Results 41 to 50 of about 143 (136)

New Terrestrial Native Iron Discovered on Earth's Surface

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Native iron is a major common mineral in lunar samples and meteorites but rarely occurs on Earth's surface, as its stability requires highly reducing conditions with very low oxygen fugacity. To date, native iron has mainly been found in basalts, ophiolites, and deep hydrothermal systems.
Tingwei Zhang, Shuhui Cai, Zhipeng Zeng, Youqian Li, Shixia Yang, Chenglong Deng   +5 more
wiley   +1 more source

Magnetic properties of geraisites, the first tektite strewn field identified in Brazil

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1163-1178, July 2026.
Abstract Geraisites are a newly recognized class of tektite from Brazil. They occur as centimeter‐sized, elongated to subspherical bodies scattered across surface gravel and shallow subsurface layers within a ~90‐km‐long strewn field extending between the municipalities of São João do Paraíso and Curral de Dentro, near the border between the states of ...
Melissa De Andrade Nunes, Ricardo I. F. Trindade, João Pedro Rodriguez Pinto, Alvaro P. Crósta, Gabriel G. Silva, Ludovic Ferrière, Camila R. Sales, Giovanna M. Tosi   +7 more
wiley   +1 more source

Fluid‐Induced Magnetic Enhancement in Sandstone Friction Experiments: Implications for Coseismic Fault Temperature Estimates

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Constraining peak temperature during seismic slip is essential for quantifying earthquake energy budgets and fault weakening. Rock magnetic methods provide a sensitive means of estimating shear‐induced coseismic temperature rise; however, the role of fluids in friction‐induced magnetic alterations remains poorly constrained.
Qiang Fu, Mark J. Dekkers, Simo Spassov, Derya Gürer, Chien‐Cheng Hung, Job P. B. Arts, André R. Niemeijer   +6 more
wiley   +1 more source

The effect of structural changes on the functional properties of Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk metallic glass [PDF]

Serbian Journal of Electrical Engineering
The ferromagnetic Fe65.5Cr4Mo4Ga4P12C5B5.5 bulk metallic glass rods of 1.8 mm diameter were prepared prepared by the copper-mold casting technique. As-quenched and successive furnace annealed samples were examined by thermal analysis (DTA), X ...
Mitrović Nebojša, Čukić Bratislav, Nedeljković Borivoje, Kalezić-Glišović Aleksandra, Obradović Nina   +4 more
doaj   +1 more source

Correlation between isothermal expansion and functional properties change of the Fe81B13Si4C2 amorphous alloy [PDF]

Science of Sintering, 2009
The structural changes effect on functional properties of ribbon shaped samples of the Fe81B13Si4C2 amorphous alloy during annealing process was investigated in this paper.
Kalezić-Glišović A., Maričić V.A., Kosanović D.A., Đukić S., Simeunović R.   +4 more
doaj   +1 more source

Effect of alloying elements (Zr, Hf, Co), heat and mechanical treatment conditions on the phase composition and magnetic properties of SmFe11Ti compounds with ThMn12 structure

EPJ Web of Conferences, 2018
The results of thermomagnetic, metallographic and X-ray diffraction phase analysis as well as the measurements of specific magnetization (σs), Curie temperature (TC), coercive force (HC) of (Sm,M)(Fe,M)12-xTix alloys samples, where M = Zr, Hf, Co with ...
Urzhumtsev Andrey, Anikin Maksim, Tarasov Evgeniy, Semkin Mikhail, Cherepkov Maksim, Kudrevatykh Nikolay, Zinin Aleksandr, Moskalev Vladimir   +7 more
doaj   +1 more source

Rock Magnetic, Petrography, and Geochemistry Studies of Lava at the Ijen Volcanic Complex (IVC), Banyuwangi, East Java, Indonesia

Geosciences, 2018
Lava has complex geochemical characteristics based on differences in eruption centers, eruptive events, and flow emplacement. Characterization of lava is useful for understanding the geological conditions of a volcanic region.
Aditya Pratama, Satria Bijaksana, Mirzam Abdurrachman, Nono Agus Santoso   +3 more
doaj   +1 more source

Magnetic Fabric: A Geophysical Approach for Identifying China's Neolithic Rammed Earth

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Accurate identification of rammed‐earth remains is essential for understanding early social complexity in Neolithic China. However, scientific methods for identifying rammed‐earth materials in Chinese prehistoric archeology remain limited, and identification still rely largely on field observations.
Fen Wang, Hao Wu, Lishan Liao, Qingyi Zhao, Zehao He, Shutong Wei, Chao Zhu, Zongguo Zhang, Xinquan Dang, Yiqi Dai, Zhubin Li, Yuxuan Xie, Shuai Yao, Jingyi Shen, Qingyu Lu, Qiong Chen   +15 more
wiley   +1 more source

Temporal change in rock-magnetic properties of volcanic ashes ejected during a 1-year eruption event: a case study on the Aso Nakadake 2019–2020 eruption

Earth, Planets and Space, 2023
We investigated temporal changes in the rock-magnetic properties of volcanic ash ejected from the Aso Nakadake volcano during a sequence of ash eruptions from 2019 to 2020. For 39 volcanic ash samples, magnetic hysteresis parameters, including saturation
Chisato Anai, Takahiro Ohkura, Shin Yoshikawa, Nobutatsu Mochizuki   +3 more
doaj   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, Volume 68, Issue 3, Page 317-329, June 2026.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source