Results 71 to 80 of about 3,099 (194)
The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces
Archaeometry, EarlyView.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 +6 more
wiley +1 more source
Static recrystallization of shocked calcite in Ries impact breccias
Meteoritics &Planetary Science, EarlyView.Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann +8 more
wiley +1 more source
Frontiers in Microbiology, 2014 Although recent studies have revealed more widespread occurrences of magnetofossils in pre-Quaternary sediments than has been previously reported, their significance for paleomagetic and paleoenvironmental studies is not fully understood.
Juan Cruz Larrasoaña +8 more
doaj +1 more source
Mechanochemical Enhancement of Siderite‐To‐Magnetite Conversion in Faults
Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.Abstract Magnetic phases in fault rocks offer potential “geothermometers” for estimating frictional heating during fault slip. However, the thermochemical kinetics of magnetic minerals subjected to shear deformation in hydrothermal fluids‐conditions typical of natural faults ‐ remains poorly understood, hindering accurate temperature estimates.
Tingting Du +7 more
wiley +1 more source
Jurnal Fisika Flux, 2017 A decaying measurement of Anhysteretic Remanent Magnetization (ARM) has been undertaken to estimation the grain size of magnetic mineral which carries remanent on peridotite igneous rocks.
Rina Reida +2 more
doaj
Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.Abstract The Curie Point Depth (CPD) is a key thermal boundary in the deep lithosphere and is widely used to constrain its thermal structure. However, uncertainties in magnetization and the non‐uniqueness of inversion lead to considerable inter‐study differences.
Chuanjie Chen +3 more
wiley +1 more source
Probable Middle Holocene geomagnetic excursion at the Red Rock archaeological site, California [PDF]
Geofísica Internacional, 1999 Paleomagnetic data from three sedimentary sections at a locality in western California (U.S.A.) is reported. Natural remanent magnetization directions obtained from 61 oriented cores showed a magnetic component different from the present geomagnetic ...
Hugo G. Nami
doaj
Antarctic Record, 2003 Paleomagnetic and rockmagnetic studies were carried out in order to investigate the characteristics of natural remanent magnetization (NRM) of deep-sea sediments cored from offshore Wilkes Land, East Antarctica. The core is 540cm long. Alternating-field (
Haruka Matsuoka, Minoru Funaki
doaj +1 more source
Remanent Magnetization in Meteorites [PDF]
Nature, 1972 ALTHOUGH the existence of natural remanent magnetization in meteorites has been taken as evidence for a primaeval magnetic field in the original bodies—presumably of asteroidal dimensions—from which meteorites formed1, it seems surprising that an asteroidal core (∼ 100 km diameter as an upper limit) can sustain convective motions efficient enough to ...
openaire +1 more source
Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires
Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton +11 more
wiley +1 more source