Results 191 to 200 of about 51,712 (271)

Topotactic Phase Transition in Epitaxial La0.7Sr0.3MnO3‐δ Films Induced by Oxygen Getter Assisted Thermal Annealing

Small, Volume 22, Issue 7, 2 February 2026.
The perovskite to brownmillerite topotactic phase transition in La0.7Sr0.3MnO3‐δ thin films is achieved through a simple and efficient thermal vacuum annealing that employs bulk aluminum as an active oxygen getter. STEM reveals surface segregation and cation redistribution, while EELS identifies distinct manganese oxidation states across different ...
Chenyang Yin, Lei Cao, Xue Bai, Suqin He, Hengbo Zhang, Tomáš Duchoň, Felix Gunkel, Yunxia Zhou, Mao Wang, Anton Kaus, Janghyun Jo, Rafal E. Dunin‐Borkowski, Shengqiang Zhou, Thomas Brückel, Oleg Petracic   +14 more
wiley   +1 more source

Indian summer monsoon variability from 184 to 25 ka inferred from sedimentary magnetic properties in Heqing Basin, Southwest China. [PDF]

Sci Rep
Yang Z, Xu X, Li S, Qiang X.
europepmc   +1 more source

Multi‐Method Geochronology and P‒T Modeling Unravels the Thermo‐Tectonic History of the Rudall Province, Western Australia

Tectonics, Volume 45, Issue 2, February 2026.
Abstract The Rudall Province (RP) is a Paleo‐Mesoproterozoic belt that records numerous overprinting tectono‐metamorphic events. Situated on the eastern edge of the West Australian Craton (WAC), the RP represents a key area for understanding the Proterozoic assembly and subsequent tectonic history of Western Australia.
Alejandra Bedoya, Martin Hand, Xiao‐Fang He, Jade Anderson, David E. Kelsey, Christopher L. Kirkland, Stijn Glorie   +6 more
wiley   +1 more source

Rare Earth Element Distribution and Paleoenvironmental Implications of Harmanlı (Gölbaşı, Adıyaman) Coals, SE Anatolia. [PDF]

ACS Omega
Ünal-Kartal N, Altunsoy M, Karagöz M.
europepmc   +1 more source

Rb-Sr whole rock dating of acid rocks.

GEOCHEMICAL JOURNAL, 1979
N. H. Gale, R. D. Beckinsale, A. J. Wadge   +2 more
openaire   +2 more sources

Silicate and Carbonate Weathering Perturbation at the Eocene‐Oligocene Transition Recorded by Mg Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract During the Eocene‐Oligocene Transition (ca. 34 Ma), the Earth underwent a dramatic decline in atmospheric CO2, global cooling, a deepening of the carbonate compensation depth (CCD), and the formation of a permanent ice sheet on Antarctica. The expansion of Antarctic glaciers eroded the underlying bedrock and increased the weathering flux to ...
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
wiley   +1 more source

Toxicological Assessment of Trace Element Exposure in Relation to Sudden Unexplained Death (SUD): Environmental Geochemistry and Dietary Risk in Central-Eastern Yunnan, China. [PDF]

Toxics
Han Y, Hao L, Zhang S, Luo K.
europepmc   +1 more source

Slab‐Mantle Interaction During Subduction Initiation: Constraints From Trace Element and Sr‐Nd‐Pb Isotope Systematics of Boninite and Other Magmas and Metamorphic Sole in the Oman Ophiolite

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The Late Cretaceous Oman ophiolite includes a series of volcanic rocks generated during the transition from spreading ridge to protoarc associated with subduction initiation. We analyzed major and trace elements and Sr, Nd, and Pb isotope compositions of lavas and dikes of the protoarc stage, especially boninites. We also analyzed amphibolites
Tsuyoshi Ishikawa, Kazuya Nagaishi, Kyoko Kanayama, Keitaro Kitamura, Shigeyuki Wakaki, Yuki Kusano, Susumu Umino   +6 more
wiley   +1 more source

Impact of Essential and Toxic Trace Elements on Cervical Premalignant Lesions. [PDF]

Biomedicines
Kocić J, Zečević N, Jagodić J, Mihajlović D, Dzuverović M, Pavlović N, Kotur-Stevuljević J, Manojlović D, Stojsavljević A.   +8 more
europepmc   +1 more source

Impact Reactivation of a Hydrothermal System in Basalt in the Vargeão Dome Impact Structure, Brazil

Journal of Geophysical Research: Planets, Volume 131, Issue 2, February 2026.
Abstract As hydrous minerals have been observed in impact craters on Mars, impact‐generated hydrothermal systems (IGHSs) have been considered as potential habitats for life on that planet. The Vargeão Dome, a 12 km wide impact structure in southern Brazil, was formed in basalts with at least two hydrothermal alteration stages.
Jitse Alsemgeest, Fraukje M. Brouwer, Luis F. Auqué, Kirsten van Zuilen, Natalia Hauser, Wolf Uwe Reimold   +5 more
wiley   +1 more source