Results 21 to 30 of about 32,532 (281)

Morphology and surface features of olivine in kimberlite: implications for ascent processes [PDF]

open access: yesSolid Earth, 2014
Most kimberlite rocks contain large proportions of ellipsoidal-shaped xenocrystic olivine grains that are derived mainly from disaggregation of peridotite. Here, we describe the shapes, sizes and surfaces of olivine grains recovered from kimberlite lavas
T. J. Jones   +3 more
doaj   +1 more source

Titanium and water-rich metamorphic olivine in high-pressure serpentinites from the Voltri Massif (Ligurian Alps, Italy): evidence for deep subduction of high-field strength and fluid-mobile elements [PDF]

open access: yes, 2014
Titanium- and water-rich metamorphic olivine (Fo 86–88) is reported from partially dehydrated serpentinites from the Voltri complex, Ligurian Alps. The rocks are composed of mostly antigorite and olivine in addition to magnetite, chlorite, clinopyroxene ...
Hattori, Keiko   +6 more
core   +1 more source

Mineral reaction and deformation in Plagioclase-Olivine composites : an experimental study [PDF]

open access: yes, 2004
Deformation and metamorphism of rocks are fundamentally interrelated but the ways in which processes of reaction and deformation mutually influence each other are still poorly understood in natural rocks.
Ronde, Almar A. de
core   +1 more source

Olivine Dissolution in Simulated Lung and Gastric Fluid as an Analog to the Behavior of Lunar Particulate Matter Inside the Human Respiratory and Gastrointestinal Systems

open access: yesGeoHealth, 2021
With the Artemis III mission scheduled to land humans on the Moon in 2025, work must be done to understand the hazards lunar dust inhalation would pose to humans.
Donald A. Hendrix   +3 more
doaj   +1 more source

Shear-Induced ringwoodite formation in the Martian shergottite Dar al Gani 670 [PDF]

open access: yes, 2013
Shock-produced melt veins in the Martian shergottite Dar al Gani 670 crosscut large olivine crystals. The upper part of one of these crystals appears to be sheared off and displaced along the shock vein.
Fritz, Jörg   +3 more
core   +1 more source

1. Experimental Investigation of Hydrous Melting of the Earth’s Upper Mantle, and 2. Olivine Abundances and Compositions in Hawaiian Lavas [PDF]

open access: yes, 2010
(1) The presence of small amounts of water dissolved within nominally-anhydrous minerals in the earth has significant effects on the chemistry of melting in the Earth’s mantle.
Balta, Joseph Brian
core   +1 more source

Was the Kalkarindji Continental Flood Basalt Province a Driver of Environmental Change at the Dawn of the Phanerozoic?

open access: yesGeophysical Monograph Series, Page 435-447., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Peter E. Marshall   +2 more
wiley  

+2 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

Multiscale modeling of upper mantle plasticity: From single-crystal rheology to multiphase aggregate deformation [PDF]

open access: yes, 2014
We report a first application of an improved second-order (SO) viscoplastic self-consistent model for multiphase aggregates, applied to an olivine + diopside aggregate as analogue for a dry upper mantle peridotite deformed at 10 15 s 1 shear strain rate ...
CORDIER, Patrick   +6 more
core   +1 more source

Evidence for silicate dissolution on Mars from the Nakhla meteorite [PDF]

open access: yes, 2013
Veins containing carbonates, hydrous silicates and sulphates that occur within and between grains of augite and olivine in the Nakhla meteorite are good evidence for the former presence of liquid water in the Martian crust.
Smith, C.L.   +8 more
core   +1 more source

Home - About - Disclaimer - Privacy