Results 91 to 100 of about 42,809 (200)

Stable magnesium peroxide at high pressure

, 2015
Rocky planets are thought to comprise compounds of Mg and O as these are among the most abundant elements, but knowledge of their stable phases may be incomplete.
Goncharov, Alexander F., Holtgrewe, Nicholas, Lobanov, Sergey S., Oganov, Artem R., Prakapenka, Vitali B., Prescher, Clemens, Zhu, Qiang   +6 more
core   +2 more sources

Lithological Controls on Aqueous Phosphorus on Ocean-covered Exoplanets

The Planetary Science Journal
On Earth, weathering of subaerial continental crust is necessary for the delivery of phosphorus (P)—a critical nutrient for life—to the oceans. However, P inputs, and therefore the potential for nutrient limitation on biological productivity, must be ...
Adam T. Stone, Bradford J. Foley, Benjamin M. Tutolo, Kimberly V. Lau   +3 more
doaj   +1 more source

Autonomous Detection of Mineral Phases in a Rock Sample Using a Space-prototype LIMS Instrument and Unsupervised Machine Learning

The Planetary Science Journal
In situ mineralogical and chemical analyses of rock samples using a space-prototype laser ablation ionization mass spectrometer along with unsupervised machine learning are powerful tools for the study of surface samples on planetary bodies.
Salome Gruchola, Peter Keresztes Schmidt, Marek Tulej, Andreas Riedo, Klaus Mezger, Peter Wurz   +5 more
doaj   +1 more source

Mineral Surface and Fluid Chemistry in Nakhlite Analog Water-Rock Reactions [PDF]

, 2018
We report on experiments with Mars analog materials under diagenetic conditions and find characteristic chemical surface changes in correspondence with the fluid ...
Bridges, J. C., Bullock, M. A., Chavez, C., Filiberto, J., Hicks, L. J., Kelley, S. P., McIntosh, R. A., Miller, M. A., Moore, J. M., Ott, U., Schwenzer, S. P., Smith, H., Swindle, T. D., Treiman, A. H.   +13 more
core  

Reflectance spectroscopy in planetary science: Review and strategy for the future [PDF]

Reflectance spectroscopy is a remote sensing technique used to study the surfaces and atmospheres of solar system bodies. It provides first-order information on the presence and amounts of certain ions, molecules, and minerals on a surface or in an ...
Mccord, Thomas B.
core   +1 more source

Empirical evidence for multi-decadal transients affecting geodetic velocity fields and derived seismicity forecasts in Italy

Scientific Reports
This study critically examines the use of geodetic strain rates for forecasting long-term earthquake rates in a slow-deforming region such as Italy, challenging the prevailing assumption of their temporal stationarity in interseismic stages for seismic ...
Michele M. C. Carafa, Peter Bird, Alessandro Verdecchia, Matteo Taroni, Carlo Doglioni   +4 more
doaj   +1 more source

Chondrule olivine: Relationship between structure and composition using synchrotron X-ray Laue microdiffraction [PDF]

, 2006
Published ...
Benedix, GK, Bland, PA, Butterworth, AL, Menzies, ON, Tamura, N   +4 more
core  

The Branched GDGT Isomer Ratio Refines Lacustrine Paleotemperature Estimates

Geochemistry, Geophysics, Geosystems
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are membrane‐spanning lipids synthesized by bacteria in numerous substrates. The degree of methylation of the five methyl brGDGTs in both soils and lake sediments, described by the MBT′5Me index ...
Joseph B. Novak, James M. Russell, Emma R. Lindemuth, Alexander A. Prokopenko, Lina Pérez‐Angel, Boyang Zhao, George E. A. Swann, Pratigya J. Polissar   +7 more
doaj   +1 more source

The Star-Planet Connection I: Using Stellar Composition to Observationally Constrain Planetary Mineralogy for the Ten Closest Stars

, 2017
15 pages, 5 figures, 5 tables, accepted to ...
Hinkel, Natalie, Unterborn, Cayman
openaire   +2 more sources

Remote Compositional Analyses of Space-weathered Lunar Maria

The Planetary Science Journal
Visible-to-shortwave infrared (VSWIR) reflectance spectroscopy has revolutionized our understanding of planetary surface compositions. However, space-weathering processes on airless bodies complicate quantitative compositional analyses.
Ji-In Jung, Mathieu G. A. Lapôtre, Ralph E. Milliken, Sarah E. Minson   +3 more
doaj   +1 more source