Results 131 to 140 of about 220,882 (295)

Local slab penetration into lower mantle controls deep-focus seismicity and Changbaishan volcanism in northeast China

Nature Communications
Intraplate volcanism in the Changbaishan region of northeast China is underlain by a deep subduction-related earthquake cluster in the mantle transition zone, but the underlying physical connections between them remain elusive.
Lei Gao, Haijiang Zhang, Robert Myhill, Ji Gao, Wei Leng   +4 more
doaj   +1 more source

Mapping the mantle transition zone beneath Hawaii from Ps receiver functions: Evidence for a hot plume and cold mantle downwellings

, 2017
Hawaii is the archetypal example of hotspot volcanism. Classic plume theory suggests a vertical plume ascent from the core–mantle boundary to the surface. However, recently it has been suggested that the plume path may be more complex.
M. Agius, C. Rychert, N. Harmon, G. Laske   +3 more
semanticscholar   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

A poorly mixed mantle transition zone and its thermal state inferred from seismic waves

Nature Geoscience, 2021
L. Waszek, B. Tauzin, N. Schmerr, M. Ballmer, J. Afonso   +4 more
semanticscholar   +1 more source

Orchestrated molecular changes of proliferative, migratory‐fibrillar, synaptic, and postmigratory compartments align with precocious cortex‐type specification in the early human pallium

Journal of Anatomy, EarlyView.
Early human cortical development is organized by transient cellular compartments that define cortical types before mature layers form. Analysis of the human fetal pallium (7.5–15 PCW) shows distinct spatiotemporal trajectories for the archicortex, mesocortex, and neocortex, with delayed but accelerated differentiation in allocortical regions.
Janja Kopić, Fran Božić, Alisa Junaković Munjas, Željka Krsnik, Ivica Kostović   +4 more
wiley   +1 more source

Thermoelastic Properties of Ringwoodite [Fe_x,Mg_(1-x)]_2SiO_4: Its Relationship to the 520 km Seismic Discontinuity

, 2012
We combine density functional theory (DFT) within the local density approximation (LDA), the quasiharmonic approximation (QHA), and a model vibrational density of states (VDoS) to calculate elastic moduli and sound velocities of gamma-[Fe_x,Mg_(1-x ...
Abramson, Akaogi, Bagley, Baroni, Carrier, Ceperley, Chambers, Da Silveira, Deuss, Giannozzi, Higo, Hohenberg, Hsu, Isaak, Isaak, Isaak, Isaak, Jackson, Jaques, Justin Revenaugh, Katsura, Kohn, Lawrence, Li, Li, Li, Li, Li, Liu, Maribel Núñez Valdez, Mayama, Mayama, Núñez Valdez, Núñez Valdez, Putnis, Renata M. Wentzcovitch, Revenaugh, Rigden, Rinwood, Saikia, Shearer, Shearer, Sinogeikin, Sinogeikin, Sinogeikin, Stackhouse, Umemoto, Vanderbilt, Wallace, Watt, Watt, Weidner, Wentzcovitch, Wentzcovitch, Wu, Xu, Yonggang G. Yu, Yu, Zha, Zhongqing Wu   +59 more
core   +1 more source

New knowledge about shock events that affected the L‐chondrite parent body from two heavily shocked L6 meteorite finds

Meteoritics &Planetary Science, EarlyView.
Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis, L. Ferrière, C. Ma, J. Hu, D. Palles, P. D. Asimow   +5 more
wiley   +1 more source

Ecological and genomic variation in ectomycorrhizal fungal exploration types

New Phytologist, EarlyView.
Summary Ectomycorrhizal fungi (EMF) produce mycelia with variable extension and complexity, which can be classified according to soil ‘exploration types’ (ETs). ETs have received attention as one of the few mycorrhizal trait frameworks, but without an empirical classification of ET functional diversity and environmental preferences, understanding and ...
Thomas M. Mansfield, Artin Zarsav, Filipa Cox, Laura M. Suz, Martin I. Bidartondo, Sietse van der Linde, Nadia Barsoum, Colin Averill, Alan Kuo, Leho Tedersoo, Pasi Rautio, Arthur Gessler, Bruno De Vos, Luc Croisé, Henning Meesenburg, Markus Wagner, Frank Jacob, Paweł Lech, Anna Kowalska, Martin Greve, Genoveva Popova, Beat Frey, Marcus Schaub, Marco Ferretti, Peter Waldner, Vicent Calatayud, Roberto Canullo, Giancarlo Papitto, Aleksander Marinšek, Lars Vesterdal, Morten Ingerslev, Helge Meissner, Volkmar Timmermann, Nadine Eickenscheidt, Andreas Schmitz, Francis M. Martin, Joseph Spatafora, Peter G. Kennedy, Annegret Kohler, Jonathan M. Plett, Ian C. Anderson, Sara Branco, Igor V. Grigoriev, Chris J. Pires, Sarah A. Unruh, Lawrence W. Zettler, Otto Miettinen, Ilya Viner, Tom W. May, Teresa Lebel, David E. A. Catcheside, Pamela S. Catcheside, Helen P. Vonow, Leigh A. Burgoyne, Julia Haska, Mark A. Anthony   +55 more
wiley   +1 more source

Slab buckling as a driver for rapid oscillations in Indian plate motion and subduction rate

Communications Earth & Environment
Plate tectonics is primarily driven by the constant gravitational pull of slabs where oceanic lithosphere sinks into the mantle at subduction zones. Under stable plate boundary configurations, changes in plate motion are then thought to occur gradually ...
Erik van der Wiel, Jakub Pokorný, Hana Čížková, Wim Spakman, Arie P. van den Berg, Douwe J. J. van Hinsbergen   +5 more
doaj   +1 more source

What is a Multi‐Ethnic Party and How to Spot a Fake One?

Swiss Political Science Review, EarlyView.
Abstract Multi‐ethnic parties have been variously defined: as those which do not champion the interests of, or mobilize against, any specific ethnic group; as those with a recognisably cross‐communal leadership or membership; and as those which acquire some distribution of support across groups.
Jon Fraenkel
wiley   +1 more source