
Open access
Date
2020-08Type
- Journal Article
Citations
Cited 9 times in
Web of Science
Cited 10 times in
Scopus
ETH Bibliography
yes
Altmetrics
Abstract
Zircon dating is commonly used to quantify timescales of magmatic processes, but our ap-preciation of the consequences of internal magma body dynamics lags behind ever-increasing analytical capabilities. In particular, it has been shown that crystal accumulation and melting of cumulates by recharge-delivered heat may affect melt chemistry within magma bodies. We considered the effect of such processes on zircon solubility in highly evolved silicate melts of diverse chemical affinities. Our modeling shows that in most cases cumulate melting perpetu-ates the zircon saturation behavior of the first melts emplaced at shallow storage levels. Once cumulate melting is established, the ease of saturating in zircon is controlled by cumulate mineralogy, with a particular effect of the amount of cumulate zircon and its availability for resorption. The fidelity of zircon as a recorder of magma system history thus depends on both the system's chemical affinity and mineralogy, and the history itself. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000431108Publication status
publishedExternal links
Journal / series
GeologyVolume
Pages / Article No.
Publisher
Geological Society of AmericaOrganisational unit
03958 - Bachmann, Olivier / Bachmann, Olivier
Funding
166281 - Understanding eruptive and post-eruptive processes in rhyolites via lithium (Li) isotopes (SNF)
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Show all metadata
Citations
Cited 9 times in
Web of Science
Cited 10 times in
Scopus
ETH Bibliography
yes
Altmetrics