Heterogeneous nucleation as the predominant mode of crystallization in natural magmas: numerical model and implications for crystal-melt interaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10314954" target="_blank" >RIV/00216208:11310/15:10314954 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00410-014-1103-6" target="_blank" >http://dx.doi.org/10.1007/s00410-014-1103-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00410-014-1103-6" target="_blank" >10.1007/s00410-014-1103-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heterogeneous nucleation as the predominant mode of crystallization in natural magmas: numerical model and implications for crystal-melt interaction

Popis výsledku v původním jazyce

Crystallization of natural magmas is inherently a disequilibrium process, which involves nucleation and growth kinetics, melt-crystal mechanical interactions and subsolidus modifications, which are all recorded in the resulting rock texture. We use a newhigh-resolution three-dimensional numerical model to address the significance and consequences of homogeneous versus heterogeneous crystal nucleation in silicate magmas. With increasing amount of heterogeneous nuclei during crystallization, initially equigranular textures evolve to porphyritic, bimodal and spherulitic types. The corresponding crystal size distributions (CSDs) become concave-up curved, the clustering index progressively decreases, and the grain contact relationships record increased clustering. Concave-up curved CSDs previously interpreted as resulting from multistage crystallization, mixing of crystal populations, grain agglomeration, or size-dependent growth are now predicted, consistently with other size, spatial and

Název v anglickém jazyce

Heterogeneous nucleation as the predominant mode of crystallization in natural magmas: numerical model and implications for crystal-melt interaction

Popis výsledku anglicky

Crystallization of natural magmas is inherently a disequilibrium process, which involves nucleation and growth kinetics, melt-crystal mechanical interactions and subsolidus modifications, which are all recorded in the resulting rock texture. We use a newhigh-resolution three-dimensional numerical model to address the significance and consequences of homogeneous versus heterogeneous crystal nucleation in silicate magmas. With increasing amount of heterogeneous nuclei during crystallization, initially equigranular textures evolve to porphyritic, bimodal and spherulitic types. The corresponding crystal size distributions (CSDs) become concave-up curved, the clustering index progressively decreases, and the grain contact relationships record increased clustering. Concave-up curved CSDs previously interpreted as resulting from multistage crystallization, mixing of crystal populations, grain agglomeration, or size-dependent growth are now predicted, consistently with other size, spatial and

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP210%2F12%2F0986" target="_blank" >GAP210/12/0986: Termodynamika a kinetika látkového přenosu, krystalizace a vývoje textur v magmatických a hydrotermálních systémech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Contributions of Mineralogy and Petrology

ISSN

0010-7999

e-ISSN

—

Svazek periodika

169

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

16

Strana od-do

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Kód UT WoS článku

000348280100004

EID výsledku v databázi Scopus

2-s2.0-84920771255