Results 91 to 100 of about 8,743 (239)

A high‐energy X‐ray beamline for materials science research at SPring‐8: BL15XU

Journal of Synchrotron Radiation, EarlyView.
The Japanese synchrotron facility SPring‐8 has recently relaunched BL15XU as a high‐energy X‐ray beamline for materials science research. A comprehensive description of the technical details and science cases is presented.The high‐energy X‐ray beamline BL15XU is designed to drive advancements in materials science and high‐pressure research by ...
Hiroyuki Ohsumi, Yuji Higo, Yujiro Hayashi, Jaemyung Kim, Noriyoshi Tsujino, Sho Kakizawa, Tetsuo Irifune, Tomohiro Ohuchi, Yoshio Kono, Hirokatsu Yumoto, Takahisa Koyama, Hiroshi Yamazaki, Yasunori Senba, Haruhiko Ohashi, Hidekazu Takano, Michihiro Sugahara, Taito Osaka, Makina Yabashi   +17 more
wiley   +1 more source

Valence and spin states of iron are invisible in Earth’s lower mantle

Nature Communications, 2018
Bridgmanite is the most abundant mineral in the lower mantle and therefore is crucial to interpreting geophysical observations and models. Here, the authors show that ferric-iron-only bridgmanite Fe3+ undergoes a spin transition at 43–53 GPa at 300 K and
Jiachao Liu, Susannah M. Dorfman, Feng Zhu, Jie Li, Yonggang Wang, Dongzhou Zhang, Yuming Xiao, Wenli Bi, E. Ercan Alp   +8 more
doaj   +1 more source

Fluid Dynamics of Mantle Plumes

, 2007
A ‘hotspot’ (Wilson 1963) is a long-term source of volcanism which is fixed relative to the plate overriding it. Common signatures of hotspots include a bathymetric swell and an associated gravity anomaly; basalt geochemistry different from normal mid-ocean ridge basalts; and volcanic chains with a clear age progression parallel to the plate motion, in
Ribe, N., Davaille, A., Christensen, U.
openaire   +3 more sources

High‐pressure and high‐temperature polymorphism of Na2CO3 up to 10 GPa

Acta Crystallographica Section B, EarlyView.
Two new high‐pressure phases, ϵ and ϵ‐II, observed during in situ experiments, complete the high‐pressure phase diagram of Na2CO3 and show that both the incommensurate γ phase and the ϵ phase are stable over a wider pressure–temperature range under mantle‐relevant conditions.We report two new high‐pressure polymorphs of sodium carbonate, ϵ and ϵ‐II ...
Benedetta Chrappan Soldavini, Marco Merlini, Chiara Mangano, Davide Comboni, Wilson Crichton, Michael Hanfland   +5 more
wiley   +1 more source

Spatial Variations in the Degree of Upper‐Mantle Depletion in a Mid‐Ocean Ridge–Transform Fault System

Geochemistry, Geophysics, Geosystems
Partial melting beneath a mid‐ocean ridge creates a chemically depleted layer in the uppermost mantle. This chemical depletion lowers the density of the lithosphere compared with the unmelted mantle.
M. Morishige
doaj   +1 more source

MANTLE WEDGE DYNAMICS

, 2007
[1] In the Apennines subduction (Italy), earthquakes mainly occur within the overriding plate, along the chain axis. The events concentrate in the upper 15 km of the crust above the mantle wedge, and focal solutions indicate normal faulting. In the foreland, the seismogenic volume affects the upper 35 km of the crust.
Francesca Romana Cinti, N. Alessandro Pino, Guido Ventura, Francesca Di Luccio   +3 more
openaire   +1 more source

The company you keep: becoming one(self) in an Indonesian convent En bonne compagnie : devenir (quelqu’)un dans un couvent indonésien Pergaulan dalam biara di Indonesia: sebuah proses pembentukan diri*

Journal of the Royal Anthropological Institute, EarlyView.
This article investigates companionate processes of self‐making in a religious community of Catholic nuns in eastern Indonesia. I argue that the sociality of the convent establishes a unique context for understanding the effects of one's company on processes of self‐becoming.
Meghan Rose Donnelly
wiley   +1 more source

Data for "joint modeling of lithosphere and mantle dynamics: Sensitivity to viscosities within the lithosphere, asthenosphere, transition zone, and D" layers". [PDF]

Data Brief, 2020
Wang X, Holt WE, Ghosh A.
europepmc   +1 more source

Cuttings, Combings, Fettlings and Flock: Gender and Australian Wool ‘Waste’, 1900–1950

Gender &History, EarlyView.
ABSTRACT As Australia's wool industry produced vast amounts of fine fleece from the nineteenth century, the wool processing and clothes manufacturing industries generated waste – products like cuttings, combings, fettlings and flock. Salvaged and then sold to waste merchants, these and other materials had a second life.
Lorinda Cramer
wiley   +1 more source

Depth-varying azimuthal anisotropy and mantle flow in the Patagonian slab window

Seismica
Subduction of spreading ridges forms slab windows which perturb the local structure and dynamics of the upper mantle. Slab windows may alter the pattern of mantle flow and serve as portals for the exchange of mantle material between upper mantle ...
Hannah Mark, Douglas Wiens, Walid Ben Mansour, Zhengyang Zhou   +3 more
doaj   +1 more source