Results 31 to 40 of about 666 (181)
Melting of subducted sediments reconciles geophysical images of subduction zones
Nature Communications, 2021 Here, the authors identify that magnetotelluric conductive anomalies commonly observed on the trenchward-side of volcanic arcs in subduction zones can be explained by subducted sediments.
M. W. Förster, K. Selway
doaj +1 more source
Decoding Metamorphic Nanodiamonds Formation Through Their Internal Structures
Journal of Metamorphic Geology, EarlyView.ABSTRACT Metamorphic diamonds offer insights into Earth's evolution, modulating the global carbon cycle through subduction into the mantle and exhumation. However, the formation and internal structure of minute diamonds remain poorly understood. Here, we study the internal structures of diamond‐bearing inclusions from the Eastern Alps using state‐of ...
Tim Sotelšek +8 more
wiley +1 more source
Fission track studies on hornblende, biotite and phlogopite from Sweden [PDF]
Bulletin of the Geological Society of Finland, 1972 Fission track studies and K-Ar dating on three silicate minerals from Sweden have given the following results: Fission track age K—Ar age RM 07249 hornblende, Malmberget, Fragment 1 1255 m.y. 1875 m.y. » 2 450 » RM 620569 biotite, Ingelsbo Fragment 1 305
E. Welin, I. Lundström, G. Åberg
doaj +1 more source
X‐ray computed tomography study of terrestrial analog cores in preparation for Mars sample return
Meteoritics &Planetary Science, EarlyView.Abstract Mars Sample Return (MSR) is expected to transform planetary science by providing unprecedented access to pristine Martian material. Initial characterization in the sample receiving facility (SRF) will rely on nondestructive techniques such as X‐ray computed tomography (XCT) to document the condition, distribution, and internal features of ...
Sophie Benaroya +3 more
wiley +1 more source
Известия высших учебных заведений: Геология и разведкаBackground. The mineral association of ruby in the Snezhnoye deposit is represented by 7 rock-forming and 19 accessory minerals. Here, all minerals vary in their composition due to isomorphism.
A. K. Litvinenko, Sh. A. Odinaev
doaj +1 more source
Drelów, the 13th and latest meteorite fall in Poland—A typical L6 chondrite with shock veins
Meteoritics &Planetary Science, EarlyView.Abstract On Tuesday, February 18, 2025, at 18:04:14 local time, residents of Poland observed a bright fireball registered by many Polish fireball stations belonging to the Skytinel Network established a few months before by Mateusz Żmija. Thus, the meteoroid's orbit, atmospheric trajectory, and the strewn field were calculated, and over 70 fragments ...
Addi Bischoff +18 more
wiley +1 more source
Experimental petrology constraints on kamafugitic magmas [PDF]
European Journal of MineralogyKamafugites are rare volcanic igneous rocks, characterized by the presence of kalsilite and variable amounts of leucite, nepheline, melilite, clinopyroxene, olivine and phlogopite, which may not necessarily be present all together. Kamafugites are silica-
F. Innocenzi +10 more
doaj +1 more source
ONTOGENESIS OF CORUNDUM DEPOSITS OF THE RAY-IZ MASSIF, THE POLAR URALS [PDF]
Минералогия, 2019 Ontogenetic studies of a collection of corundum-bearing plagioclasites and glimmtrites from Rubinovy Log occurrence in the Ray-Iz massif, Polar Urals, indicate a magmatic model of formation of mineralization. The main morphological of feature is eutectic
V.A. Popov +3 more
doaj +1 more source
Applied SciencesPhlogopite is a crucial indicator for effectively constraining the magmatic evolution and emplacement mechanism of kimberlite. In this study, samples were collected from the No. 110 kimberlite pipe within diamond belt I and the No.
Sishun Ma, Ende Wang, Haitao Fu
doaj +1 more source
علوم آب و خاک, 2020 The production of compost and vermicompost from manure and different organic residues and also, their enrichment with some fertilizers and other treatments have been extensively investigated.
F. Jafari +3 more
doaj