Results 11 to 20 of about 3,374 (191)

Remagnetization of Lower Cretaceous Limestones in the Western Tethyan Himalaya and Its Tectonic Implications for the India‐Asia Collision

open access: yesGeochemistry, Geophysics, Geosystems
The drift history of the Tethyan Himalaya provides key constraints on the India‐Asia collision, Himalayan‐Tibetan orogenesis, and associated global climate change.
Siqi Wang   +12 more
doaj   +2 more sources

Identifying Framboidal Pyrrhotite: A Proxy for Hydrothermal Alteration of Organic‐Rich Sediments

open access: yesGeophysical Research Letters
Framboidal pyrrhotite, in sharp contrast to framboidal pyrite, has been rarely reported, and its formation remains poorly understood. Here we report its clear identification in a shale‐gas well core and explore its potential as a proxy for diagenesis or ...
Y. Wang   +7 more
doaj   +2 more sources

Smart Solutions: A New Direct Current Electric Machine Design to Reduce Weight and Enhance Efficiency. [PDF]

open access: yesGlob Chall
This article introduces a smart solution for the design of a brush DC motor with a winding‐free rotor (DCFR). The proposed model simplifies manufacturing, reduces material costs, and enhances efficiency. Designed for variable speed and solar power applications, the DCFR achieves 91.8% efficiency and a 21% weight reduction compared to conventional ...
Ivliev D   +5 more
europepmc   +2 more sources

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+1 more source

Tectonic Forcing of the Extreme Aridification of the East Asian Interior at Around 900 ka–Insights From the Spatially Inconsistent Magnetization of Chinese Loess

open access: yesGeophysical Research Letters, 2023
The upper sandy loess unit L9 on the Chinese Loess Plateau (CLP) corresponds to marine isotope stages 22–24, and it represents aeolian deposition under conditions of extreme aridification. However, the forcing mechanism remains controversial.
Xinbo Gao   +7 more
doaj   +1 more source

On the reliability of drilling core reorientations using palaeomagnetic methods: A case study from the boreholes in the Tarim Basin

open access: yes地质科技通报, 2023
Objective This study explores the accuracy of drilling core reorientations by using remanent magnetization. Methods To this end, paleomagnetic analyses were carried out on 43 Silurian sandstone samples collected from five boreholes (TKQ101, SHUN9, TAT19,
Weiwei Chen   +4 more
doaj   +1 more source

Remagnetization of Permian Emeishan basalts: Constraints on the timing of native copper mineralization in northeast Yunnan Province, China

open access: yesFrontiers in Earth Science, 2021
New paleomagnetic results from the Permian Emeishan basalts in the Zhaotong area, NE Yunnan province, China show four natural remanent magnetization components.
Chengying Liu   +6 more
doaj   +1 more source

Impact of Upward Oxygen Diffusion From the Oceanic Crust on the Magnetostratigraphy and Iron Biomineralization of East Pacific Ridge-Flank Sediments

open access: yesFrontiers in Earth Science, 2021
Recent measurements of pore-water oxygen profiles in ridge flank sediments of the East Pacific Rise revealed an upward-directed diffusive oxygen flux from the hydrothermally active crust into the overlying sediment.
Adrian Felix Höfken   +7 more
doaj   +1 more source

Remagnetization of Carboniferous Limestone in the Zaduo Area, Eastern Qiangtang Terrane, and Its Tectonic Implications

open access: yesFrontiers in Earth Science, 2022
Robust paleomagnetic results through geological time are one of the keys to understand the drift history of the eastern Qiangtang terrane (EQT). Here, we presented comprehensive petrographic observations and rock magnetic and paleomagnetic analyses of ...
Liang Yu   +15 more
doaj   +1 more source

Paleomagnetism of the Upper Devonian rocks of the Andoma Hill [PDF]

open access: yesНефтегазовая геология: Теория и практика, 2023
Paleomagnetic research to identify the ancient components of remanent magnetization and to obtain magnetostratigraphic data is a difficult problem for some time intervals, including the Devonian.
Sal'naya N.V.
doaj  

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