Results 21 to 30 of about 501 (102)

Elongated Giant Seabed Polygons and Underlying Polygonal Faults as Indicators of the Creep Deformation of Pliocene to Recent Sediments in the Grenada Basin, Caribbean Sea

open access: yesGeochemistry, Geophysics, Geosystems, Volume 22, Issue 12, December 2021., 2021
Abstract Based on 2D seismic profiles, multibeam and seabed grab cores acquired during the Garanti cruise in 2017, 1–5 km wide seabed giant polygons were identified in the Grenada basin, covering a total area of ∼55,000 km2, which is the largest area of outcropping polygonal faults (PF) ever found on Earth so far.
A. Gay   +17 more
wiley   +1 more source

[Retracted] The Clinical Value of CT Scans for the Early Diagnosis and Treatment of Spinal Fractures and Paraplegia

open access: yesJournal of Healthcare Engineering, Volume 2021, Issue 1, 2021., 2021
The early diagnosis and treatment of spinal fractures and paraplegia by CT scan is investigated in depth and its clinical value is discussed in this paper. In this paper, a novel circulatory generation adversarial network, Spine‐GAN, is proposed for the diagnosis of various spinal diseases.
Peng Jia, Shan Zhu, Lin Guo, Zhihan Lv
wiley   +1 more source

Spectre infrarouge et rôle structurel du titane dans les Ti-garnets synthétiques [PDF]

open access: yes, 1979
peer reviewedTi-spessartite, Ti-andradite and its indium homolog, Ca3In2(Si, Ti)3O12, have been synthesized and investigated by infrared (ir) spectroscopy.
Tarte, Pierre, Garcia, A., Cahay, René
core   +2 more sources

«The Great» dyke of the Bug area

open access: yesГеофизический журнал, 2019
New data of geophysical, geochemical and petrologic studies of the well-known elongated 35km long linear geological structure of predictable fault-dyke nature in crystalline basement of the west part of the Bug mining area (Middle Bug area, the Ukrainian
V. A. Entin   +7 more
doaj   +1 more source

Enrichment of the Manganese Content by Wet High Intensity Magnetic Separation From Chikla Manganese Ore, India

open access: yesPhysical Separation in Science and Engineering, Volume 9, Issue 2, Page 69-82, 1998., 1997
Manganese ores from Chikla region, Bhandara district, Maharastra, India, by and large are low and medium grade types and need beneficiation to utilise them in ferromanganese industry. Isodynamic separation followed by chemical characterisation of ores from this region indicated their susceptibility to Mn enrichment.
G. V. Rao   +2 more
wiley   +1 more source

Spessartites in the Montagne Noire, France: mineralogical and geochemical data

open access: yesEuropean Journal of Mineralogy, 1993
Spessartites occur as sills in the Lower Cambrian formations on the northern slope of the Montagne Noire, France. They show an unusual mineralogy with phenocrysts of amphibole (magnesio-hastingsite to pargasite) and phlogopite, both including chromian rutiles (up to 3.5 wt.% Cr 2 O 3 ), zincian chromites and Ni-Co-Fe sulfarsenides with pyrrhotite.
Didier Béziat   +2 more
openaire   +1 more source

Early-Devonian intrusive magmatism of the Urals as indicator critical stage Paleozoic history mobile belt

open access: yesЛитосфера, 2015
It is established that during all-Uralian stage of mantle-type magmatism of Early Devonian age (410-393 Ma) the mantle Ordovician-Silurian magmatism was changed by mantle-crustal and crustal types.
G. B. Fershtater
doaj   +2 more sources

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar   +6 more
wiley   +1 more source

Characterisation of Jewellery with glass and garnet inlays from the Bohemian region and Great Migration Period

open access: yesArchaeometry, Volume 67, Issue 5, Page 1177-1194, October 2025.
Abstract The research focuses on jewellery finds uncovered in the region of today's Czech Republic dated to the Great Migration Period. The metals and garnet inlays detected were examined with μ‐EDXRF, whereas, for glass samples, LA‐ICP‐MS was used. The paper presented is supplemented with data concerning the technological processing of the jewellery ...
Zuzana Zlámalová Cílová   +5 more
wiley   +1 more source

Alteration's Control on Frictional Behavior and the Depth of the Ductile Shear Zone in Geothermal Reservoirs in Volcanic Arcs

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 2, February 2025.
Abstract The majority of geothermal energy is produced in tectonically active volcanic‐arc regions due to their high geothermal gradients. Reservoirs in these settings are often stratified with smectite/kaolinite‐, illite‐, and chlorite‐rich zones, in order of increasing depth and temperature. Eighteen andesitic core and surface samples were taken from
Barnaby Fryer   +7 more
wiley   +1 more source

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