William C. Mahaney

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Geophagy or soil ingestion is a multidisciplinary phenomenon that has attracted the attention of many researchers in recent years; who have sought to understand why a large number of animals consume natural earths. To find out why animals ingest soils, it is of paramount importance to establish standard methods to analyze comestible soil. Researchers have(More)
The Younger Dryas impact hypothesis posits that a cosmic impact across much of the Northern Hemisphere deposited the Younger Dryas boundary (YDB) layer, containing peak abundances in a variable assemblage of proxies, including magnetic and glassy impact-related spherules, high-temperature minerals and melt glass, nanodiamonds, carbon spherules, aciniform(More)
Introduction: A fundamentally new scientific mission concept for remote planetary surface and subsurface reconnaissance recently has been devised [1-3] that soon will replace the engineering and safety constrained mission designs of the past, allowing for optimal acquisition of geologic, paleohydrologic, paleoclimatic, and possible astrobiologic information(More)
A " tier-scalable " paradigm integrates multi-tier (orbit⇔atmosphere⇔surface/subsurface) and multi-agent (orbiter(s)⇔blimps⇔rovers, landers, drill rigs, sensor grids) hierarchical mission architectures [1-4], not only introducing mission redundancy and safety, but enabling and optimizing intelligent, unconstrained, and distributed science-driven exploration(More)
Recent speculation [1] on the origin of 'blueberries'— concretionary Fe-rich nodules—on Earth and their relationship to similar concretionary forms on Mars invokes a process of variable redox conditions in underground fluids penetrating porous sediment and precipitating hematite/goethite rich material. The presence of concretions on Mars likely involves a(More)
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