -- Grant, F D -- Greeley, R -- Herkenhoff, K -- Li, R -- McSween, H Y -- Ming, D W -- Moersch, J -- Rice, J W Jr -- Ruff, S -- Richter, L -- Squyres, S -- Sullivan, R -- Weitz, C -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):807-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Washington, DC 20560, USA. grantj@nasm.si.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297659" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; Geologic Sediments ; *Mars ; Minerals ; Silicates ; Volcanic Eruptions ; Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    The Opportunity Rover's Athena science investigation at Meridiani Planum, Mars (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-04
    Description: 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 lag 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 siliciclastic 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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Squyres, S W -- Arvidson, R E -- Bell, J F 3rd -- Bruckner, J -- Cabrol, N A -- Calvin, W -- Carr, M H -- Christensen, P R -- Clark, B C -- Crumpler, L -- Marais, D J Des -- d'Uston, C -- Economou, T -- Farmer, J -- Farrand, W -- Folkner, W -- Golombek, M -- Gorevan, S -- Grant, J A -- Greeley, R -- Grotzinger, J -- Haskin, L -- Herkenhoff, K E -- Hviid, S -- Johnson, J -- Klingelhofer, G -- Knoll, A H -- Landis, G -- Lemmon, M -- Li, R -- Madsen, M B -- Malin, M C -- McLennan, S M -- McSween, H Y -- Ming, D W -- Moersch, J -- Morris, R V -- Parker, T -- Rice, J W Jr -- Richter, L -- Rieder, R -- Sims, M -- Smith, M -- Smith, P -- Soderblom, L A -- Sullivan, R -- Wanke, H -- Wdowiak, T -- Wolff, M -- Yen, A -- New York, N.Y. -- Science. 2004 Dec 3;306(5702):1698-703.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA. squyres@astro.cornell.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15576602" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Evolution, Planetary ; Extraterrestrial Environment ; Ferric Compounds ; Geologic Sediments ; *Mars ; Minerals ; Silicates ; Spacecraft ; Water ; Wind
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Localization and physical properties experiments conducted by Spirit at Gusev Crater (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: The precise location and relative elevation of Spirit during its traverses from the Columbia Memorial station to Bonneville crater were determined with bundle-adjusted retrievals from rover wheel turns, suspension and tilt angles, and overlapping images. Physical properties experiments show a decrease of 0.2% per Mars solar day in solar cell output resulting from deposition of airborne dust, cohesive soil-like deposits in plains and hollows, bright and dark rock coatings, and relatively weak volcanic rocks of basaltic composition. Volcanic, impact, aeolian, and water-related processes produced the encountered landforms and materials.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arvidson, R E -- Anderson, R C -- Bartlett, P -- Bell, J F 3rd -- Blaney, D -- Christensen, P R -- Chu, P -- Crumpler, L -- Davis, K -- Ehlmann, B L -- Fergason, R -- Golombek, M P -- Gorevan, S -- Grant, J A -- Greeley, R -- Guinness, E A -- Haldemann, A F C -- Herkenhoff, K -- Johnson, J -- Landis, G -- Li, R -- Lindemann, R -- McSween, H -- Ming, D W -- Myrick, T -- Richter, L -- Seelos, F P 4th -- Squyres, S W -- Sullivan, R J -- Wang, A -- Wilson, J -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):821-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297662" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; Geologic Sediments ; *Mars ; Volcanic Eruptions ; Water ; Wind
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Pancam multispectral imaging results from the Spirit Rover at Gusev Crater (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: Panoramic Camera images at Gusev crater reveal a rock-strewn surface interspersed with high- to moderate-albedo fine-grained deposits occurring in part as drifts or in small circular swales or hollows. Optically thick coatings of fine-grained ferric iron-rich dust dominate most bright soil and rock surfaces. Spectra of some darker rock surfaces and rock regions exposed by brushing or grinding show near-infrared spectral signatures consistent with the presence of mafic silicates such as pyroxene or olivine. Atmospheric observations show a steady decline in dust opacity during the mission, and astronomical observations captured solar transits by the martian moons, Phobos and Deimos, as well as a view of Earth from the martian surface.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, J F 3rd -- Squyres, S W -- Arvidson, R E -- Arneson, H M -- Bass, D -- Blaney, D -- Cabrol, N -- Calvin, W -- Farmer, J -- Farrand, W H -- Goetz, W -- Golombek, M -- Grant, J A -- Greeley, R -- Guinness, E -- Hayes, A G -- Hubbard, M Y H -- Herkenhoff, K E -- Johnson, M J -- Johnson, J R -- Joseph, J -- Kinch, K M -- Lemmon, M T -- Li, R -- Madsen, M B -- Maki, J N -- Malin, M -- McCartney, E -- McLennan, S -- McSween, H Y Jr -- Ming, D W -- Moersch, J E -- Morris, R V -- Dobrea, E Z Noe -- Parker, T J -- Proton, J -- Rice, J W Jr -- Seelos, F -- Soderblom, J -- Soderblom, L A -- Sohl-Dickstein, J N -- Sullivan, R J -- Wolff, M J -- Wang, A -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):800-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cornell University, Ithaca, NY 14853-6801, USA. jfb8@cornell.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297658" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Evolution, Planetary ; Extraterrestrial Environment ; Ferric Compounds ; Geologic Sediments ; Iron Compounds ; *Mars ; Minerals ; Silicates ; Solar System ; Spectrum Analysis ; Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    The Spirit Rover's Athena science investigation at Gusev Crater, Mars (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-08-07
    Description: The Mars Exploration Rover Spirit and its Athena science payload have been used to investigate a landing site in Gusev crater. Gusev is hypothesized to be the site of a former lake, but no clear evidence for lacustrine sedimentation has been found to date. Instead, the dominant lithology is basalt, and the dominant geologic processes are impact events and eolian transport. Many rocks exhibit coatings and other characteristics that may be evidence for minor aqueous alteration. Any lacustrine sediments that may exist at this location within Gusev apparently have been buried by lavas that have undergone subsequent impact disruption.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Squyres, S W -- Arvidson, R E -- Bell, J F 3rd -- Bruckner, J -- Cabrol, N A -- Calvin, W -- Carr, M H -- Christensen, P R -- Clark, B C -- Crumpler, L -- Des Marais, D J -- D'Uston, C -- Economou, T -- Farmer, J -- Farrand, W -- Folkner, W -- Golombek, M -- Gorevan, S -- Grant, J A -- Greeley, R -- Grotzinger, J -- Haskin, L -- Herkenhoff, K E -- Hviid, S -- Johnson, J -- Klingelhofer, G -- Knoll, A -- Landis, G -- Lemmon, M -- Li, R -- Madsen, M B -- Malin, M C -- McLennan, S M -- McSween, H Y -- Ming, D W -- Moersch, J -- Morris, R V -- Parker, T -- Rice, J W Jr -- Richter, L -- Rieder, R -- Sims, M -- Smith, M -- Smith, P -- Soderblom, L A -- Sullivan, R -- Wanke, H -- Wdowiak, T -- Wolff, M -- Yen, A -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):794-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Astronomy, Cornell University, Ithaca, NY 14853, USA. squyres@astro.cornell.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297657" target="_blank"〉PubMed〈/a〉
    Keywords: Atmosphere ; Extraterrestrial Environment ; Geologic Sediments ; Geological Phenomena ; Geology ; Magnetics ; *Mars ; Minerals ; Water ; Wind
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    A closer look at water-related geologic activity on Mars (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-22
    Description: Water has supposedly marked the surface of Mars and produced characteristic landforms. To understand the history of water on Mars, we take a close look at key locations with the High-Resolution Imaging Science Experiment on board the Mars Reconnaissance Orbiter, reaching fine spatial scales of 25 to 32 centimeters per pixel. Boulders ranging up to approximately 2 meters in diameter are ubiquitous in the middle to high latitudes, which include deposits previously interpreted as finegrained ocean sediments or dusty snow. Bright gully deposits identify six locations with very recent activity, but these lie on steep (20 degrees to 35 degrees) slopes where dry mass wasting could occur. Thus, we cannot confirm the reality of ancient oceans or water in active gullies but do see evidence of fluvial modification of geologically recent mid-latitude gullies and equatorial impact craters.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McEwen, A S -- Hansen, C J -- Delamere, W A -- Eliason, E M -- Herkenhoff, K E -- Keszthelyi, L -- Gulick, V C -- Kirk, R L -- Mellon, M T -- Grant, J A -- Thomas, N -- Weitz, C M -- Squyres, S W -- Bridges, N T -- Murchie, S L -- Seelos, F -- Seelos, K -- Okubo, C H -- Milazzo, M P -- Tornabene, L L -- Jaeger, W L -- Byrne, S -- Russell, P S -- Griffes, J L -- Martinez-Alonso, S -- Davatzes, A -- Chuang, F C -- Thomson, B J -- Fishbaugh, K E -- Dundas, C M -- Kolb, K J -- Banks, M E -- Wray, J J -- New York, N.Y. -- Science. 2007 Sep 21;317(5845):1706-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA. mcewen@lpl.arizona.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17885125" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; Geological Phenomena ; Geology ; *Mars ; *Water
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Electronic Resource
    Electronic Resource
    Prediction of chocolate quality from near-infrared spectroscopic measurements of the raw cocoa beans
    Amsterdam : Elsevier
    Vibrational Spectroscopy 2 (1991), S. 161-172 
    Details
    ISSN: 0924-2031
    Keywords: Chocolate ; Cocoa ; Infrared spectrometry ; Sensory panel
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0924-2031(91)85022-F
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  • 9
    Electronic Resource
    Electronic Resource
    Prediction of chocolate quality from near-infrared spectroscopic measurements of the raw cocoa beans
    Amsterdam : Elsevier
    Analytica Chimica Acta 253 (1991), S. 161-172 
    Details
    ISSN: 0003-2670
    Keywords: Chocolate ; Cocoa ; Infrared spectrometry ; Sensory panel
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0003-2670(91)87171-3
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