Twinned zircon from SK030 volcanic ash layer in Uonuma Group, Niigata Prefecture: morphology, zonal structure and internal structure
نویسندگان
چکیده
منابع مشابه
Volcanic ash layer depth: Processes and mechanisms
The long duration of the 2010 Eyjajallajökull eruption provided a unique opportunity to measure a widely dispersed volcanic ash cloud. Layers of volcanic ash were observed by the European Aerosol Research Lidar Network with a mean depth of 1.2 km and standard deviation of 0.9 km. In this paper we evaluate the ability of the Met Office’s Numerical Atmospheric-dispersion Modelling Environment (NA...
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— Synthesized from hydrothermal conditions, Sr5Zr3F22 crystallizes in the orthorhombic symmetry with a = 7.655(1) Å, b = 10.313(1) Å and c = 10.255(1) Å, space group P21212, Z = 2. The structure is determined from 3999 independent reflections including the Friedel opposites and refined up to the residual R1 = 0.036. Inversion twinning is evidenced with a Flack parameter refined to x = 0.377(4)....
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ژورنال
عنوان ژورنال: Japanese Magazine of Mineralogical and Petrological Sciences
سال: 2013
ISSN: 1345-630X,1349-7979
DOI: 10.2465/gkk.121102