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Full-Text Articles in Physical Sciences and Mathematics
Morphological, Structural And Spectral Mapping Of The Central Uplifts Of The Alga And Verlaine Craters, Mars, Bianca D'Aoust
Morphological, Structural And Spectral Mapping Of The Central Uplifts Of The Alga And Verlaine Craters, Mars, Bianca D'Aoust
Electronic Thesis and Dissertation Repository
Impact cratering is a ubiquitous geological process that has shaped planetary bodies of the Solar System and beyond. While the impact cratering record on Earth has been poorly preserved, the Martian surface is characterized by a very old and cratered terrain. Central uplifts within complex impact craters are of particular interest as they expose deep-seated material, some of which may correspond to samples of the early Martian crust. Central uplift formation is, however, still a poorly understood geological process. This research investigated the origin of the exposed bedrock in the central uplifts of two Martian complex craters as well as …
Reflectance And Emission Spectroscopy: Curve Fitting Methods With Application To Impact Glasses And The Varying Grain Size Of Planetary Analogue Minerals, Michael A. Craig
Reflectance And Emission Spectroscopy: Curve Fitting Methods With Application To Impact Glasses And The Varying Grain Size Of Planetary Analogue Minerals, Michael A. Craig
Electronic Thesis and Dissertation Repository
Spectroscopy, i.e., the measurement of electromagnetic radiation as a function of wavelength, is arguably the technique most responsible for the majority of what is collectively known about the composition of stars, the distances to galaxies, the age of the universe and so on. Spectroscopy is also the tool most used to discern the mineralogy of planetary bodies remotely. Measuring the speed at which a star is receding and its composition, or the composition of an interstellar cloud of gas are well understood uses of spectroscopy. When it comes to spectroscopies use to discern mineralogy, the scientific literature on the subject …
Morphology And Morphometry Of Double Layered Ejecta Craters On Mars, Ryan Schwegman
Morphology And Morphometry Of Double Layered Ejecta Craters On Mars, Ryan Schwegman
Electronic Thesis and Dissertation Repository
Double layered ejecta (DLE) craters display two distinct layers of ejecta that appear to have been emplaced as a mobile, ground-hugging flow. While volatile content within the target, atmosphere, or some combination of the two is generally considered a major variable enhancing the mobility of ejecta, the presence of unconsolidated surface materials may also have some effect. This statement is studied further here, aiming to determine whether bulk target lithology and/or attributes of the surface have any effect on morphometric properties between DLEs situated on sedimentary targets to those on volcanic ones. Results suggest that ejecta mobility (the distance ejecta …