Results 21 to 30 of about 42,838 (280)
The Astrophysical Journal, 2023 Rocky planet compositions regulate planetary evolution by affecting core sizes, mantle properties, and melting behaviors. Yet, quantitative treatments of this aspect of exoplanet studies remain generally underexplored.
Rob J. Spaargaren +4 more
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Salt Distribution from Freezing Intrusions in Ice Shells on Ocean Worlds: Application to Europa
The Planetary Science Journal, 2023 Several icy moons and dwarf planets appear to have hosted subsurface liquid water. Liquid water intruding upwards into the icy outer shells of these worlds freezes, forming ice and (from ocean solutes) non-ice solids.
Mariam Naseem +5 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, 2021 Iron is the most abundant redox‐sensitive element on the Earth's surface, and the oxidation state, mineral host, and crystallinity of Fe‐rich phases in sedimentary systems can record details of water‐rock interactions and environmental conditions ...
Rachel Y. Sheppard +9 more
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Modal mineralogy of planetary surfaces from visible and near-infrared spectral data [PDF]
2010 2nd Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2010 Real planetary surfaces are composed of several to many different minerals and ices. Deconvolving a reflectance spectrum to material abundance in an unambiguous way is difficult, because the spectra are complex nonlinear functions of grain size, abundance, and material opacity.
Poulet, F. +4 more
openaire +2 more sources
A GENERIC RIGOROUS SENSOR MODEL FOR PHOTOGRAMMETRIC PROCESSING OF PUSHBROOM PLANETARY IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Currently, each planetary exploration mission team always develops its own software modules to support the photogrammetric processing of planetary images, and as a result of that the main drawbacks are lacking software reusability and the high cost of ...
X. Geng, X. Geng, S. Xing, Q. Xu
doaj +1 more source
The Lyavaraka Ultrabasic Complex, Serpentinite Belt, Kola Peninsula, Russia
Geosciences, 2022 The Paleoproterozoic Lyavaraka ultrabasic complex is one of several dunite–harzburgite–orthopyroxenite bodies exposed as shallow plutonic complexes in the Serpentinite Belt, Kola Peninsula, Russia. Lyavaraka and the other complexes are anorogenic, formed
Andrei Y. Barkov +3 more
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Planetary Materials (Reviews in Mineralogy, Volume 36) [PDF]
Eos, Transactions American Geophysical Union, 1999 Understanding the origin of planetary systems requires our comprehension of the materials from which the planets in our solar system formed. Exploring planetary formation draws from and contributes to a variety of scientific disciplines ranging from astrophysics to geology. One of the methods for understanding the composition and the geological history
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Earth and Space Science, 2023 Although pyroxene has been detected remotely across the Solar System, limited information is available from infrared remote sensing about the Mg‐Fe composition of pyroxene, and distinguishing between augite (20 < CaSiO3 < 45) and diopside‐hedenbergite ...
Christopher H. Kremer +2 more
doaj +1 more source
Chemical weathering and provenance evolution of Holocene–Recent sediments from the Western Indus Shelf, Northern Arabian Sea inferred from physical and mineralogical properties [PDF]
, 2012 We present a multi-proxy mineral record based on X-ray diffraction and diffuse reflectance spectrophotometry analysis for two cores from the western Indus Shelf in order to reconstruct changing weathering intensities, sediment transport, and provenance ...
Clift, Peter D. +5 more
core +2 more sources
Expanding the application of the Eu-oxybarometer to the lherzolitic shergottites and nakhlites: Implications for the oxidation state heterogeneity of the Martian interior [PDF]
, 2009 Experimentally rehomogenized melt inclusions from the nakhlite Miller Range 03346 (MIL 03346) and the lherzolitic shergottite Allan Hills 77005 (ALH 77005) have been analyzed for their rare earth element (REE) concentrations in order to characterize the ...
Elkins-Tanton, Linda +2 more
core +1 more source