Results 81 to 90 of about 67,223 (338)

The coal-forming environment during mass extinction in the latest permian: Evidence from geochemistry of rare Earth elements

Frontiers in Earth Science, 2023
The C1 coal of Latest Permian during mass extinction in eastern Yunnan was studied to reveal the terrestrial paleoenvironment and influence of geological events on coal-formation during mass extinction.
Juan Wang, Juan Wang, Juan Wang, Longyi Shao, Zhiming Yan, Xuetian Wang   +5 more
doaj   +1 more source

A new high-resolution chronology for the late Maastrichtian warming event: Establishing robust temporal links with the onset of Deccan volcanism

, 2017
The late Maastrichtian warming event was defined by a global temperature increase of ∼2.5–5 °C that occurred ∼150–300 k.y. before the Cretaceous-Paleogene (K-Pg) mass extinction. This transient warming event has traditionally been associated with a major
J. Barnet, K. Littler, D. Kroon, M. Leng, T. Westerhold, U. Röhl, J. Zachos   +6 more
semanticscholar   +1 more source

End-Cretaceous extinction in Antarctica linked to both Deccan volcanism and meteorite impact via climate change

Nature Communications, 2016
The cause of the end-Cretaceous (KPg) mass extinction is still debated due to difficulty separating the influences of two closely timed potential causal events: eruption of the Deccan Traps volcanic province and impact of the Chicxulub meteorite. Here we
S. Petersen, A. Dutton, K. C. Lohmann
semanticscholar   +1 more source

Trace Ru‐Doped PtCuRu@PtRu Core‐Shell Electrocatalyst for CO‐Resilient Methanol Oxidation

Advanced Science, EarlyView.
We engineered a trace Ru‐doped PtCuRu@PtRu core‐shell nanostructure. This design exploits lattice mismatch‐induced compressive strain between the PtCuRu ternary core and trace Ru‐doped Pt‐rich shell, systematically downshifting the Pt d‐band center to weaken *CO adsorption energetics.
Tianrui Xue, Shiyue Xing, Zhongliang Liu, Yiting Song, Jianyi Zhang, Miaomiao Liu, Huihui Li, Chunzhong Li   +7 more
wiley   +1 more source

Atomic‐Level CuOx‐CoOx‐Pd Interfacial Engineering Enables Hierarchical Synergy for High‐Efficiency ORR Pathways and Boosted Power Output in Alkaline Fuel Cells

Advanced Science, EarlyView.
Atomically dispersed CuOx (CPCu‐1) forms isolated Cu–Ov sites that enable defect‐mediated O2 activation and fast electron/proton transfer via interfacial synergy. In contrast, thick CuOx clusters (CPCu‐10) promote a surface‐adsorption‐controlled pathway with intermediate accumulation, highlighting a mechanism switch from interfacial activation to ...
Yang‐Yang Hsu, Ching‐Hua Fan, Kuan‐Wen Wang, Kuang‐Kuo Wang, Nozomu Hiraoka, Hirofumi Ishii, Ting‐Shan Chan, Po‐Chun Chen, Tsan‐Yao Chen   +8 more
wiley   +1 more source

Volcanism in slab tear faults is larger than in island-arcs and back-arcs

Nature Communications, 2017
Subduction-transform edge propagators are lithospheric tears bounding slabs and back-arc basins. The volcanism at these edges is enigmatic because it is lacking comprehensive geological and geophysical data.
L. Cocchi, S. Passaro, F. Tontini, Guido Ventura   +3 more
semanticscholar   +1 more source

The Atlas of Morocco: A Plume‐Assisted Orogeny

Geochemistry, Geophysics, Geosystems, 2023
We explore the connections between crustal shortening, volcanism, and mantle dynamics in the Atlas of Morocco. In response to compressional forces and strain localization, this intraplate orogen has evolved far from convergent plate margins.
R. Lanari, C. Faccenna, C. Natali, E. Şengül Uluocak, M. G. Fellin, T. W. Becker, O. H. Göğüş, N. Youbi, R. Clementucci, S. Conticelli   +9 more
doaj   +1 more source

Generation of volcanic ash by basaltic volcanism [PDF]

Journal of Geophysical Research: Solid Earth, 2012
The recent eruptions of Eyjafjallajökull and Grimsvötn volcanoes in Iceland demonstrate the importance of a better understanding of processes leading to the formation of volcanic ash, specifically of fine volcanic ash that poses a threat to air traffic.
Tobias Dürig, Ingo Sonder, Bernd Zimanowski, Hermann Beyrichen, Ralf Büttner   +4 more
openaire   +1 more source

Confinement‐Driven CO Spillover in CuAg@MSN Tandem Catalysts Boosts C2 Selectivity Toward Electrocatalytic CO2 Reduction

Advanced Science, EarlyView.
The CuAg@MSN catalyst developed in this study promotes C─C coupling by regulating the coverage of *CO intermediates through spatial confinement effects, significantly enhancing the selectivity of CO2 electroreduction for C2 product formation. ABSTRACT Tandem catalysts represent a promising paradigm for synergistic electrochemical CO2 reduction (CO2RR ...
Jiaying Zhang, Junjie Huang, Siying Zhang, Yanjia Cui, Chao Kong, Zijian Peng, Huihui Jiang, Sirui Deng, Zhuoyao Chen, Caili Yang, Ketong He, Zhen Li, Yibing Song, Gongwei Wang, Lin Zhuang   +14 more
wiley   +1 more source

An Integrated Geologic Map of the Rembrandt Basin, on Mercury, as a Starting Point for Stratigraphic Analysis

Remote Sensing, 2020
Planetary geologic maps are usually carried out following a morpho-stratigraphic approach where morphology is the dominant character guiding the remote sensing image interpretation.
Andrea Semenzato, Matteo Massironi, Sabrina Ferrari, Valentina Galluzzi, David A. Rothery, David L. Pegg, Riccardo Pozzobon, Simone Marchi   +7 more
doaj   +1 more source