Results 21 to 30 of about 73,396 (320)

The problematically short superwind of OH/IR stars - Probing the outflow with the 69 {\mu}m spectral band of forsterite [PDF]

open access: yes, 2013
Spectra of OH/IR stars show prominent spectral bands of crystalline olivine (Mg$_{(2-2x)}$Fe$_{(2x)}$SiO$_{4}$). To learn more about the timescale of the outflows of OH/IR stars, we study the spectral band of crystalline olivine at 69 {\mu}m. The 69 {\mu}
Blommaert, J. A. D. L.   +6 more
core   +4 more sources

Spatial Pattern Investigation of Olivine on Mars using OMEGA and MOLA Remote Sensing Data: A Case Study at Valles Marineris and Nili Fossae [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Olivine is a mineral indicative of water activity in the mantle, and its presence can elucidate the petrological evolution and history of magmatic igneous rocks. In this work, we conducted a preliminary investigation into the characteristics and patterns
L. Jiao   +12 more
doaj   +1 more source

Formation mechanisms of ringwoodite: clues from the Martian meteorite Northwest Africa 8705

open access: yesEarth, Planets and Space, 2021
Ringwoodite and wadsleyite are the high-pressure polymorphs of olivine, which are common in shocked meteorites. They are the major constituent minerals in the terrestrial mantle.
Ting Zhang   +7 more
doaj   +1 more source

CO2 Carbonation of Olivine-Admixed Marine Clay: Suitability for Bottom Liner Application

open access: yesApplied Sciences, 2021
This paper focuses on employing an optimization approach in evaluating the hydraulic conductivity (HC) of CO2-carbonated olivine-admixed marine clay for possible utilization as a hydraulic barrier in engineered landfills to minimize leachate migration ...
Endene Emmanuel   +3 more
doaj   +1 more source

Olivine weathering in soil, and its effects on growth and nutrient uptake in Ryegrass (Lolium perenne L.): a pot experiment. [PDF]

open access: yesPLoS ONE, 2012
Mineral carbonation of basic silicate minerals regulates atmospheric CO(2) on geological time scales by locking up carbon. Mining and spreading onto the earth's surface of fast-weathering silicates, such as olivine, has been proposed to speed up this ...
Hein F M ten Berge   +5 more
doaj   +1 more source

Response of a Coastal Microbial Community to Olivine Addition in the Muping Marine Ranch, Yantai

open access: yesFrontiers in Microbiology, 2022
Spreading olivine powder in seawater to enhance alkalinity through weathering reactions has been proposed as a potential solution to control atmospheric CO2 concentration.
Hongwei Ren   +22 more
doaj   +1 more source

Oxygen isotope geochemistry of the second HSDP core [PDF]

open access: yes, 2003
Oxygen isotope ratios were measured in olivine phenocrysts (~1 mm diameter), olivine microphenocrysts (generally ~100–200 µm diameter), glass, and/or matrix from 89 samples collected from depths down to 3079.7 m in the second, and main, HSDP core (HSDP-2)
Eiler, John M.   +2 more
core   +1 more source

Olivine: a supergreen fuel [PDF]

open access: yesEnergy, Sustainability and Society, 2013
The hydration and carbonation of olivine, the most common mineral on Earth, produce a large amount of heat. Unfortunately, the reaction is too slow for normal technological applications, but when thermally well isolated, most of this heat can be recovered, not only for space heating but even for the production of high-pressure steam.
openaire   +4 more sources

Evolution of Olivine Fabrics During Deep Subduction and Exhumation of Continental Crust: Insights From the Yinggelisayi Garnet Lherzolite, South Altyn, NW China

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The different olivine fabrics in ultramafic rocks have been widely used to discuss past tectonic settings, given that the olivine fabrics vary with pressure, temperature and water content.
Guojian Geng   +9 more
doaj   +1 more source

Trace element geochemistry of ordinary chondrite chondrules: the type I/type II chondrule dichotomy [PDF]

open access: yes, 2015
We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations ...
Alard, Olivier   +2 more
core   +2 more sources

Home - About - Disclaimer - Privacy