Results 111 to 120 of about 48,565 (249)

Zircon: The Metamorphic Mineral

open access: yesReviews in Mineralogy and Geochemistry, 2017
A mineral that forms under conditions as variable as diagenesis to deep subduction, melt crystallization to low temperature alteration, and that retains information on time, temperature, trace element and isotopic signatures is bound to be a useful petrogenetic tool. The variety of conditions under which zircon forms and reacts during metamorphism is a
openaire   +3 more sources

Thermo‐Tectonic History of Archean Basement Rocks in the Aktash Tagh, Southeastern Tarim Craton: Constraints From Zircon U‐Pb, Zircon and Apatite Fission‐Track Dating

open access: yesGeochemistry, Geophysics, Geosystems
Stable craton lithosphere can undergo complex tectonic events at its margins due to peripheral tectonic activity. In this study, we conducted a comprehensive analysis of zircon U‐Pb dating, apatite and zircon fission‐track thermochronology on the Aktash ...
Xiao Hu   +6 more
doaj   +1 more source

Micro-zircon: origin and evolution during metamorphism

open access: yes, 2008
The size and distribution of zircon within a garnet-mica-schist from the Scottish Highlands were assessed using scanning electron microscopy. The study reveals that abundant 0.2-3.0 μm sized zircon is preferentially concentrated within garnet and ...
Gordon, S.H.   +3 more
core   +1 more source

THE PROLONGED INFLUENCE OF ROOT DRESSING OF CAJANDER LARCH (LARIX CAJANDERY MAYR.) ANNUAL AND BIENNIAL SEEDLINGS WITH THE GROWTH STIMULANTS ZIRCON AND EPIN ON THEIR GROWTH AT FIFTEEN YEARS OF AGE

open access: yesSiberian Journal of Life Sciences and Agriculture
Cajander larch (Larix cajandery Mayr.) is the eastern race of Gmelin larch, the main forest-forming species in the Amur Region and the Primorsky Territory. It is widely used in the national economy. It is promising  for landscaping.
Valentina Yu. Ostroshenko   +1 more
doaj   +1 more source

Zircons from Eclogite-Associated Rocks of the Marun–Keu Complex, the Polar Urals: Trace Elements and U–Pb Dating

open access: yesGeosciences
The Marun–Keu complex plays a significant role in our understanding of the geological evolution of the Ural orogen; however, it remains poorly understood.
Laysan Salimgaraeva   +5 more
doaj   +1 more source

Zircon-monoclinic-scheelite transformation in nanocrystalline chromates

open access: yes, 2010
Our in-situ high-pressure X-ray diffraction measurements on zircon structured nanocrystalline chromates show that the structural phase transformation from zircon to scheelite phase proceeds via an intermediate monoclinic phase, i.e., zircon→monoclinic ...
Sharma, Surinder M.   +11 more
core   +1 more source

Exsolution of thortveitite, yttrialite, and xenotime during low-temperature recrystallization of zircon from New Caledonia, and their significance for trace element incorporation in zircon [PDF]

open access: yes, 2004
Recrystallized zircon grains in a phengite-epidote-chlorite schist from north-eastern New Caledonia contain as inclusions a mineral assemblage consisting of celadonite, kaolinite, quartz, Fe-oxy-hydroxide,smectite, chlorite, xenotime-(Y), thortveitite ...
Hermann, Joerg   +3 more
core  

Production and purification of zircon opacifier from zircon found in the coastal area of Bangladesh

open access: yes, 2008
In this study the potentiality of Bangladesh zircon as a raw material for opacifier was examined. Preparation of zircon flour was done by both wet and dry ball milling. Wet milling of zircon was found to be much efficient than dry milling.
Haseeb, A.S. Md. Abdul, Naher, Sumsun
core   +1 more source

Paleoproterozoic Reworking of Archean Crust and Extreme Back‐Arc Metamorphism in the Enigmatic Southern Trans‐Hudson Orogen

open access: yesGeophysical Research Letters
The crustal evolution of the southernmost ∼2000–1800 Ma Trans‐Hudson orogen (THO) is enigmatic due to burial by Phanerozoic sediments. We provide new insights through petrochronologic analysis of a paragneiss drill core sample.
Ian W. Hillenbrand   +6 more
doaj   +1 more source

Recuperación de sílice residual de columnas de cromatografía en la síntesis sol-gel de pigmentos

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2000
The use of a silica waste of support chromatography process as raw material in the synthesis of ceramic pigments based in zircon network (yellow of praseodymium, turkish blue of vanadium and pink koral of iron), is analized in this study.
Grañana, M. C.   +4 more
doaj  

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