Exploring Potential Source Materials for Martian Slope Phenomena
Uncover the research on subsurface hydrous chlorides and oxychlorine salts as potential sources for recurring slope lineae on Mars. The document includes stability fields of hydrous Mg-sulfates and Fe-sulfates, along with experimental data on EH buffers. References to Raman spectroscopic studies and phase transition pathways of magnesium sulfates on Mars are provided, shedding light on the composition and behavior of these materials.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
Supporting document for The Potential Source Materials for Recurring Slope Lineae on Mars: Subsurface Hydrous Chlorides and Oxychlorine Salts (HyCOS) Authors: Alian Wang1, Zongcheng Ling2, Y. C. Yan1, Alfred S. McEwen3, Michael T. Mellon4, Michael D. Smith5, Bradley L. Jolliff1, James Head6 Affiliations: 1Dept. Earth and Planetary Sciences and McDonnell Center for Space Sciences, Washington University in St. Louis, St. Louis, Missouri, 63130, USA; 2Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, 264209, China; 3Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona, 85721, USA; 4Applied Physics Laboratory, Johns Hopkins University, Laurel, Maryland, 20723, USA 5NASA Goddard Space Flight Center, Greenbelt, Maryland, 20771, USA 6Dept. Earth, Environmental and Planetary Sciences, Brown University, Rhode Island, 02912, USA; This document contains: Figure S1. Stability field and phase boundaries of hydrous Mg-sulfates Figure S2. Stability field and phase boundaries of hydrous Fe3+-sulfates Figure S1. Stability field and phase boundaries of hydrous Fe2+-sulfates Table S1. RHbuffer (T) of ten EH buffers used in experiment #1
brine Figure S1. Stability fields and phase boundaries of hydrous Mg-sulfates 1,2,3 Notice the 7w-deliquescence boundary intersects with 273K isothermal line at about 95%RH. Am=amorphousMgSO4 xH2O (x<3), LH-1w=Low Humidity MgSO4 H2O; 4w=MgSO4 4H2O, 6w=MgSO4 6H2O, 7w=MgSO4 7H2O, LT- 7w=low temperature MgSO4 7H2O , 11w=MgSO4 11H2O, deliq=deliquescence, meta=metastable.
brine Figure S2. Stability fields and phase boundaries of hydrous Fe3+ -sulfates 4,5,6,7, Notice the 20W-deliquescence boundary intersects with 273K isothermal line at about 75 %RH. 4w=FeHSO4 4H2O, 5w=Fe2(SO4)3.5H2O, 7w=Fe2(SO4)3.7H2O, p9w=paracoquimbite =Fe2(SO4)3.9H2O, 20w=Fe4.67(SO4)6(OH)2.20H2O, Am=amorphous Fe2(SO4)3.5H2O, deliq=deliquescence.
Chou et al., 2002 10 brine Figure S3. Stability fields and phase boundaries of hydrous Fe2+ -sulfates 8,9 Notice the 7w-deliquescence boundary intersects with 273K isothermal line at about 96%RH. 1w=FeSO4 H2O; deliq=deliquescence.
Table S1. RHbuffer (T) of ten EH buffers used in experiment #1 323K 5.5 11.3 30.5 45.4 51.5 64.5 74.4 81.2 84.8 100 294K 6.6 11.3 33.0 54.1 58.8 70.0 75.4 85.0 94.4 100.0 278K 7.4 11.3 33.6 58.9 63.5 73.3 75.7 87.7 96.3 100.0 RH (%) * LiBr LiCl MgCl2 Mg(NO3)2 NaBr KI NaCl KCl KNO3 H2O *Data from Greenspan 197711.
References cited in supporting document: 1. Wang Alian, Freeman J. F., Jolliff B. L., Chou I. M, (2006) Sulfates on Mars: a Systematic Raman Spectroscopic Study of Hydration States of Magnesium Sulfates, Geochim. Cosmochim. Acta, V70, p6118-6135. 2. Wang Alian, John J. Freeman, Bradley, L. Jolliff (2009), Phase Transition Pathways of the Hydrates of Magnesium Sulfate in the Temperature Range 50 C to 5 C: Implication for Sulfates on Mars, J. Geophys. Res., 114, doi:10.1029/2008JE003266. 3. Wang Alian, J. J. Freeman, I-Ming Chou, B. L. Jolliff (2011), Stability of Mg-sulfates at - 10 C and the Rates of Dehydration/Rehydration Processes under Mars Relevant Conditions, J. Geophys. Res., Res., 116, E12006, doi:10.1029/2011JE003818. 4. Wang Alian, Ling Z. C. Freeman J. J. (2012) Stability field and Phase Transition Pathways of Hydrous Ferric Sulfates in the Temperature Range 50 C to 5 C: Implication for Martian Sulfates, Icaru, 218, 622-643, doi:10.1016/j.icarus.2012.01.003. 5. Kong, W. G., Alian Wang, and I-M. Chou (2011), Determination of phase boundary between kornelite and pentahydrated Ferric Sulfate by humidity buffer technique and Raman spectroscopy at 0.1 Mpa. Chemical Geology, Vol 284, 333-338. Kong W. G., Alian Wang, John J. Freeman, and Pablo Sobron(2011),A Comprehensive Spectroscopic Study of Synthetic Fe2+, Fe3+, Mg2+, Al3+ Copiapite, J. Raman Spectroscopy, doi10.1002/jrs.2790. 6. Ling Z. C., Alian Wang (2010),A Systematic Spectroscopic Study of Eight Hydrous Ferric Sulfates Relevant to Mars, Icarus, 209, 422-433, doi:/10.1016/j.icarus.2010.05.009. 7. 8. Alian Wang and Kathryn Connor, 2014, Stability fields of hydrous ferrous sulfates and their pathways in dehydration-rehydration processes, Abs #1070 for 8th International Conference on Mars 9. Wang Alian, Yuhang Zhou (2014)Experimental Comparison of the Pathways and Rates of the Dehydration of Al-, Fe-, Mg-, and Ca-Sulfates under Mars Relevant Conditions, ICARUS, 234, 162-173. 10. Chou I.M., R. R. Seal II, B. S. Hemingway, Determination of melanterite-rozenite and Chalcanthite-bonattite equilibria by humidity measurements at 0.1 Mpa, Am. Mineralogists, V87, p108-114. 11. Greenspan, L. Humidity fixed points of binary saturated aqueous solution. J. Res. Natl. Bureau of Standards A. Phys. Chem. 81A (1), 89 96 (1977).
