naa a22 4500 510736491 CHVBK 20180411083012.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1134/S1075701513080047 doi (NATIONALLICENCE)springer-10.1134/S1075701513080047 Gulbin Yu St. Petersburg State Mining University, 21-aya liniya 2, St. Petersburg, 199106, St. Petersburg, Russia aut Compositional zoning in garnet and kinetics of metamorphic crystallization [Elektronische Daten] [Yu. Gulbin] The kinetics of zoned garnet porphyroblast growth is exemplified in a sample of garnet-staurolite-biotite schist from the northern Ladoga region. The diffusion-controlled porphyroblast growth was accompanied by a decrease in the kinetic coefficient during phase reactions. Even at insignificant (1-2°C) thermal overstepping, the leading role of diffusion as a factor that controls kinetics of porphyroblast growth in medium-grade metapelites is consistent with the parameters of metamorphic crystallization: T = 500-650°C, t = 1 Ma; D A1 app = 10−14 cm2/s, L = 0.2-0.6 cm, r = 1-3 mm, ΔC Al = 1.5 × 10−4-1.5 × 10−3 mol/cm3. Pleiades Publishing, Ltd., 2013 Geology of Ore Deposits Springer US; http://www.springer-ny.com 55/8(2013-12-01), 613-624 1075-7015 55:8<613 2013 55 11477 https://doi.org/10.1134/S1075701513080047 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1075701513080047 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Gulbin Yu St. Petersburg State Mining University, 21-aya liniya 2, St. Petersburg, 199106, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Geology of Ore Deposits Springer US; http://www.springer-ny.com 55/8(2013-12-01), 613-624 1075-7015 55:8<613 2013 55 11477 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer