Results 21 to 30 of about 11,040 (172)
Chromites in ordinary-chondrite fusion crusts [PDF]
European Journal of MineralogyChromites from ordinary chondrites of groups H4, H5, LL5, LL6, L3.6 and L6 were studied and compared to an H5 ordinary chondrite processed to form a synthetic fusion crust.
M. Bellesi +8 more
doaj +1 more source
Microbial mediation of textures and minerals – terrestrial or parent body processes?
Open Astronomy, 2019 Evolution of chondritic parent body is influenced by thermal, impact metamorphism and aqueous alteration, studied in Mező-Madaras, Knyahinya, Mócs and Nyírábrány in aspect of high resolution in situ textural, mineralogical and organic geochemical ...
Polgári Márta +5 more
doaj +1 more source
Reclassification and thermal history of Trenzano chondrite
, 2007 We present a new single-crystal X-ray diffraction (XRD) study performed on a suite of six orthopyroxene grains from the low-shocked H6 Trenzano meteorite.
DOMENEGHETTI, M. C. +5 more
core +3 more sources
Chondrite-normalized REE patterns in different subgroups of soil.
, 2019 Chondrite-normalized REE patterns in different subgroups of soil.
Qingqing Zhang (458374) +4 more
core +1 more source
Trace element composition of troilite, iron and iron-nickel metall from meteorite Chelyabinsk
Литосфера, 2015 We studied the contents of trace elements in troilite, iron and in iron-nickel metal from meteorite Chelyabinsk by means of LA-ICP-MS. The features of the distribution of siderophile and chalcophile elements in sulfide and metallic phase in gray and ...
S. Yu. Stepanov, S. V. Berzin
doaj +2 more sources
Geological Journal, EarlyView.The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang +6 more
wiley +1 more source
Study of the Extraterrestrial Materials at Antarctica, III : On the Yamato Meteorites
Antarctic Record, 1973 Antarctica is thought to be the most suitable place for searching extraterrestrial materials. Since 1965, we have been studying microtektite and cosmic dust in Antarctica.
Masako SHIMA +2 more
doaj +1 more source
Petrology and mineralogy of the Viñales meteorite, the latest fall in Cuba
Science Progress, 2021 The new Cuban chondrite, Viñales, fell on February first, 2019 at Pinar del Rio, northwest of Cuba (22°37′10″N, 83°44′34″W). A total of about 50–100 kg of the meteorite were collected and the masses of individual samples are in a range 2–1100 g.
Feng Yin, Deqiu Dai
doaj +1 more source
Geological Journal, EarlyView.Early zircon saturation and crystallisation occur in mafic (52–54 wt.% SiO2) lavas at Tengchong volcanic field. These early formed zircons with high δ18O (6.6‰–7.9‰) indicates mantle enrichment by subducted supracrustal materials. ABSTRACT Late Pleistocene (< 0.2 Ma) mafic and evolved volcanic rocks occur in northern Tengchong Volcanic Field, SE ...
Lizhu Wang, Haibo Zou
wiley +1 more source
Transmission electron microscopy analysis of shock veins in the meteorite Jesenice
GeologijaMeteorite Jesenice is a weakly (S3) shocked ordinary chondrite from Slovenia. The shock event was violent enough to cause localized partial melting of the meteorite and the formation of shock veins.
Bojan Ambrožič +2 more
doaj +1 more source