Results 61 to 70 of about 30,445 (262)
Uralitization – An example from Kuusamo, Finland [PDF]
Bulletin of the Geological Society of Finland, 1977 The course of events as well as the chemical changes associated with the alteration of clinopyroxenes to uralite have been studied from diabases in Kuusamo, Finland.
R. Piispanen, T. Alapieti
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Coesite Discovery in Eclogites Confirms UHP Metamorphism in the Orlica‐Śnieżnik Dome (SW Poland)
Journal of Metamorphic Geology, EarlyView.ABSTRACT Eclogite lenses are exposed within the orthogneiss‐dominated core of the Orlica‐Śnieżnik Dome in the Sudetes, which forms the northeastern margin of the Bohemian Massif (Variscan Belt of Central Europe). The presence of coesite inclusions in garnet and omphacite confirms that these eclogites underwent ultrahigh‐pressure metamorphism.
Małgorzata Nowak +4 more
wiley +1 more source
Genetic types and provenance indication of clastic amphibole in the South Yellow Sea
Frontiers in Marine ScienceThe main focus of studying sediment sources in marine areas is to determine the properties of clastic minerals originating from different rivers. Variations in the characteristics of clastic minerals occur due to differences in the types of source rocks ...
Mengyao Wang +5 more
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Magnetic Anisotropy in Single Crystals: A Review
Geosciences, 2018 Empirical relationships between magnetic fabrics and deformation have long served as a fast and efficient way to interpret rock textures. Understanding the single crystal magnetic properties of all minerals that contribute to the magnetic anisotropy of a
Andrea R. Biedermann
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Литосфера, 2020 Research subject. This paper presents original findings about textural-structural, mineralogical, petrological, and geochemical features of the garnet-amphibole miaskites (firstes) of the Ilmenogorsky miaskite massif.Materials and methods. The microprobe
A. B. Nemov
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Sedimentology, EarlyView.ABSTRACT Understanding the biotic and abiotic influences on the deposition and diagenesis of recent microbial carbonates is crucial for addressing the environmental and ecological significance of ancient organosedimentary structures. This study investigates these factors and their expression in the microstructure of Holocene tufa thrombolites from a ...
Paulo Quezada +10 more
wiley +1 more source
Evidence for Miocene subduction beneath the Alboran Sea (Western Mediterranean) from 40Ar/39Ar age dating and the geochemistry of volcanic rocks from holes 977A and 978A [PDF]
, 1999 Volcanic pebbles in gravels from Sites 977 and 978 in the Alboran Sea (western Mediterranean) were dated (using the 40Ar/ 39Ar single-crystal laser technique) and analyzed for their major- and trace-element compositions (determined by X-ray ...
Duggen, Svend +4 more
core
The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)
Sedimentology, EarlyView.ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti +5 more
wiley +1 more source
Journal of Petrology, 2018 The crystal-melt partitioning behaviour of a suite of trace and economically important elements— Li, Sc, V, Mn, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Nb, Mo, Sn, Ba, Hf, W and Pb—has been investigated experimentally under fluid-saturated conditions for ...
Alexander A. Iveson +3 more
semanticscholar +1 more source
TYPOMORPHIC FEATURES OF MINERALS OF TI ORES FROM THE PIZHEMSKOE DEPOSIT [PDF]
Минералогия, 2016 The technology of production of concentrates of Ti minerals from ores of the Pizhemskoe deposit is improved and includes crushing, mechanical removal of slime films, desliming, gravitation concentration, classification, and magnetic separation.
A.B. Makeev
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