Results 41 to 50 of about 42,866 (280)

Reassessing the intrusive tempo and magma genesis of the late Variscan Aar batholith: U–Pb geochronology, trace element and initial Hf isotope composition of zircon

Swiss Journal of Geosciences, 2022
The Variscan orogeny was responsible for the formation of a significant volume of igneous basement throughout present-day Europe. Detailed understanding of these rocks has, however, been obfuscated by significant overprinting during younger geologic ...
Mélissa Ruiz, Urs Schaltegger, Sean P. Gaynor, Massimo Chiaradia, Jürgen Abrecht, Christian Gisler, Federico Giovanoli, Michael Wiederkehr   +7 more
doaj   +1 more source

COMMENTS ON THE ARTICLE AUTHORED BY M.V. MINTS AND K.A. DOKUKINA – THE BELOMORIAN ECLOGITE PROVINCE (EASTERN FENNOSCANDIAN SHIELD, RUSSIA): MESO-NEOARCHEAN OR LATE PALEOPROTEROZOIC?

Геодинамика и тектонофизика, 2021
The comments are given on the article authored by M.V. Mints and K.A. Dokukina – The Belomorian Eclogite Province (Eastern Fennoscandian Shield, Russia): Meso-Neoarchean or Late Paleoproterozoic?
S. G. Skublov, A. V. Berezin, L. I. Salimgaraeva   +2 more
doaj   +1 more source

Zircon U-Pb age, trace element and Hf isotope composition of Sepon Au-Cu deposit, Laos: tectonic and metallogenic implications

China Geology, 2018
: The Truong Son Fold Belt, located at the northeastern margin of the Indochina Block, is considered to be tectonically linked to the subduction of the Paleotethys Ocean and subsequent collision. Sepon is one of the most important super large deposits of
Xin-yu Wang, Dian-hua Cao, Zong-qi Wang, An-jian Wang, Yu-dong Wu   +4 more
doaj   +1 more source

Hf isotope compositions of northern Luzon arc lavas suggest involvement of pelagic sediments in their source [PDF]

Contributions to Mineralogy and Petrology, 2005
New Hf isotopic compositions for island arc basalts from the Luzon arc (Philippines) define a remarkable sub-horizontal trend in Hf–Nd isotopic space with a small range of ɛHf (+5 to +17) associated with a large variation in ɛNd (−7 to +8). The data plot above and barely overlap the terrestrial array defined by oceanic basalts and continental crust ...
Marini, Jean-Christophe, Chauvel, Catherine, Maury, René   +2 more
openaire   +2 more sources

Copper isotope evidence for large-scale sulphide fractionation during Earth’s differentiation [PDF]

, 2015
The differentiation of Earth into a metallic core and silicate mantle left its signature on the chemical and isotopic composition of the bulk silicate Earth (BSE).
Savage, P.S., Siebert, J., Badro, J., Moynier, F., Puchtel, I.S., Chen, H., Savage, Paul S., Shofner, G.   +7 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Geochemical studies of shales from the Asu River Group, Lower Benue Trough: Implications for provenance and paleo-environment reconstruction

Solid Earth Sciences, 2022
Combined use of trace elements, rare earth elements (REEs) with hydrogen (δH) and oxygen (δ18O) stable isotope composition to elucidate origin and paleo-environment-conditions and reconstruction is a contemporary trend in the field of geochemistry ...
Anthony Temidayo Bolarinwa, Olufemi Faloye, Sunday Ojochogwu Idakwo   +2 more
doaj   +1 more source

Coupled Hf-Nd-Pb isotope co-variations of HIMU oceanic island basalts from Mangaia, Cook-Austral islands, suggest an Archean source component in the mantle transition zone

, 2013
Although it is widely accepted that oceanic island basalts (OIB) sample geochemically distinct mantle reservoirs including recycled oceanic crust, the composition, age, and locus of these reservoirs remain uncertain. OIB with highly radiogenic Pb isotope
Arculus, Richard J., van Westrenen, W.; id_orcid, Wille, Martin, Eggins, Stephen M., Wille, M., Nebel-Jacobsen, Yona J., Nebel, Oliver, Eggins, S.M., Jenner, F.E., Arculus, R.J., van Westrenen, W., Woodhead, Jon D., Woodhead, J.D., Jenner, Frances E., Nebel, O., Nebel-Jacobsen, Y.J., van Westrenen, Wim   +16 more
core   +1 more source

Selective Inhibition of Integrin β3 Topology Provides a Safer Antithrombotic Strategy

Advanced Science, EarlyView.
Current integrin αIIbβ3 inhibitors effectively reduce thrombosis but also increase bleeding risk. During thrombosis, high shear blood flow can directly activate the integrin αIIbβ3 via a distinct topological change in the β3 transmembrane domain, independent of hemostatic platelet signaling.
Joonha Lee, Chul‐Gyun Lim, Pothiappan Vairaprakash, Jong‐Min Kim, Jiyoon Kim, Ji‐Young Park, Klaus M. Hahn, Hyunbo Shim, Hae Woong Choi, Tobias S. Ulmer, Soon Jun Hong, Chungho Kim   +11 more
wiley   +1 more source

Evaluation of n-alkanes and their carbon isotope enrichments (d13C) as diet composition markers

, 2011
Plant cuticular n-alkanes have been successfully used as markers to estimate diet composition and intake of grazing herbivores. However, additional markers may be required under grazing conditions in botanically diverse vegetation.
Derseh, M.B., W.F. Pellikaan, A. Tolera, Tolera, A., M. Bezabih, Pellikaan, W.F., Hendriks, W.H., W.H. Hendriks   +7 more
core   +1 more source