Fe-rich X-ray amorphous material records past climate and persistence of water on Mars

Autor: Anthony D. Feldman, Elisabeth M. Hausrath, Elizabeth B. Rampe, Valerie Tu, Tanya S. Peretyazhko, Christopher DeFelice, Thomas Sharp

Publikováno v: Communications Earth & Environment, Vol 5, Iss 1, Pp 1-15 (2024)

Abstract X-ray amorphous material comprises 15-73 wt.% of sedimentary rocks and eolian sediments in Gale crater. This material is variably siliceous and iron rich but aluminum poor. The presence of volatiles is consistent with the existence of incipi

Externí odkaz: https://doaj.org/article/e85b16ae4daa4a2bb55a7b7ca645063f

Reconstruction of pH, redox condition, and concentrations of major components in ancient liquid water from the Karasburg member, Murray formation, Gale Crater, Mars

Autor: Keisuke Fukushi, Yasuhito Sekine, Elizabeth B. Rampe

Publikováno v: Geochimica et Cosmochimica Acta. 325:129-151

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::03eb925a61daba816432cab00bc5e7cf
https://doi.org/10.1016/j.gca.2022.02.005

An Insight Into Ancient Aeolian Processes and Post‐Noachian Aqueous Alteration in Gale Crater, Mars, Using ChemCam Geochemical Data From the Greenheugh Capping Unit

Autor: Candice C. Bedford, Steven G. Banham, John C. Bridges, Olivier Forni, Agnes Cousin, Donald Bowden, Stuart M. R. Turner, Roger C. Wiens, Patrick J. Gasda, Jens Frydenvang, Olivier Gasnault, Kristin Rammelkamp, Frances Rivera‐Hernandez, Elizabeth B. Rampe, Rebecca Smith, Cherie Achilles, Erwin Dehouck, Alexander B. Bryk, Susanne P. Schwenzer, Horton Newsom

Publikováno v: Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, 2022, 127 (9), pp.e2021JE007100. ⟨10.1029/2021JE007100⟩
Bedford, C C, Banham, S G, Bridges, J C, Forni, O, Cousin, A, Bowden, D, Turner, S M R, Wiens, R C, Gasda, P J, Frydenvang, J, Gasnault, O, Rammelkamp, K, Rivera-Hernandez, F, Rampe, E B, Smith, R, Achilles, C, Dehouck, E, Bryk, A B, Schwenzer, S P & Newsom, H 2022, ' An Insight Into Ancient Aeolian Processes and Post-Noachian Aqueous Alteration in Gale Crater, Mars, Using ChemCam Geochemical Data From the Greenheugh Capping Unit ', Journal of Geophysical Research-Planets, vol. 127, no. 9, e2021JE007100 . https://doi.org/10.1029/2021JE007100

International audience; Aeolian processes have shaped and contributed to the geological record in Gale crater, Mars, long after the fluviolacustrine system existed ∼3 Ga ago. Understanding these aeolian deposits, particularly those which have been

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fb21055495b6a23d4ae24f12394a7d9
https://doi.org/10.1029/2021je007100

Spectroscopic analysis of allophane and imogolite samples with variable Fe abundance for characterizing the poorly crystalline components on Mars

Autor: Janice L. Bishop, Elizabeth B. Rampe, Zaenal Abidin, T. J. Jeute, Leslie L. Baker

Publikováno v: American Mineralogist. 106:527-540

Nanophase materials including silicates, aluminosilicates, and iron oxides are widespread on Mars. These minerals are important because they likely represent a solid-phase record of ancient climatic conditions on the martian surface. Identification a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a6b6bb9260fa84fedc848d05c5bd26bb
https://doi.org/10.2138/am-2020-7329

Quantification of amorphous Si, Al, and Fe in palagonitic Mars analogs by chemical extraction and X-ray spectroscopy

Autor: Aditi Pandey, Elizabeth B. Rampe, Douglas W. Ming, Youjun Deng, Candice C. Bedford, Paul Schwab

Publikováno v: Icarus. 392:115362

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05a1af7af98d493363b27918b73326b9
https://doi.org/10.1016/j.icarus.2022.115362