Results 91 to 100 of about 73,396 (320)

Severe Strain‐Induced Olivine‐Ringwoodite Transformation at Room Temperature: Key to Enigmas of Deep‐Focus Earthquake

Geophysical Research Letters
Deep‐focus earthquakes at 350–660 km are presumably caused by olivine‐spinel phase transformation (PT). This cannot, however, explain the observed high seismic strain rate, which requires PT to complete within seconds, while metastable olivine does not ...
F. Lin, V. I. Levitas, S. Yesudhas, A. Dhar, J. Smith   +4 more
doaj   +1 more source

Quantifying the timescales of fluid-rock interaction on Mars using the nakhlite meteorites [PDF]

, 2013
Etch pits within olivine grains from the nakhlite meteorites reveal the magnitude and timescale of water-mediated alteration of the martian ...
Lee, M.R., Mark, D.F., Smith, C., Stuart, F.M., Tomkinson, T.   +4 more
core  

A continuous 500‐year sediment record of inundation by local and distant tsunamis in South‐Central Chile (40.1°S)

The Depositional Record, EarlyView.
Tsunami events over the past 500 years inundated Laguna Gemela West (Chile), leading to distinct sandy deposits in the lake record. This provides a complete perspective on tsunami inundation, including giant tsunamis, small local tsunamis and tsunamis that originated >100 km away from the site.
Jasper Moernaut, Evelien Boes, Daniel Melnick, Matías Carvajal, Markus Niederstätter, Sabine Schmidt, Diego Aedo, Mario Pino, Marc De Batist   +8 more
wiley   +1 more source

Are Large Trojan Asteroids Salty? An Observational, Theoretical, and Experimental Study

, 2012
With a total mass similar to the main asteroid belt, the Jovian Trojan asteroids are a major feature in the solar system. Based upon the thermal infrared spectra of the largest Trojans obtained with the Spitzer space telescope, Emery et al.
Glotch, Timothy, Lucey, Paul, Yang, Bin
core   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

Deep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza, Hendrik Grobler, Moshood Onifade, Manoj Khandelwal   +3 more
wiley   +1 more source

Predicted thermoelectric properties of olivine-type Fe2GeCh4 (Ch = S, Se and Te)

, 2015
We present here the thermoelectric properties of olivine-type Fe2GeCh4 (Ch = S, Se and Te) using the linear augmented plane wave method based on first principles density functional calculations.
Gudelli, Vijay Kumar, Kanchana, V, Vaitheeswaran, G   +2 more
core   +1 more source

Challenges and the Way to Improve Lithium‐Ion Battery Technology for Next‐Generation Energy Storage

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Challenges and prospects for lithium‐ion battery. As a forefront energy storage technology, lithium‐ion batteries (LIBs) have garnered immense attention across diverse applications, including electric vehicles, consumer electronics, and medical devices, owing to their exceptional energy density, minimal self‐discharge rate, high open circuit voltage ...
Ashaduzzaman Khan, Harun Al Rashid, Pijush Kanti Roy, Samiul Islam Chowdhury, Sharmin Ara Sathi   +4 more
wiley   +1 more source

Forming Olivine Phenocrysts in Basalt: A 3D Characterization of Growth Rates in Laboratory Experiments

Frontiers in Earth Science, 2019
Our current knowledge of the genesis, ascent, storage, and eruption of mafic magmas is intimately linked with olivine, its primary crystal cargo. Recent claims that phenocryst-size crystals can grow rapidly and non-concentrically are challenging our ...
Adrien J. Mourey, Thomas Shea
doaj   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Comparative effects of olivine and sand on KOH-treated clayey soil

Open Geosciences
Improving the strength of clayey soils remains a key concern in geotechnical practice. This study presents a comparative investigation of the effects of olivine waste and sand grains on a clayey soil, both in the absence and presence of potassium ...
Tahir Abdelmaoula Mahamoud, Sert Sedat, Arslan Eylem, Bol Ertan, Özocak Aşkın, Atlı İbrahim   +5 more
doaj   +1 more source