Time scales of syneruptive volatile loss in silicic magmas quantified by Li isotopes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F21%3A00000001" target="_blank" >RIV/00025798:_____/21:00000001 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.geoscienceworld.org/gsa/geology/article/49/2/125/590928/Time-scales-of-syneruptive-volatile-loss-in" target="_blank" >https://pubs.geoscienceworld.org/gsa/geology/article/49/2/125/590928/Time-scales-of-syneruptive-volatile-loss-in</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1130/G47764.1" target="_blank" >10.1130/G47764.1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Time scales of syneruptive volatile loss in silicic magmas quantified by Li isotopes

Popis výsledku v původním jazyce

Most explosive, silicic volcanoes, spend thousands of years in repose between eruptive events. Timing this switch from repose to eruption is key to interpreting monitoring signals and improving the safety of people living close to active volcanoes. We addressed this question using a novel technique based on lithium isotopic (d7Li) and elemental concentration profiles within plagioclase crystals, constraining volatile degassing to occur on time scales of tens of minutes prior to eruption. During this ephemeral time, Li abundances drop by a factor of 4 to 10 from crystal cores to rims accompanied by an increase of d7Li of up to 10 permil, reflecting diffusion-driven equilibration between plagioclase cores and outgassed, Li-poor melt. Our time scales show the potential for rapid changes in the volatile inventory of magmas syn-eruptively.

Název v anglickém jazyce

Time scales of syneruptive volatile loss in silicic magmas quantified by Li isotopes

Popis výsledku anglicky

Most explosive, silicic volcanoes, spend thousands of years in repose between eruptive events. Timing this switch from repose to eruption is key to interpreting monitoring signals and improving the safety of people living close to active volcanoes. We addressed this question using a novel technique based on lithium isotopic (d7Li) and elemental concentration profiles within plagioclase crystals, constraining volatile degassing to occur on time scales of tens of minutes prior to eruption. During this ephemeral time, Li abundances drop by a factor of 4 to 10 from crystal cores to rims accompanied by an increase of d7Li of up to 10 permil, reflecting diffusion-driven equilibration between plagioclase cores and outgassed, Li-poor melt. Our time scales show the potential for rapid changes in the volatile inventory of magmas syn-eruptively.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Geology

ISSN

0091-7613

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

125-129

Kód UT WoS článku

000613644100003

EID výsledku v databázi Scopus

2-s2.0-85099247318