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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Determinations of solid-liquid phase transformations of igneous rocks - concepts leading to use of lunar magma products
Solid to liquid phase transformation analyses of igneous rocks
Petrologic processes in lunar igneous rocks and lunar logistics
Hydration, oxidation, and origin of calc-alkali differentiation series of igneous rocks
Radar imagery used in geologic evaluation of glass-rich igneous rock and ancient flood plain of Twin Buttes area, Arizona
Apollo 11 lunar igneous rocks minerals and glassy phases characteristics, using electron probe microanalysis
Mineral chemistry of Apollo 11 igneous rocks, soil and breccia samples, comparing with meteorites
Chemical composition and reducing capacity of Apollo 11 igneous rocks, breccia and soil fines, using semimicro X ray fluorescence
Fe 57 nuclear hyperfine splittings in clinopyroxenes from lunar igneous rocks, determining temperature dependent cation distribution
Apollo 11 lunar specimen thermal diffusivity, conductivity and inertia in breccias and crystalline igneous rocks measured over wide temperature range
Apollo 11 lunar dust, breccia and igneous rocks, using Mossbauer spectroscopy and petrographic techniques
Apollo 11 igneous rock vug clinopyroxene composite crystal with tabular pigeonite nucleus and subcalcic augite precipitation
Lunar maria igneous rock compositions and magmatic liquid viscosity from samples 12021 and 12022, using microprobe analyses
Pyroxenes morphological significance in Apollo 12 lunar igneous rock samples petrogenesis, analyzing crystallization process history
The Mariner 9 infrared spectroscopy experiment has provided good quality spectra of many areas of Mars, predominantly in the Southern Hemisphere. Large portions of the thermal emission spectra are significantly affected by dust with a silicon oxide content approximately corresponding to that of an intermediate igneous rock, implying that Mars has undergone a substantial geochemical differentiation. Derived temperature profiles indicate a warm daytime upper atmosphere with a strong warming over the south polar cap. Atmospheric water vapor is clearly observed over the south polar area and less strongly over other regions.
The investigations were directed at determining the radiation history and surface chronology of lunar materials using the etched particle track technique. The major lunar materials studied are the igneous rocks and double core from Apollo 12, the breccia and soil samples from Apollo 14, and the core samples from Luna 16. In the course of this work two new and potentially important observations were made: (1) Cosmic ray-induced spallation-recoil tracks were identified. The density of such tracks, when compared with the density of tracks induced by a known flux of accelerator protons, yields the time of exposure of a sample within the top meter or two of moon's surface. (2) Natural, fine scale plastic deformation was found to have fragmented pre-existing charged particle tracks, allowing the dating of the mechanical event causing the deformation.
Samples returned from the Apollo 15 site consist of mare basalts and breccias with a variety of premare igneous rocks. The mare basalts are from at least two different lava flows. The bulk chemical compositions and textures of these rocks confirm the previous conclusion that the lunar maria consist of a series of extrusive volcanic rocks that are rich in iron and poor in sodium. The breccias contain abundant clasts of anorthositic fragments along with clasts of basaltic rocks much richer in plagioclase than the mare basalts. These two rock types also occur as common components in soil samples from this site. The rocks and soils from both the front and mare region exhibit a variety of shock characteristics that can best be ascribed to ray material from the craters Aristillus or Autolycus.