Results 71 to 80 of about 42,838 (280)
Mineralogy and Surface Composition of Asteroids
, 2015 Methods to constrain the surface mineralogy of asteroids have seen considerable development during the last decade with advancement in laboratory spectral calibrations and validation of our interpretive methodologies by spacecraft rendezvous missions ...
Burbine, Thomas H. +4 more
core +1 more source
Mafic alkaline metasomatism in the lithosphere underneath East Serbia: evidence from the study of xenoliths and the host alkali basalts [PDF]
, 2010 Effects of mafic alkaline metasomatism have been investigated by a combined study of the East Serbian mantle xenoliths and their host alkaline rocks.
Cvetkovic, V. +4 more
core +1 more source
Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen
Geological Journal, EarlyView.By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang +3 more
wiley +1 more source
The Planetary Science JournalWe present globally inverted pressure–temperature ( P – T ) phase diagrams up to 5000 GPa for four fundamental planetary materials, Fe, MgO, SiO _2 , and MgSiO _3 , derived from logistic regression and supervised learning, together with an experimental ...
Junjie Dong +4 more
doaj +1 more source
Domainal Investigation of a Quartz-Fluorite Composite Using Spectroscopic Techniques
Atoms, 2022 The analysis of geological samples that have several chemically diffused zones which formed under certain physico-chemical condition is difficult to achieve. The quantitative estimations of the minerals in such samples are tedious.
Sonali Dubey +5 more
doaj +1 more source
Impacts of Biostimulants on Nitrous Oxide Emissions and the Soil Microbiome
Journal of Plant Nutrition and Soil Science, EarlyView.Soil incubation experiment examining the influence of biostimulants on greenhouse gas emissions and the soil microbiome in fertilized soils. ABSTRACT Background Overapplication of nitrogenous fertilizer and enhanced microbial activity in agricultural soils are drivers of increasing greenhouse gas emissions.
Conor Blunt +4 more
wiley +1 more source
Metalliferous Biosignatures for Deep Subsurface Microbial Activity [PDF]
, 2015 Acknowledgments We thank the British Geological Survey (BGS) for the provision of samples and the Science & Technology Facilities Council (STFC) grant (ST/L001233/1) for PhD funding which aided this project.
Bowden, Stephen +3 more
core +1 more source
Assessing the intensity of Late Quaternary humid phases in the Nefud Desert, northern Arabia
Journal of Quaternary Science, EarlyView.ABSTRACT The climate history of the major dryland zones of the world, such as the Saharo–Arabian Desert belt, plays a key role in the dispersal of early humans through these intermittently inhospitable regions. Here, we assess the relative intensity of Late Quaternary humid phases in northern Arabia through lithological, geochemical, palaeoecological ...
Richard Clark‐Wilson +9 more
wiley +1 more source
The Planetary Science JournalWe provide the first detailed 1:100,000 scale geomorphologic map of the ∼100 km Amundsen crater region, which is of high scientific relevance for future exploration, e.g., NASA’s VIPER mission, the Artemis program, and the Chinese International Lunar ...
Lukas Wueller +4 more
doaj +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Contaminants of emerging concern (CECs) in agriculture represent a growing global challenge for food safety and public health. In this review, we synthesized evidence on how substances such as pharmaceuticals, microplastics, and per‐ and polyfluoroalkyl substances (PFAS) enter soils, accumulate in crops, and affect ecological and human health. We found
Laura J. Carter +8 more
wiley +1 more source