Formation of Central Pits in Impact Craters on Mars: A Statistical Investigation of Proposed Mechanisms

Autor: Liem Tran, Devon M. Burr, S. E. Peel

Publikováno v: Journal of Geophysical Research: Planets. 124:437-453

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cbfcca48d4f5cef86819b1c780ce8944
https://doi.org/10.1029/2018je005738

Use of multivariate analysis for synchrotron micro-XANES analysis of iron valence state in amphiboles

Autor: M. Darby Dyar, Mickey E. Gunter, Jordan Tucker, CJ Carey, Elizabeth B. Brown, Jeremy S. Delaney, E. A. Breves, Mirna Lerotic, Roberta Oberti, S. E. Peel, Antonio Lanzirotti

Publikováno v: The American mineralogist 101 (2016): 1171–1189. doi:10.2138/am-2016-5556
info:cnr-pdr/source/autori:M. Darby Dyar1,*, Elly A. Breves1, Mickey E. Gunter2, Antonio Lanzirotti3, Jonathan M. Tucker4, C.J. Carey5, Samantha E. Pee l6, Elizabeth B. Brown1, Roberta Oberti7, Mirna Lerotic8, and Jerem y S. Delaney9/titolo:Use of multivariate analysis for synchrotron micro-XANES analysis of iron valence state in amphiboles/doi:10.2138%2Fam-2016-5556/rivista:The American mineralogist/anno:2016/pagina_da:1171/pagina_a:1189/intervallo_pagine:1171–1189/volume:101

Microanalysis of Fe 3+ /∑Fe in geological samples using synchrotron-based X-ray absorption spectroscopy has become routine since the introduction of standards and model compounds. Existing calibrations commonly use least-squares linear combinations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03bd5b611d290112386fff3c5a7f2819
https://doi.org/10.2138/am-2016-5556

Mossbauer parameters of iron in sulfate minerals

Autor: Stanley A. Mertzman, Elizabeth C. Sklute, G. J. Marchand, Erica Jawin, Melissa Nelms, Janice L. Bishop, Melissa D. Lane, E. A. Breves, Vanessa O’Connor, S. E. Peel, M. Darby Dyar, Yarrow Rothstein

Publikováno v: American Mineralogist. 98:1943-1965

Although Fe-sulfate minerals occur only rarely on Earth as alteration products of sulfidic basalts or in hydrothermal systems, multiple lines of evidence point to the importance of Fe- (and other) sulfate minerals on the surface of Mars. One such mar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14a6dcef8cd1c23c6b36e9de14dd2eea
https://doi.org/10.2138/am.2013.4604

Valleys in pit craters on Mars: Characteristics, distribution, and formation mechanisms

Autor: Caleb I. Fassett, S. E. Peel

Publikováno v: Icarus. 225:272-282

New observations of central pit craters on Mars reveal that some craters contain prominent interior valley networks that drain into their central pit. In this study, we catalog the distribution of pit craters with associated valleys, and characterize

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3f817fed37a6ee63aa1873b3a01deb2
https://doi.org/10.1016/j.icarus.2013.03.031

Accurate determination of ferric iron in garnets by bulk Mossbauer spectroscopy and synchrotron micro-XANES

Autor: Melissa Nelms, Erica Emerson, Jeremy S. Delaney, Jordan Tucker, E. A. Breves, Samuel W. Bell, Marie V. Ozanne, Alan B. Woodland, Marco L. Carmosino, Mickey E. Gunter, S. E. Peel, M. Darby Dyar, Antonio Lanzirotti

Publikováno v: American Mineralogist. 97:1726-1740

Measurements of Fe 3+ /∑Fe in geological materials have been intractable because of lack of access to appropriate facilities, the time-consuming nature of most analyses, and the lack of precision and reproducibility in most techniques. Accurate use

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7930e48a4803bb361f2f7e7e98e8c77f
https://doi.org/10.2138/am.2012.4107