Results 21 to 30 of about 4,092 (217)
Journal of Asian Earth Sciences: X, 2021 Gabbro–granite complexes formed in active continental margins provide critical constraints on magmatic processes, crust–mantle interactions, and tectonic evolution.
Xiaofei Zhang +8 more
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Not all feldspars are equal: a survey of ice nucleating properties across the feldspar group of minerals [PDF]
Atmospheric Chemistry and Physics, 2016 Mineral dust particles from wind-blown soils are known to act as effective ice nucleating particles in the atmosphere and are thought to play an important role in the glaciation of mixed phase clouds.
A. D. Harrison +9 more
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Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]
, 2008 The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Smith, C.L. +13 more
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Cathodoluminescence Characterization of Maskelynite and Alkali Feldspar in Shergottite (Dhofar 019) [PDF]
, 2009 Dhofar 019 is classified as an olivine-bearing basaltic shergottite and consists of subhedral grains of pyroxene, olivine, feldspar mostly converted to maskelynite and minor alkali feldspar. The CL spectrum of its maskelynite exhibits an emission band at
Gucsik, Arnold +11 more
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Boletín Geológico, 2021 The Neoproterozoic igneous rocks found in the municipality of San José del Guaviare include several isolated plutonic bodies that protrude from the Phanerozoic sedimentary cover in belts aligned NW-SE.
Carolina Amaya López +8 more
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The incrementally zoned Miocene Ayagaures ignimbrite (Gran Canaria, Canary Islands) [PDF]
, 2010 The 20–25 m thick trachyphonolitic Ayagaures ignimbrite cooling unit [(AY); 11.8 Ma] exposed over 250 km2 (onshore volume ca. 4.5 km3 DRE) is the uppermost and most voluminous cooling unit of the Middle Fataga Formation (MFF), part of the Fataga Group ...
Hans-Ulrich Schmincke +5 more
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Yankuang ceshi, 2018 BACKGROUND The Mo-Be deposit in Xiapu Dawan, Fujian Province is located in a volcanic rock area. Mineralization may be closely related to magmatic activity and fracture structure.
HUANG Xin-peng
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Rapakivi texture in porphyritic dikes within the Karavanke granitic massif (Slovenia) [PDF]
Bulletin of the Geological Society of Finland, 2002 The northern Karavanke Granitic Massif straddles the Slovenian–Austrian border. The investigated area lies in northern Slovenia, and extends from the western Slovenian–Austrian border to the east for about 30 km, with a maximum width of 2 km.
M. Dobnikar, T. Dolenec, G. Bellieni
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Hydrogen in Nominally Anhydrous Crustal Minerals [PDF]
, 2003 Systematic infrared and nuclear magnetic resonance investigations of common crustal minerals were undertaken to better understand the geologic significance of minor components of structural hydrous species within these nominally anhydrous minerals ...
Johnson, Elizabeth Ann
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The Shahewan rapakivi-textured granite-quartz monzonite pluton, Qinling orogen, central China: Mineral composition and petrogenetic significance [PDF]
Bulletin of the Geological Society of Finland, 2002 The Mesozoic Shahewan pluton consists of four texturally different types of biotite-hornblende quartz monzonite. In the porphyritic types alkali feldspar occurs as euhedral or ovoidal megacrysts that are often mantled by one or more plagioclase shells ...
X. Wang, T. Wang, I. Haapala, X. Lu
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