Results 111 to 120 of about 16,247 (260)
Oxygen isotopes in titanite and apatite, and their potential for crustal evolution research
Geochimica et Cosmochimica Acta, 2019 Oxygen isotope analysis of zircon, often combined with geochronology and Hf isotope analysis, has been pivotal in understanding the evolution of continental crust.
E. Bruand +4 more
semanticscholar +1 more source
Gemological and Chemical Characterization of Gem-Quality Titanite from Morocco
CrystalsTitanite is a widespread accessory mineral in igneous, metamorphic, and hydrothermal rocks, but few comply with gem-grade requirements. Previous studies on Moroccan titanite focused on elementary composition and U-Pb dating.
Yu Yuan +5 more
doaj +1 more source
U-Pb isotopic results for single shocked and polycrystalline zircons record 550-65.5-Ma ages for a K-T target site and 2700-1850-Ma ages for the Sudbury impact event [PDF]
The refractory mineral zircon develops distinct morphological features during shock metamorphism and retains these features under conditions that would anneal them in other minerals.
Bohor, B. F., Kamo, S. L., Krogh, T. E.
core +1 more source
Geochemistry of the Rio Espinharas hybrid complex, northeastern Brazil [PDF]
, 1962 The Rio Espinharas pluton, northeastern Brazil, belongs to the shoshonitic series and consists mainly of syenogranite, quartz-monzonite and porphyritic quartz-monzonite, but diorite, quartz-monzodiorite, quartz-syenite and microsyenogranite also occur ...
Campos, T. F. C. +2 more
core +1 more source
Synthesis of Cr-doped CaTiSiO5 pigments by spray drying [PDF]
, 2009 Cr-doped CaTiSiO5 were synthesized by spray drying of an aqueous solution of precursor salts plus further calcining the resulting powders. The samples were prepared by conventional ceramic method as well for comparison study as ceramic pigments.
Carda, Juan +5 more
core +1 more source
, 2017 Isotopic U–Pb titanite and monazite data from the southern Sao Francisco craton better constrain the timing of the tectono-thermal event that led to the amalgamation of the craton and the crust that forms the basement of its fringing orogenic belts in ...
C. Aguilar +3 more
semanticscholar +1 more source
Записки Горного институтаMineralogical-geochemical (SIMS method) study of titanite and geochronological (ID-TIMS method) study of garnets from mineral mines of the Southern Urals has been carried out. The mineral associations containing titanite belong to four contrasting types:
Vladislav S. Stativko +4 more
doaj
Igneous Layering, Fractional Crystallization and Growth of Granitic Plutons: the Dolbel Batholith in SW Niger [PDF]
, 2017 This study reassesses the development of compositional layering during the growth of granitic plutons, with emphasis on fractional crystallization and its interaction with both injection and inflation-related deformation.
Barbey, P. +3 more
core
Continuous Cauchy wavelet transform of XAFS spectra. [PDF]
, 2005 The continuous Cauchy wavelet transform (CCWT) is applied to the analysis of XAFS spectra. Thanks to that method, XANES and EXAFS signals can be visualized in threedimension: the wavevector (k), the interatomic distance uncorrected for phase-shifts (R ...
Argoul, Pierre +2 more
core +4 more sources
CrystalsTitanites can be excellent markers of element transfer in medium-temperature retrograde metamorphism. Euhedral titanites from several alpine fissures from Mont Blanc, particularly those of Périades and Courtes, crystallised at the end of the main quartz ...
Michel Cathelineau, Chantal Peiffert
doaj +1 more source