High pressure experimental investigation of clinopyroxene dissolution in a K-basaltic melt
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10441958" target="_blank" >RIV/00216208:11310/21:10441958 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=n9x3h60jMd" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=n9x3h60jMd</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemgeo.2021.120533" target="_blank" >10.1016/j.chemgeo.2021.120533</a>
Alternative languages
Result language
angličtina
Original language name
High pressure experimental investigation of clinopyroxene dissolution in a K-basaltic melt
Original language description
Dissolution of clinopymxene (cpx) in a K-basaltic melt from the Campi Flegrei Volcanic District (Italy) has been investigated through dissolution and dissolution-crystallization experiments at pressure of 0.8 GPa, superliquidus temperature of 1350 degrees C, and dwell times between 0.5 and 1 h. The obtained dissolution rates range from 7.9.10(-6) cm s(-1) to 6.1.10(-6) cm s(-1) as a function of dwell time. In the dissolution-crystallization experiment (1300 degrees C; 0.8 GPa; 2 h), the formation of overgrowth rims accompanied by new cpx crystals suggests that the injection of recharge magmas in basaltic reservoir may lead to inverse or oscillatory zonation. The interaction between cpx and K-basaltic melt at approx. 1570 degrees C was studied by in situ radiography using synchrotron radiation combined with the Paris-Edinburgh press. This resulted in cpx resorption to occur depending on the temperature conditions with respect to the liquidus temperature of the cpx {T(cpxL)}. The calculated cpx dissolution rates are approx. 5.10(-3) cm s(-1) at T <= T(cpxL), and approx. 3.10(-2) cm s(-1) at T >= T(cpxL). The role of crystal dissolution in the estimation of magma residence times has been also tested for a natural magmatic system by interpolating the dissolution rates {approx. 10(-5)-10(-6) cm s(-1)} with the textural data of cpx phenocrysts from the Agnano-Monte Spina pyroclastic deposit at Campi Flegrei caldera (Campanian region, Italy). Results from calculations indicate that the time required for partial or complete resorption of phenocrysts varies from approx. 0.5 to approx. 40 h, and that the effect of crystal dissolution may be relevant to estimate magma residence times whether significant dissolution occurs during magma mixing processes.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
<a href="/en/project/GA18-01982S" target="_blank" >GA18-01982S: Experimental determination of the effect of oxygen fugacity on mineral/melt partitioning for the Highly Siderophile Elements at mantle conditions</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Geology
ISSN
0009-2541
e-ISSN
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Volume of the periodical
584
Issue of the periodical within the volume
December
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
16
Pages from-to
120533
UT code for WoS article
000702310500033
EID of the result in the Scopus database
2-s2.0-85115390731